Elektronika Jobs

I need a skilled expert to upgrade my boat's battery system to a higher capacity. Currently, my boat uses a lead-acid battery, and I’m looking to enhance its performance by upgrading both the battery and the inverter. Key Requirements: - Upgrade from lead-acid to a higher capacity battery (batteries will be provided). - Expertise in marine battery systems and inverter upgrades. - Knowledge of safety and installation procedures. Ideal Skills and Experience: - Experience with marine batteries, preferably lithium-ion. - Electrical engineering background is a plus. - Proven track record of similar battery and inverter upgrade projects. Please provide your previous work examples and a detailed plan for the upgrade.

I want to automate the filling of an overhead storage tank with a compact microcontroller-based solution. The unit should sense the water level in the tank, trigger the pump when the level drops below a defined threshold, and shut the pump off once the tank is full. I am using a standard overhead tank fed by a single pump from ground level. You’re free to recommend the most reliable sensing method—, or conductive—so long as it performs accurately in typical domestic water conditions and can be serviced easily if something fails. The design must include: • A microcontroller (Arduino, ESP32, or comparable) with clearly commented firmware. • A driver stage capable of switching a 1 HP single-phase pump safely. • Manual override for both pump ON and OFF. ...

I have the core idea for a new board and now need the full circuit design translated into a clean, fabrication-ready PCB layout schematic. The project is strictly circuit-design focused: from refining the schematic to producing professional-grade PCB artwork that any standard board house can manufacture. You will start with my rough concept and component list, confirm critical specs (voltage rails, signal integrity, mechanical keep-outs), then create: • A complete, editable schematic (Altium Designer, KiCad, or Eagle—whichever you prefer and own a license for) • Layer-stack definition and board outline that respects my size constraints • Optimised component placement and routing, observing best-practice DRC and EMI/EMC guidelines • Gerber, drill, and pick...

I'm looking for an electrical engineer to design and build a custom solar rechargeable 12V, 24-inch 5-8 watt LED light light will be used outdoors and needs to provide medium brightness for general use. It should be able to stay on for at least 10 hours a night. It needs to be light and compact. Requirements: - Solar panel should be monocrystalline - Light should be weather-resistant and durable for outdoor use - no need for mounting hardware and installation instructions Ideal skills and experience: - Expertise in electrical engineering, especially with solar power systems - Experience designing outdoor LED lighting - Knowledge of weatherproofing and durable materials

I'm looking for a skilled developer to build a lighting MIDI fader console with USB integration. The console will primarily be used on Windows. Key Requirements: - User Interface: Physical knobs and faders - USB Integration: Must support Windows - Features: - Programmable buttons - Mappable controls Ideal Skills and Experience: - Experience with MIDI hardware and software - Proficiency in USB integration for Windows - Knowledge of physical interface design with knobs and faders - Ability to implement programmable and mappable controls **EXPERIENCE WITH ARTNET A PLUS FOR FUTURE PROJECTS** Please provide samples of previous work related to MIDI or hardware integration. We are an American Manufacturing Company looking to replace our lead designer. Must have Cad and Programmi...

My collection of personal vapour devices has gradually stopped performing. I need an electronics-savvy troubleshooter who understands vape mods, pens, and similar hardware to fix these. I have about seventeen of these. They're first generation, three-part, meaning the atomizer is separate from the battery section. I've replaced the batteries, and the circuit boards. The batteries are working, as the LED is lighting when "drawn" on, but they're producing no vapour. I want to save these because I can't find them anymore, and it's the only kind I can use. I hope someone can help.

