Arduino Jobs

I am looking for an experienced PLC programmer to do on a small CODESYS 3.5 automation project. The task involves creating a simple sequential control process using sensors, motor control, a loading gate, and a 10-second timer.

A dedicated PCB will drive a self-service car-wash “vendo” unit built around an Arduino Nano. The board must accept the pulse output from a standard electronic coin slot, translate each valid coin into the required runtime, and use that signal to energise five independent relays that handle pumps, valves, or lights. All relays share a common 12 V source, yet the Nano and logic lines stay safely at 5 V, so on-board regulation (12 V → 5 V buck or linear, as you judge appropriate) is part of the layout. The relays themselves need fly-back protection, status LEDs, screw-terminal or JST headers for easy field wiring, and clear silkscreen labelling. A USB-B or tag-connect footprint for in-circuit programming is also required. Deliverables • Complete schematic (KiCad...

I need single-sided, double-sided, and full multi-layer PCB layouts created for mixed-signal work. The boards combine analog and digital circuitry and will be used across embedded control, RF, and other high-speed applications, so careful impedance control, differential-pair routing, and solid mixed-signal grounding are essential. Altium Designer is my main environment, yet I can seamlessly integrate files produced in Proteus, KiCAD, Eagle CAD, EasyEDA, or even Multisim, so feel free to use whichever of those platforms fits your workflow best. What I expect from you: • Complete schematic capture and net-validation • Fully routed PCB layout that passes DRC and is ready for fabrication • Gerber (or ODB++) files, drill data, and a clean BOM suitable for procurement ...

I need a purpose-built Electronic Speed Controller for my electric glider that runs on 3-6 cell Li-Po packs (8.4 V – 11.1 V). The unit must deliver: • Responsive throttle control for a brushless motor • Integrated battery management with safe low-voltage cut-off and, if practical, basic current limiting • A reliable brake function to stop a folding prop cleanly in flight Compact size, light weight and maximum efficiency are important, as the airframe has limited space and every gram counts. Here is what I would like from you: 1. Schematic, PCB layout and BOM (KiCad, Altium or similar) 2. Firmware source code with clear parameter tables (C / STM32, ATMEL AVR or comparable MCU) 3. Simple desktop configuration tool or clear CLI instructions so I can adjust ti...

This project is an automated health tracking application developed using Python to monitor body temperature and detect anomalies in real-time. By bridging the gap between software and hardware prototyping, the system continuously reads live data streams from sensors via serial communication. The core Python backend processes this data, checks it against standard medical temperature thresholds, and instantly visualizes the live logs on a clean, custom graphical user interface (GUI) dashboard, making health tracking highly accessible and efficient. Key Highlights of the Project: Real-Time Processing: Uses Python's serial communication (pyserial) to fetch continuous live temperature data from hardware sensors. Instant Fever Alerts: Implements precise threshold logic to immediately fla...

I already have a partially-working prototype for an industrial counter + timer built around an Arduino. It needs to count production units while tracking elapsed time in parallel, show both values on an LCD screen, and push the data over Wi-Fi to my factory LAN. Where I’m at • Core hardware is assembled and a rough sketch is running, but the logic occasionally drifts and the Wi-Fi payloads are not stable. • The prototype can be shipped to you immediately, fully labelled and with a wiring diagram of the current build. What I need from you 1. Clean, well-commented Arduino code that reliably performs the simultaneous counting and timing functions. 2. Solid LCD interface: clear, easy-to-read formatting of count, timer, and simple status icons. 3. Robust Wi-Fi routin...

I’m building a handheld device that lets me roll a ball across any flat surface and have it actively steer itself so the pen mounted inside draws in the exact direction I choose. An optical-flow sensor will read surface motion, my code will translate that into heading commands, and two small motors inside the ball will supply the corrective spin. The overall sketch is already under way, but I need a specialist who knows Arduino-style hardware and, more importantly, how to marry miniature motors with an ESP32-C module for precise directional control of the ball. Your main focus will be advising on the right motor format, driver circuitry, power budgeting, and the physical/electrical integration so the firmware can call simple functions like setHeading() or setVelocity(). I’m ...

I want to turn a concept for a pneumatic actuator into a working prototype that can grip or clamp objects with repeatable, controllable force. The job spans mechanical design, pneumatic circuit sizing, and the embedded-software layer that will let me test different grip profiles through a simple interface. Scope • Translate my sketches and performance targets into detailed CAD ready for rapid manufacture (CNC, SLA or FDM are all fine). • Select off-the-shelf valves, fittings and sensors, then size the cylinder and air supply so the gripper reaches its force and stroke goals. • Develop quick-change firmware or a ROS/Arduino node that lets me adjust pressure, speed and dwell time from a laptop while logging position/force data. • Assemble and bench-test the unit,...

