Signal Processing projects — HireLancer archive

ID / Date Listing

Radiomaster XR1 Clone Design

I need a complete KiCad design that reproduces the functionality of the Radiomaster XR1 transmitter. Exact mechanical dimensions are not critical (although size...

HL-40505080

Power Systems Protection PSCAD Modeling

Send something like this: > Hi, > > I need someone to complete **all PSCAD-related work** for a Protection Systems project. > > Scope of work: > > * Build the c...

HL-40503499

ADS1298 ECG Front-End Design

I need a compact, low-noise analog front end for a multi-lead ECG built around the Texas Instruments ADS1298. The goal is a fully validated schematic and PCB la...

HL-40502059

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...

HL-40500501

Part-Time Motor Control PCB Engineer

I need a senior-level electrical engineer who can split time between working remotely and being on site in Orange County, CA. The project centers on motor-contr...

HL-40499596

Ultrasonic Pest Repellent PCB Design

I need a compact, kitchen-chimney-friendly PCB that drives an ultrasonic transducer in the 40 kHz – 60 kHz band from an AC-mains supply. The goal is a reliable,...

HL-40498058

APDU Code Conversion To ATR

I have an existing code-base that currently exchanges full APDU command sequences; however, for this project I want it trimmed down so it sends only the ATR. Th...

HL-40496774

Custom RFID Sensing Hardware Development -- 2

RFID Hardware Product Development (NDA Required) We are looking for an experienced Hardware Engineer / RFID Specialist to design and develop a custom RFID-based...

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...

HL-40495467

Advanced Motion Analysis for Eye-Tracking

Project Overview: We are building a data analysis platform and require a Computer Vision / Digital Signal Processing expert to implement a server-side automated...

HL-40495294

2026 Ready PCB Redesign

I have the full schematic for working legacy PCB. I need it redesigned and modernised into a new board using current components, while keeping the original boar...

HL-40495199

Home Automation Touch Sensor Circuit

I have a small home-automation module that needs a reliable touch interface, so the task is to engineer a 5 V circuit around the TTP223 that cleanly switches be...

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...

HL-40493725

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-40491167

Uneven Amplitude Excitation Microstrip Feed

I want to design a high gain antenna. Even amplitude excitation leads to side lobe levels no better than -13.26 dB. I want uneven amplitude excitation using che...

HL-40490994

KICAD PCB Design for Radio

I'm seeking an experienced PCB designer to create a KICAD PCB design. Deliverables: This is a PCB Design coursework based on the STM3210E-EVAL reference design...

HL-40490537

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-40490390

Forensic Audio Tampering Analysis

I have a 7–8-minute recording from a preliminary hearing, provided on CD, that must stand up to legal scrutiny. Your assignment is to carry out a full forensic...

HL-40489943

LTSpice Simulation Assistance Needed

I am looking for LTSpice expert who can deliver simulation result per project. It is not one time project and if you are good candidate, we can cooperate for a...

HL-40489241

Forensic Audio Tampering Analysis

I have a 7–8-minute recording from a preliminary hearing, provided on CD, that must stand up to legal scrutiny. Your assignment is to carry out a full forensic...

HL-40488688

Vibration Analytics & Predictive Maintenance Suite

I am commissioning a full-featured vibration analytics and predictive maintenance platform dedicated to rotating equipment. The end product must run smoothly on...

HL-40487894

Custom RFID Sensing Hardware Development

RFID Hardware Product Development (NDA Required) We are looking for an experienced Hardware Engineer / RFID Specialist to design and develop a custom RFID-based...

HL-40485456

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-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-40483807

KiCad v10.0 Schematic Creation from PDF -- 2

This task is for generating a KiCad v10.0 schematic from a given PDF. And if someone wants to also generate the pcb layout for it is welcome but the budget is v...

HL-40483677

Hardware/Firmware Engineering for AI Companion

Lead Hardware/Firmware Engineer: ESP32-S3 + AI Voice Integration for Smart Companion About the Project: Beast Buddiez We are developing a revolutionary physical...

HL-40482886

Nvidia Jetson GMSL/MIPI Debugging

I need help debugging an Nvidia Jetson Orin setup with both MIPI and GMSL cameras. Currently, the GMSL link is locked, but there's no CSI output. Key tasks incl...

HL-40480505

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-40478910

Audio to Ultrasonic Hardware Prototype Development

Looking for an experienced Electronics Engineer to develop a prototype capable of converting audio input into ultrasonic output. Requirements: * Audio input sup...

HL-40476295

ESP32 LoRa-UWB RTK Tracker Prototype

I’m building a proof-of-concept vehicle tracker that pairs the flexibility of an ESP32 with both LoRa and UWB radios and adds an RTK-capable GNSS module for cen...

HL-40477566

Op-Amp PCB Split Redesign

I already have a complete, proven op-amp schematic with a matching single-board layout. For my next round of experiments I want to separate that design into fou...

HL-40477578

5W Class-AB Amp PCB Design

I need a compact 5 W class-AB audio amplifier that can run from a single 12 V supply. Your task is to create the full KiCad project—clean schematic, well-routed...

HL-40477592

Swappable NE5532 Audio Preamp PCB

I want a small, low-noise pre-amplifier built around the NE5532, powered from an external ±15 V AC adapter. The board will slot straight into my DIY projects, s...

HL-40474690

Signal Processing

I have designed a custom PCB that picks up a small AC signal (~2V amplitude, 10 ns rise time, 250 ns decay) from a sensor operating on a high-voltage DC bias ra...

HL-40473709

Raspberry Pi Satellite Hotspot Software

I want to turn a standard Raspberry Pi 4 into a true plug-and-play satellite transceiver: power it up, point the attached SDR-based antenna to the sky, and inst...

HL-40472158

Port ESP32 ADS1299 Firmware

I already have a stable firmware that runs on an ESP32-WROVER-E and drives two daisy-chained ADS1299s for 16 EEG channels. Now the hardware is moving to an ESP3...

HL-40471276

Modbus Gateway Voltage & PF Control

I need a substation gateway configured so it can issue real-time set-points for both voltage and power-factor on a fleet of SMA PV inverters. All messaging must...

HL-40470914

pcb design

We are searching for experienced freelancer with handson experience designing pcb for production with onboard esp. Please contact me for more information.