I need an existing motion sensor prototype miniaturized to a 2.5x1.5x0.8 inch package. Requirements: - Reduce size of circuit board, casing, and power supply as needed - Maintain functionality and performance Ideal Skills: - Experience with electronics miniaturization - Proficiency in working with motion sensor circuits - Strong background in PCB design and integration

Description I need one physical prototype assembled from a complete, tested design. This is a hands-on build — soldering, basic fabric mounting, and loading provided code — with no design work. Everything you need is written down: a parts list (~$80), a wiring diagram, a belt layout drawing, the two microcontroller programs, and a three-step verification procedure. What you'll build A wearable elastic belt carrying six small 3V coin vibration motors, each glued into a small rigid pod and Velcro-mounted so it can be repositioned. The motors are driven by a BBC micro:bit v2 through a ULN2003 driver chip, powered by a 3×AA pack, housed in a small pouch or box on the belt. A second micro:bit v2 serves as a handheld controller and talks to the belt over the micro:bit&#...

I’m building a small embedded prototype that can recognise a road accident the instant it happens, trigger a buzzer on-board and then text the vehicle’s GPS coordinates to a presaved emergency contact. An accelerometer will be the sole crash-detection sensor, so the firmware has to watch for abnormal spikes on that device, classify them reliably as a collision rather than rough driving, and fire the alert routine. Here is the workflow I have in mind: the microcontroller samples the accelerometer, confirms the threshold breach, sounds the buzzer for nearby help, fetches latitude and longitude from an attached GPS module and immediately sends an SMS through a GSM or LTE-M modem. If the cellular network is down, the code should queue and retry until a signal is regained. What I ...

I am integrating a 50-pin FPC connector taken from a mobile phone into a brand-new product, but I have absolutely no documentation on it. Your task is to uncover every signal on that ribbon—power rails, data lines, control pins, grounds—so I can design a compatible mating board without risking damage to either side. Here is what I can supply once we start: • Clear macro photos of both sides of the flex and its mating board • A working handset for continuity checks or live probing if needed • physical pcb can be couriour within india What I need back from you: • A complete pin-by-pin table listing signal names, functions, and voltage levels where applicable • A brief description of the testing or reverse-engineering method you used (tracing, conti...

I need a reliable, Taiwan-based agent who can locate and secure every class of electronic component I use—semiconductors, passive parts, and electromechanical devices—and then follow the parts all the way through to verified, bench-tested quality. My projects move quickly, so I want you to: • Identify multiple local suppliers, request quotes, and negotiate realistic lead times. • Arrange sample shipments, organise full batch purchases, and manage export logistics. • Oversee comprehensive testing and quality control in accredited labs, delivering clear reports that show the parts meet spec before they leave Taiwan. Experience with OEM/ODM supply chains, knowledge of local distributors in Hsinchu and Taoyuan, and comfort working in both Mandarin and Eng...

We are looking for an experienced freelance Embedded Hardware + PCB + Firmware Engineer for an IoT/industrial electronics project. Location: Kolkata preferred Required hands-on experience: • STM32 Nucleo / Discovery boards • Embedded C/C++ and STM32 firmware • UART / USART / RS485 / Modbus RTU • USB-to-RS485 & UART-to-RS485 • GSM / 4G / LTE modules and AT commands • PCB schematic & layout – KiCad / Altium / Eagle / EasyEDA • Component selection & BOM preparation • Power supply and protection circuits • Logic analyzer / oscilloscope / multimeter • PCB bring-up, debugging and hardware testing • Sensor and industrial interface integration • ADC / 4–20mA / 0–2V interfaces Good to have: ESP32, MQTT, Lo...

Electrical discrimination study completed using trimble software or similar proving discrimination between all circuit breakers I can provide cable lengths etc uk standard I can also provide base trimble pro design model

PADS PCB Design for high speed 16 layer board. Repy only if you have the PADS software and experince of high speed circuits

I want to kick-off a line of small automotive sound devices by starting with a straightforward 12 V buzzer that gives a single, clear alert tone. Your job is to take the idea from concept all the way to a testable prototype that can survive the usual temperature, vibration and voltage transients found under the hood. What I need right now • Electrical design (schematic, BOM and PCB layout) • Component choices that are readily available and automotive-grade • Basic acoustic tuning so the tone is sharp and easily heard inside and outside the vehicle • Short validation notes showing it meets the normal 9-16 V operating range and can cope with load-dump / reverse-polarity conditions Show me examples of past work on comparable low-cost automotive or motorcycle elec...