I need a wrist-worn prototype that continuously samples ambient radiation and instantly warns the wearer whenever levels reach a hazardous threshold. The core goal is real-time safety, so reliability and fast response are critical. Here is what I expect at hand-off: • A fully assembled, battery-powered watch-style unit that can be worn and tested in the field • Firmware and source files that drive the sensor, handle threshold logic, and trigger the alert (sound, vibration, or LED—whichever best fits the space and power envelope) • Complete schematic, PCB layout, and bill of materials so the design can be reproduced • Brief usage guide explaining calibration, normal operation, and how to adjust alarm levels I’m open to your preferred development tools...

This is a hardware development project. I require a fully functional working prototype, not a simulation, research paper, or theoretical design. The final deliverable must demonstrate ultrasonic TOF measurement on small non-ferrous metal components through a working prototype and demonstration video. I need help taking a lab-bench concept for measuring ultrasonic wave velocity and turning it into a rugged, handheld instrument that works reliably on Platinum, Silver, Nickel, and brass samples. The core tasks include designing the full analog front-end (pulser/receiver, low-noise pre-amp, gain control, anti-alias filters), selecting and driving the piezo transducers, and implementing a precise time-of-flight algorithm in an embedded platform. I am open to ARM, DSP, or FPGA solutions as ...

I have a 16-channel relay board that must be driven by an Arduino. Each of the sixteen micro-switch inputs will correspond to one—and only one—relay output. When a switch is pressed the matching relay should energise for a fixed pulse of 2-3 seconds, then drop out automatically; there is no need for the user to alter that timing. Here is what I need from you: • Clean, well-commented Arduino sketch that reads the 16 discrete inputs, debounces the switches, and fires the appropriate relay for the required duration. • Pin-mapping and a simple wiring diagram so I can connect everything without guesswork (I will be using a common 16-relay module that accepts active-LOW signals, but please keep the code flexible enough to invert logic if needed). • Guidance on a...

I need an experienced embedded hardware / PCB engineer to design a production-ready STM32-based main controller PCB for a therapeutic massage/spine bed system. This is a build-to-spec project. I already have a detailed engineering handoff package including system architecture, old PCB references, estimated current budget, pin maps, connector notes, BOM guidance, firmware handoff notes, layout requirements, and test plans. The freelancer’s main responsibility is hardware design and manufacturing outputs: schematic, PCB layout, Gerbers, BOM, assembly files, and firmware-ready hardware documentation. Firmware will be developed separately using AI/Codex/Claude from existing working ESP32 firmware. I will burn the firmware once the board is ready. The PCB must support first firmware flash...

Raspberry Pi 5 CCTV RTSP Viewer with GPIO Alarm Trigger We require a developer to create a reliable Raspberry Pi application that automatically displays a live CCTV camera stream and responds to GPIO input triggers. Hardware Raspberry Pi 5 – 8GB Raspberry Pi DAC Pro HDMI-connected display CCTV camera providing an RTSP stream External dry-contact or relay inputs External device controlled by a GPIO output Normal Operation When the Raspberry Pi is powered on, the system must automatically: Boot the Raspberry Pi operating system. Launch the programmed application. Open the supplied CCTV RTSP stream. Display the RTSP stream in full-screen mode. Continue displaying the stream until a GPIO alarm input is activated. The CCTV camera IP address, username, password and RTSP stream setting...

I need a working human-computer interface that can both pick up and broadcast data over Bluetooth at the highest speed the protocol allows. The data flowing through it will be full-rate cellular communications data rather than simple audio or text, so throughput and low latency are critical. On the input side the unit will read Qi energy and Acu-meridian energy via harness-style skin contacts. Those raw sensor signals have to be conditioned, digitised and pushed straight to a tablet over Bluetooth without noticeable lag. In the opposite direction the tablet will be able to transmit control or stimulation patterns back to the interface just as quickly. The job covers hardware design, embedded firmware and a basic demo app for a tablet or computer: • Hardware: schematic, PCB layout an...

I have already prepared the full CoppeliaSim scene (.ttt) with the mobile platform, vision sensor and the coloured paths laid out. What I still need is the Python side: a clean, well-commented script that connects through the CoppeliaSim remote API, reads the vision stream, identifies the target colours and drives the robot along each line using a PID controller. Primary task The robot’s job is straightforward line following. Because the scene contains several coloured tracks, it must be able to hop from one to another whenever the target colour changes, staying centred on whichever line it is tracking. Colours to detect • red • green

I aim to develop a solution that will facilitate data communication between an Arduino UNO and a SIM7600E using AT+COMMAND. The primary data in focus will be temperature sensor readings. Key Responsibilities: - Setting up a reliable connection between Arduino UNO and SIM7600E - Implement AT+COMMAND for effective communication - Design a protocol for transmitting temperature sensor data Ideal Skills: - Solid knowledge of Arduino - Proficiency in handling SIM7600E - Experience in implementing AT+COMMAND - Understanding of sensor data transmissions. Please ensure you can efficiently deliver on these requirements, and provide the mentioned sensor data communication before placing your bid.