Microcontroller projects — HireLancer archive

ID / Date Listing

Secure Bitcoin hardware wallet prototype. Need embedded hardware engineer for feasibility review and PCB design: dual RA8M1 MCUs, TA101, SE052F, IDQ6MC1 QRNG, DS28E38, USB-C, microSD, display, LiPo power, buttons, tamper.

Hello, Phase Zero PCB Feasibility Review for Secure Hardware Wallet Before starting the full PCB design, I would like to do a Phase Zero feasibility review to c...

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Desain PCB Double Layer

Saya sedang mengerjakan perangkat berbasis elektronika dan membutuhkan bantuan untuk merancang PCB dua layer lengkap dengan skematiknya. Fokus utamanya adalah m...

HL-40506981

Skematik ESP32 Sistem Monitoring

Saya membutuhkan skematik rangkaian lengkap berbasis ESP32 untuk proyek sistem monitoring yang sedang saya kembangkan. Fokusnya hanya pada pembuatan skematik—be...

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Desain PCB Mikrokontroler via KiCad

Saya membutuhkan seorang ahli KiCad untuk membantu saya merancang dari nol sebuah skema elektronik sekaligus layout PCB berbasis mikrokontroler. Skema awal belu...

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Fix Arduino IDE Compilation Errors with Squareline Studio exports

I need assistance getting Squareline Studio to work with Arduino IDE on a Waveshare 7-inch board. My libraries are messed up, and I'm encountering compilation e...

HL-40503561

VESC Dual Motor Go-Kart Setup

I have a go-kart project that uses two separate BLDC motors and I need them both running flawlessly through a VESC-based controller and a handheld remote. Your...

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Precision Weighing Subsystem

I have already completed the Altium schematic and 2-layer PCB layout for a ratiometric weighing module that relies on an ADS1220 24-bit ADC (PGA = 128×, SPI + D...

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PX4 Developer for Servo Dropper Integration

Title: Need PX4 Developer to Add Servo Dropper & Identify Drone Ports Description: Hi, I have a drone running on custom PX4 firmware, and I need help adding new...

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PX4/ArduPilot Drone Firmware Customization Expert

I'm in need of a seasoned professional with extensive experience in drone development, particularly in firmware customization using PX4 and ArduPilot. The focus...

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Laser-FPGA Optoelectronic Integration

For a Spanish speaker in Barcelona! I am bringing together a compact laser platform and an FPGA-based control board here in Barcelona, and I need an engineer wh...

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ESP32-S3 IoT Mini Controller Assembly, Firmware Flashing & 24V Bench Testing – 5 Pilot Units

We are looking for an experienced electronics / embedded hardware freelancer to help assemble and test 5 pilot units of an ESP32-S3 based IoT mini controller. T...

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Drone Battery Wire Soldering

I need a precise, low-resistance solder joint made on the battery leads of my drone. The task is straightforward: take the existing electrical wire coming from...

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Relocate and Reinstall Used AC

I have just purchased my neighbour’s central air-conditioning system and need a qualified HVAC professional to handle the entire transfer. The unit must be care...

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Framework RP2350 Expansion Card Design

I need a complete electrical and mechanical design for a Framework Laptop expansion card built around the RP235xA microcontroller in the 30-GPIO QFN-60 package....

HL-40498706

ATTiny85 Timer Switch PCB

I need a compact, single-sided board built around an ATTiny85 that lets me toggle two independent loads on and off under firmware-controlled timing. The unit wi...

HL-40497498

Riset Micro Motor DC Low Stall

Saya sedang mengembangkan mainan pesawat bertenaga solar cell (2 V DC / 55 mA) dan memerlukan referensi micro motor DC ber-stall current rendah yang benar-benar...

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BLE Enabled ESP32 Umpire Indicator Prototype

ESP32 Bluetooth-Enabled Umpire Indicator Prototype with Rotary Encoders (BLE Sync to Mobile App) *We have two full time App developers that you can work with. P...

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Power Electronics Control Program Development -- 2

I'm seeking an experienced programmer with a background in power electronics. The task involves writing a C program to generate a variable frequency (0-100Hz) a...

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Python Automation on Raspberry Pi

Looking for an experienced Python/Embedded developer to adapt an existing Raspberry Pi pressure-control project for a Nano-based board. Current application: - R...