I need a compact laser-based perimeter protection system for a commercial site that immediately calls a predefined phone number whenever the beam is interrupted. The solution must combine reliable laser detection hardware with a GSM module (SIM800, SIM900 or similar) and the embedded code to place that outbound call within seconds of a breach. The finished unit should be self-contained, run from standard low-voltage DC, and include clear wiring diagrams and firmware source so I can duplicate or service it later. If you can integrate basic tamper detection, weather-proof housings, or an optional battery backup, mention that in your proposal—those extras would be a plus but are not mandatory. To accept the work I will power up the prototype on-site, break the beam and confirm that my...

We are looking for an experienced PCB designer to help with PCB schematic design, PCB layout, component selection, routing, and preparation of manufacturing-ready files.

I am looking for an experienced electronics/IoT developer to build a **working prototype of a 4G SIM-based security camera and a simple mobile app**. The camera should work without Wi-Fi and connect to the internet using a SIM/4G network. ### Prototype Requirements * Camera with live video * 4G/SIM connectivity * Microphone + speaker for two-way communication * Battery powered * USB-C/external power or power bank support * Remote viewing from a mobile app * Basic camera controls * Simple backend/cloud connection * Prototype should support the concept of having multiple cameras at one location For the first stage, I am **not looking for a production-ready/custom-manufactured camera**. Commercially available development boards/modules can be used. The goal is to build **one complete wor...

I already have a fully-verified KiCad schematic for a small industrial power supply and now need the actual board laid out. The goal is to squeeze the design into the smallest practical footprint without compromising functionality, so every millimetre saved counts. All parts must sit on the top layer only; the underside has to stay completely flat for mechanical clearance and easy heat sinking against a metal chassis. Because of that mechanical requirement, I want to stick with standard through-hole vias rather than blind, buried, or micro solutions. Here’s what I would like you to handle: • Precise component placement that respects the single-sided assembly constraint. • Clean, compact routing that keeps the overall dimensions as tight as possible while meeting manufac...

I need a complete set of KiCad schematics drawn from scratch for a fairly large, multi-board concept. The job is limited to the schematic stage—no PCB layout—yet the design is dense, with a high component count, multiple power rails, and several digital-analog interfaces that must be kept well organised through hierarchical sheets. I will supply a first batch of parts: CPUs, power converters, key connectors and a few specialised ICs, each with its electrical characteristics and a preferred footprint. The remaining devices—discrete passives, protection components, odds-and-ends ICs—still need library symbols created or matched to existing KiCad libraries, along with suitable footprints. Whenever information is missing, I will point you to the relevant datasheets; yo...

I’m building a compact entertainment gadget dedicated to high-quality audio playback and I need a complete PCB designed from scratch. The board must meet all the usual consumer-electronics constraints—low noise, minimal power draw, reliable mass-production tolerances—and fit inside a small enclosure that I will share once we start. Here’s what I expect from you: • Schematic capture based on my block diagram and component preferences • Optimised multilayer board layout with proper ground-plane management for clean audio paths • Gerber, drill and pick-and-place files ready for fabrication • A clearly organised BOM with current, purchasable parts and viable alternates • Brief design notes explaining critical decisions (impedance contro...

I’m putting together a straightforward location-tracking system for loads of non-perishable goods that move through warehouses, trucks, and rail cars. The core requirement is real-time position updates from departure to storage, with automatic alerts if a device signals potential theft. The hardware can be either single-use—so the receiver never has to return or recharge the tag—or a reusable unit that we can redeploy after each trip. I’ll need your help scoping both variants and producing an estimated cost per device for each. What I expect from you • A concise technical proposal outlining the recommended tracker form factor, network technology (e.g., GSM, LTE-M, NB-IoT, LoRaWAN), and back-end platform or API you plan to leverage. • A table or brie...

hello, as part of our development process, we are experimenting with pcb design by Ai in kicad (mainly kimi k3 and konnect mcp). We can test ideas quickly but then design are less than optimal (to say the least) So, we would like to hire a person that is willing to review and fix the project to make it really fabrication ready. We would like to hire by the hour as we cannot know upfront what the effort is going to be for any given pcb, sometimes the project is not bad, sometimes it's terrible. So, if you are not familiar with freelancer. Com desktop app to track the hours, Pleaee do not bid. This is an ongoing project as we have several projects like this. Pleaee mention your experience and portfolio should back it up.

I am looking for an experienced PCB Design / Hardware Engineer to complete the PCB Layout and Routing from scratch for a custom, high-density drone flight controller board (AMADEO H743). I already have the complete schematic capture and verified footprints / component libraries ready. The goal of this project is to take the schematic and design a clean, reliable, multi-layer PCB layout ready for fabrication and assembly. Board Specifications & Layout Challenges: Main Controller: STM32H743VIT6. Power Management: Wide-range power delivery from 3S–8S LiPo batteries (~11V to 34V input). Incorporates high-efficiency switching buck regulators (5V/10V rails) and low-noise LDOs (3.3V) for sensors. Sensors & Peripherals: Low-noise IMU (ICM-42688-P), BMP390 barometer, A...

Custom Motherboard with Microchip 48‑pin MCU – 2x 3‑Digit & 1x 7‑Digit Seven‑Segment Displays, Oxygen Sensor, 3x 12V Solenoid Valves, Flowmeter, 2x 5‑Key Touch Keypad, 2x I2C LCDs,2x Water Level Sensor, Thermal Printer, 12V Relay for Motor, air pressure sensor Project Overview I need a custom motherboard (schematic, PCB layout, and firmware) based on a Microchip 48‑pin SMD MCU (TQFP‑48). The board must interface with: . 1x air pressure sensor · 2x 3‑digit seven‑segment displays for Qty · 1x 7‑digit seven‑segment display for amt · Oxygen sensor · 3x 12V solenoid valves – controlled via on‑board MOSFETs · 1x flowmeter – pulse output, interrupt input · 2x 5‑key touch keypad · 2x I2C LCD displays (16×2) · 2x...

I am moving a hardware project from concept to production and need a KiCad specialist to work alongside me through schematic capture, PCB layout design, and library management. The current schematic is still in its initial draft, but I have already documented every functional block, net constraint, and mechanical boundary in a detailed requirements PDF that I will share as soon as we start. Your first task will be to review and clean up the draft schematic, verifying component choices and flagging any electrical or footprint conflicts. From there we will: • Finalise the component libraries, adding any missing symbols or footprints so the project remains self-contained and version-controlled. • Complete the PCB layout to match my stack-up, keep-out zones, and routing guideline...

I need a complete, new-build landscape lighting system for the pathway that runs along the front and side of my home, with additional accent, wall and step lights to tie everything together. Nothing is in place right now—there’s no transformer, no wiring, no fixtures—so you will be starting from a blank slate. What I’m after The goal is an elegant, low-voltage LED setup that highlights the walkway while throwing subtle washes of light on adjoining planters and masonry steps. All cabling must be hidden beneath pavers or neatly trenched, and the final installation should comply with local electrical codes. Scope of work • Design a practical fixture layout and confirm it with me before installation. • Supply or specify suitable LED pathway, wall-wash and ...

I have a hand-drawn circuit diagram that now needs the full KiCad treatment: a clean, conventional schematic, properly assigned footprints, a 3D board render, and final Gerber files ready for fabrication. The project is for my own personal use, so I’m happy to discuss component selection rather than lock you into any specific brands. Your background with KiCad should be evident in your reply—show me similar conversions or other boards you have taken from paper (or napkin!) through to production. Deliverables • KiCad schematic matching my sketch • Neatly laid-out PCB with footprints and design rules observed • 3D board view exported as STEP or screenshots • Verified Gerber set (RS-274X) and drill files I’ll supply the scanned sketch and...