HL-40496385

SyncStim ESP32 Firmware and Optional PCB Design

ESP32 firmware for an experimental, battery-powered maker devkit (SyncStim) that plays a 10 ms audio burst and, at a configurable interval, fires a charge-balan...

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Raspberry Pi Sensor Project

I'm looking for an experienced Raspberry Pi developer to help with a sensor data logging project. The project involves: - Designing the circuit - Writing the co...

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Arduino Hardware Assembly & Soldering

I’ve already designed a small Arduino-based build and gathered every part you’ll need—board, shields, sensors, add-on modules, wiring, and headers. What I now r...

HL-40494394

Vehicle Device Control System

I am building a small system that will ride on a vehicle and needs smart power and signal management. Two of the three loads are a Camera and a Transmitter; the...

HL-40494231

Microcontroller SPI Control Board and Application Design

I have a concept for a small control board that will act purely as a communication interface; the brain must be a microcontroller and every line on the board wi...

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Acelerometer Compact Motion-Tracking Sensor Node Design with bluetooth and memory

Project Description: I am looking for an experienced electronics design engineer with a background in Nordic Semiconductor SoCs to develop a compact, high-effic...

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ESP32 Firmware Development

I'm looking for an experienced firmware developer to work on an ESP32 microcontroller. The project involves integrating Wi-Fi connectivity and sensor integratio...

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ATTiny85 Sensor Alert Code

I’m building a tiny monitoring node around an ATTiny85 that has only four external components: a single LED, an NTC thermistor, a Hall-effect sensor and a piezo...

HL-40492408

Smart Home Controller PCB Design

PCB Design Requirement Document Project: ARC LABS Smart Home Automation Controller About Us ARC LABS is an IoT and Embedded Systems company focused on developin...

HL-40492002

Off-Grid Solar Battery Installation

Hello, I am currently off-grid with a 8.85kw solar array and an incapacitated SolarEdge Inverter. The contractor that did the installation back in 2019, not onl...

HL-40491297

2-Layer Automotive PCB Design: Multi-Port USB Charger & Data Bypass Module (JLCPCB/LCSC Optimized)

Hello, I need a schematic and 2-layer PCB layout for an automotive-grade Multi-Port USB Charger box. It's a hardware-only project (no firmware/software). Key Go...

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STM32H743 DAQ Module Development

I need an experienced embedded developer to build the firmware modules that will turn an STM32H743 board into a reliable, high-speed data-acquisition unit. The...

HL-40488351

Review My Circuit Schematic - Simple battery balancer

note: this is MCU controlled at 3.3V, the controller is for both a single 12v gel battery or 1x 24V or 2x 12V gel batteries for 24V, the charge amps should not...

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Annular ESP32 PCB Design

I’m building a two-layer, donut-shaped PCB around ESP32-WROOM-32U. The outer diameter must not exceed 92 mm, the inner cut-out must remain at least 54 mm, leavi...

HL-40485444

FMCW Radar-Based Terrain Following Sensor for Agricultural Drones

Project Overview We are looking for an experienced Radar Engineer / Embedded Systems Engineer / RF Design to develop a compact FMCW radar sensor for agricultura...

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Portable Multimodal Analyzer PCB Design - 02/06/2026 02:35 EDT

We are developing a portable, handheld research instrument that combines two measurement modalities in a single pen-form device: 1. ELECTRICAL IMPEDANCE SPECTRO...

HL-40484410

Custom Jukebox Controller PCB Design

Project Title: Design a Custom Jukebox Controller PCB (Drop-In Replacement) Project Overview I am developing a modern Linux-based digital jukebox platform and r...

HL-40484425

3.3 V-to-6 V Pulse Converter

I’m running a Teensy 4.1 that delivers a 0 – 3.3 V square wave at 80 kHz. For my signal-transmission stage I must boost that logic-level waveform to a clean +6...

HL-40483978

Portable Multimodal Analyzer PCB Design

We are developing a portable, handheld research instrument that combines two measurement modalities in a single pen-form device: 1. ELECTRICAL IMPEDANCE SPECTRO...

HL-40483346

Battery-Powered LoRa PCB Design

I'm building a compact, battery-powered LoRa sensor node for permanent outdoor deployment, so the board must combine low-power performance with solid RF discipl...

HL-40481265

FOC BLDC Driver for Roboticse

I am developing a compact rotary actuator for a robot joint and need a full Field-Oriented Control (FOC) driver that I can integrate straight into the mechanica...