I have an STM32F407VET board that will drive a completely stand-alone single-axis solar tracker. The controller must perform three key jobs: • Automatic sun tracking – use only a gyroscope/accelerometer (no light or temperature sensors) to predict the sun vector and move two actuators so the panel stays aligned all day. • Manual control override – via push buttons or simple UART commands I can pause the algorithm and jog each axis, then resume tracking instantly. • Data logging and monitoring – record attitude, motor commands, and health metrics to a micro-SD card while simultaneously streaming the same data over UART for live viewing. I expect clean, non-blocking C firmware that compiles in STM32CubeIDE for the F407VET. HAL drivers are fine; FreeRTOS...

I'm seeking an experienced IoT developer who can create a hardware device with a digital display. The device should operate offline, providing straight output based on programmed inputs. Key Requirements: - Hardware: - Digital display output - Programmed to do calculation. - App: - Display input data and calculations from the hardware - User-friendly interface Ideal Skills: - Experience in IoT hardware development - Proficiency in app development - Strong programming skills - Ability to create offline operating systems Please provide examples of previous work and a brief outline of your approach.

HARITRON – B2B Business Development / Lead Generation HARITRON is an engineering services company specializing in Embedded Systems, Firmware Development, Electronics Engineering, PCB/Hardware Development, IoT and Product Development. We are looking for an experienced B2B Business Development professional — NOT a digital marketer — who can identify potential clients, reach decision-makers and generate genuine business opportunities. Target industries: • Embedded & electronics companies • IoT & hardware startups • Industrial automation • Medical devices • EV & automotive • Robotics • Semiconductor/electronics • Industrial product companies Target decision-makers: Founder, CTO, VP Engineering, Head of R&D, Engineeri...

I have a complete controller-level Bill of Materials that includes microcontrollers, capacitors, position sensors, IPMs, N-channel MOSFETs and IGBTs. The immediate goal is to drive the overall cost down without sacrificing reliability or long-term availability. Most of the boards now work with a mix of TI, Infineon, yageo, ATMEL, Microchip and STMicroelectronics devices, but I’m open to shifting to any pin-compatible or firmware-friendly alternative if it meaningfully trims the price. The same mindset applies to passive and power parts: if you can source a spec-matched capacitor, MOSFET or IGBT that lowers the piece price and is easy to get from the usual sources - China/Taiwan and their local distributors in India, i am open to it. Would prefer a Chinese/Taiwanese national who ca...

I’m putting together a small-run prototype board focused on digital signal processing that also needs onboard wireless connectivity. The goal right now is to capture a clean, production-ready schematic that I can pass straight into layout once the parts are locked in. Here’s what you’ll be working with: • 100 % digital component set—no analog front ends this time. • Core functions revolve around real-time signal manipulation plus low-power wireless links (think BLE, Wi-Fi or similar; I’m open to whichever stack fits best). • It’s strictly a development board, so easy probing, test headers and clear silkscreen labels are important. What I need from you: 1. Complete schematic in KiCad, Altium, Eagle or another well-known CAD tool. 2....

Un workspace de crates Rust sin lógica de negocio — entrega eventos ("tecla pulsada en el puerto 2", "tarjeta leída", "orden BLE recibida") y operaciones ("abre el relé 1", "responde por BLE") — que un binario de aplicación enlazará después: Esqueleto de ejecución: binario estático, tokio, fichero de configuración único, logs a journald, integración con systemd (sd_notify, watchdog), usuario sin privilegios. Capa de abstracción de placa con perfiles declarativos para Radxa ROCK Pi S0 (Rockchip RK3308, Armbian) y Raspberry Pi Zero 2 W (Raspbian), y guía para incorporar placas futuras. Identidad estable del equipo. Driver UART de nuestra pl...

I need a concise Arduino Uno sketch that drives my Nema 34 stepper through its existing driver in a continuous loop with the following timing: • From home, turn 60° clockwise and hold that position for one second. • Return to the home position and pause one second. • Turn 60° anticlockwise, pause one second, then repeat the entire sequence indefinitely. Please base the calculations on a typical 200-step Nema 34 (1.8° per step) unless I can later change a constant for different micro-stepping settings. No sensors or limit switches are required; it is pure open-loop control. Alongside the .ino file, include a clear wiring diagram that shows the connections between the Arduino Uno, my stepper driver, power supply, and any needed resistors or opto-isolators so...

i need a .vex file produced for a transmitter we sell to iBwave software users

My circuit is already captured as a clear schematic diagram; it contains just four to five surface-mount parts that form a simple signal-processing stage. All I need now is a production-ready, single-sided PCB layout turned around quickly. Key points you should know: • Single copper layer only – no vias to the reverse side. • Components are 100 % SMD; please place them so hand-soldering remains possible. • Board function is signal processing, so keep any sensitive nets short and well-routed. Deliverables I expect: • Complete Gerber / drill set ready for fabrication • Source layout file in your chosen tool (KiCad, Altium, Easy-EDA, etc.) • Simple placement PDF so I can check part orientation If you can start right away and hand back a cle...

This project involves updates to signal processing, and possible EMI compliance updates on an existing board. The PCB has already passed Part 15 emissions, but there is reason to think it may not pass CE. The successful candidate will possess, at minimum, a BSEE and extensive experience with Altium. The specifics are adding a dual analog switch to low noise signals for a musical instrument. Some existing components may need to be moved. We are specifying US based freelancers only.

Project Title: 3D Enclosure Design for ESP32 Desktop Companion (FDM 3D Printing) Hello, I need a custom, clean, and rigid 3D printable desktop enclosure for an ESP32 retro display gadget. The design must be optimized for FDM printing (2-part design: Front Main Body + Screw-on Back Cover). I have all the specific component links so you can use exact CAD dimensions: Components & Exact Links: 1. Display: 2.4" TFT LCD ST7789 (320x240) SPI module Link: 2. Microcontroller: ESP32 DevKit V1 (30-pin, USB-C version) 3. Mainboard: Double-sided prototype perfboard, exactly 70 mm x 50 mm 4. SD Card Reader: Standard Arduino SPI SD card shield module Link: 5. Rotary Encoder: EC11 Rotary Encoder with push-button (Shaft L=15mm, threaded bushing M7) Link: 6. LED Matrix: 2x2 WS2812B R...

Looking for someone that is an expert with ATS. Need some changes done both mechanical and electrical. Need to show past work on this field

I already built the user interface in SquareLine Studio for an Elecrow 7" CrowPanel (ESP32-S3). The layout consists of four full-screen background images with four transparent touch buttons placed on top. Pressing a button should simply toggle a corresponding light by driving one of the three external relays wired to the CrowPanel’s GPIOs; touching it again turns the same light back off. What I still need is the firmware that ties everything together: • Import the SquareLine-generated LVGL project, read the touch events, and link each of the four on-screen buttons to its relay output. • Drive the relays through ESP32 GPIOs with proper debouncing and visual feedback on the button (e.g. highlighted state while the light is ON). • Provide a clean PlatformIO o...

I need a custom mixed-signal circuit engineered from the ground up to drive an optical wireless communication link. The design must cleanly blend an accurate analog front-end—handling photodiode receive and LED/VCSEL drive stages—with the required digital processing blocks for modulation, clock recovery, and protocol framing. My priority is signal integrity across the entire chain: low-noise transimpedance amplification, precise ADC/DAC selection, and robust high-speed PCB layout that minimises jitter and EMI. Component choices should be commercially available and cost-effective for a small production run. Because the target is an optical wireless channel rather than Bluetooth, Wi-Fi, or Zigbee, you are free to choose or recommend the most suitable modulation scheme (e.g., ...

I need help repairing an optical cable input on my Denon stereo. The cable does not stay connected, and I'm unsure if there's any physical damage. Ideal Skills and Experience: - Experience with audio equipment repair - Familiarity with Denon products - Ability to diagnose and fix connection issues

An electrical schematic now exists only as a digital image and must be recreated as a clean, fully editable drawing. The task is strictly a redraw—no changes to the circuit itself—so every symbol, wire number, reference designator, and note has to match the original image exactly. Use any mainstream electrical-CAD platform you are comfortable with (AutoCAD Electrical, EPLAN, OrCAD, etc.); just be sure the drawing complies with standard drafting conventions and layer discipline so it can be maintained later. Deliverables • Native CAD file of the finished schematic • A print-ready PDF generated from that file Before hand-off I will spot-check key nets, component labels, and title-block data against the source image to confirm accuracy and completeness.

I’m preparing to launch a brand-new electronics manufacturing facility in South-East Asia or China and need an experienced factory engineer to guide me through the earliest setup decisions. My main focus is the assembly line: I want to achieve the lowest possible production cost without sacrificing reliability or future scalability. I’m looking for clear, practical direction on: • Optimal line layout and workstation sequencing for cost-efficient throughput • Equipment selection (including recommended vendors in the region) that balances upfront investment with long-term operating expense • Proven techniques for minimising labour, energy and material waste from day one • Local regulatory or infrastructure considerations that can quietly inflate co...

I need a dependable freelance technician I can call whenever a printer stops behaving in my clients’ stores around Dubai. The bulk of the work is mechanical repairs—think carriage alignment, stubborn paper-feed rollers, worn gears or a tired print head—on Epson LQ/LX dot-matrix units and a variety of thermal receipt printers used at the point of sale. All work happens on-site. Once I log a ticket, you meet the customer, diagnose the fault, carry out the fix, and leave the machine printing a clean self-test. If a part must be taken away for deeper work, you handle pickup and return, but most issues should be closed during the visit. What makes you perfect for this job • Proven, hands-on experience with dot-matrix and thermal receipt printers. • Comfortable ar...

My Epson dot-matrix unit has suddenly stopped behaving as it should and I need a technician who knows this older technology inside out. I’m not yet sure whether the fault is mechanical, electronic, or driver-related, so the first step will be a thorough diagnosis. Once you have isolated the problem, I’ll count on you to source or specify any parts, reinstall or update firmware or drivers if required, calibrate the print head, and confirm the printer is producing clean, evenly spaced output again. You should already be comfortable with Epson control codes, ribbon and platen adjustments, and the quirks of dot-matrix connectivity to modern PCs. If you can guide me through remote tests, great; otherwise tell me what you need for an on-site visit. Deliverables: • A concise di...

R7FS5D37A3A01CFP See my side hardware ready Actually my project . Collect data from plc and push into cloud server The plc have rs232 port some plc ds485 port Protocol may be modbus or some plc own . We give all format and structure Total 10 type of plc See . The collected data from plc push i into 4 sec interval to 3 location Ip address At the same time 1. TCP Ip format 2 location 104 format Maximum tags 100 from plc From that 100 tags 15 tags only we push 104 format See the main key point on ur code the ec200 module always connect with network more details will be shared with potential freelancer

R7FS5D37A3A01CFP See my side hardware ready Actually my project . Collect data from plc and push into cloud server The plc have rs232 port some plc ds485 port Protocol may be modbus or some plc own . We give all format and structure Total 10 type of plc See . The collected data from plc push i into 4 sec interval to 3 location Ip address At the same time 1. TCP Ip format 2 location 104 format Maximum tags 100 from plc From that 100 tags 15 tags only we push 104 format See the main key point on ur code the ec200 module always connect with network more details will be shared with potential freelancer

I need a compact controller board built around the STM32F103CBT6 in the 48-pin LQFP package (or a pin-compatible alternative with the same Cortex-M3 core). The board must expose three independent serial channels: • RS-485 • RS-232 • A UART linked to an on-board serial-to-TCP module that speaks plain TCP/IP Reliability is critical. Please integrate proven over-voltage, short-circuit and over-current protection on all power inputs as well as the three interface blocks. If you are more comfortable substituting a different F1-series part with identical footprints, that’s fine as long as the firmware and pinout remain drop-in compatible. Deliverables • Complete schematic (Altium, KiCad or EasyEDA) • Four/two -layer PCB layout with proper isolation be...