Analog Electronics projects — HireLancer archive

ID / Date Listing

Complex PCB Schematic Design for Industrial Radio

I'm seeking an experienced PCB designer to create a complex, multi-layer schematic for an industrial radio. The schematic will incorporate analog, digital, and...

HL-40633496

Digital Control System Design for Radio

I'm seeking an experienced circuit designer to create a digital control system for a Bi Color LED Matrix. The core component of this system will be a microcontr...

HL-40624367

12V Square Wave Signal Generator

I need a square wave signal generator with the following specifications: Output Voltage: 12V Frequency Range: 100 kHz to 1 MHz Duty Cycle: Variable Additional R...

HL-40615394

Programmable Ultrasonic Cat Repellent Device

I am looking for a freelancer with experience in electronics design and prototyping to build a programmable ultrasonic cat repellent device. The device should m...

HL-40609476

Phase 1 (schematics only) - Industrial Embedded Product Redesign (EasyEDA)

Schematic Revision & PCB Design for Industrial Embedded Product (EasyEDA) I am looking for an experienced hardware design engineer with proven expertise in indu...

HL-40608909

Optics Engineer for Consumer Electro-Optical Device

We are offering a short-term contract for a qualified Optics Engineer to assist us in the development of a new consumer-grade electro-optical device. The qualif...

HL-40605429

Balanced XLR Phono Preamp Design

I’m looking to develop a high-quality analogue phono preamp that feeds a Balanced XLR output. The core of the project is an accurate, low-noise circuit that pre...

HL-40598444

Low Battery Detection System

I need a small pcb board powered by 9V battery that is connected with the board through a JST-ph 2.0 mm 2 pin connector The board has one 9V+ and 9V- output and...

HL-40596123

2-Bit Transistor Counter Design

أرغب في إنجاز مشروع تجريبي صغير لِعَدٍّ ثنائي البِت مبني بالكامل على الترانزستورات (من دون أي دوائر متكاملة). ما أحتاجه بالتحديد هو مشاركتي التصميم العملي للدائ...

HL-40591659

Battery-Powered Analog PCB Design

I have an all-analog circuit that I now need translated into a clean, production-ready hardware package. The job is two-fold: first, capture the complete schema...

HL-40586924

Waterproof Anchor Control PCB, Case and Waterproof external connectors

I need a compact, reliable PCB and a compact case design. The board contains an ESP32 that will run the anchor-control logic on my boat and live inside a fully...

HL-40585833

Compact BJT 2-Bit Counter

need a straightforward 2-bit counter designed entirely with discrete Bipolar Junction Transistor (BJT) logic. My priority is to keep the component count as low...

HL-40584812

RF Amplifier Circuit Design

I'm seeking an experienced RF circuit designer to develop an RF amplifier. The amplifier should operate in the high-frequency range of 3 GHz to 30 GHz, with a m...

HL-40581981

Design an oscillator circuit using a 555 IC to produce a square waveform.

The square wave should have an equal mark-to-space ratio, a frequency equal to that of the resonant frequency of the metal bar estimated in Part 1, and an outpu...

HL-40579365

Low-Noise 24 V Audio PSU Design

I’m putting together a single-rail power supply for sensitive audio gear and need a clean, hum-free output. The brief is straightforward: • Topology: prefer an...

HL-40577097

Compact Driver Stage Design for Teensy 4.1

500mA output injected into the power line This is a workspace for: I have a Teensy 4.1 producing a 0–3.3 V, 80 kHz square wave that must be pushed onto a power...

HL-40572672

Mixed-Signal ADC/DAC Circuit Design

I am building a board that needs a compact mixed-signal section dedicated to high-accuracy data conversion. The job is to design the entire ADC/DAC front-end, m...

HL-40570244

Industrial Instrumentation Electronics Consultant

Requirement: Electronics Hardware Design Consultant (Industrial Instrumentation) We are looking for an experienced Electronics Hardware Design Consultant to sup...

HL-40568798

Add Connectors to KiCad PCB

An existing KiCad-based board is ready for its next revision. The design itself is stable; all I need now is to introduce 1–2 new connectors and make sure they...

HL-40567174

Electronics Design Engineer for Medical Neurostimulation Device -- 2

1 Project overview We are developing a medical neurostimulation device intended for therapeutic applications, including tinnitus treatment. The system consists...

HL-40565429

Modular Eddy Current Purity Tester -- 2

I need a compact, modular eddy-current device built from the ground up to verify the purity of non-ferrous metals during material research and development. Beca...

HL-40561845

MOSFET-Controlled NTC Bypass

I need a compact RC timing network that drives a MOSFET to short-out an NTC after start-up so the circuit acts as an inrush-current limiter only for the first f...

HL-40559840

Double-Layer PCB Design for Gadgets

I’m developing a new consumer-electronics device and I need a reliable double-layer PCB designed from the ground up. I will supply the schematic on paper. The p...

HL-40553074

High-Voltage 2kV PCB Design with ADC/DAC

High voltage till 2kV with transformer and signal conditioning (ADC,DAC) on the same PCB with around 50 components, with 4 layer board

HL-40551320

PCB Design Update for Control Board

We’re reaching out to see if your team can support a PCB design update for an embedded control board we’re working on. We currently have a functional prototype...

HL-40534429

ESP32 IoT Control Board Design

I need a custom control board built around the ESP32 for an upcoming IoT monitoring system. The hardware must accept four analog sensor inputs, provide a robust...

HL-40531730

Electronics Hardware Consulting Support

I’m looking for a seasoned electronics engineer who can serve as a sounding board for a brand-new hardware device we have in the works. You’ll dive into our cur...

HL-40518904

Compact PCB Layout Design

I have a complete electronic schematic and need a PCB layout based on it. The project was prepared in Fusion Electronics, but the PCB may also be designed in Ea...

HL-40516247

±3 V 80 kHz Line Driver

I have a Teensy 4.1 producing a 0–3.3 V, 80 kHz square wave that must be pushed onto a power line as a clean ±3 V logic-level signal. The link sits inside an in...

HL-40511842

Dual-Output Audio Processor Design, Guitar/modular CV efx unit.

I'm seeking an experienced audio engineer to design a dual-output audio processor with two voltage-controlled frequency boundaries. This device will split an in...

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-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-40495057

6S BMS PCB on EasyEDA

I’m developing a six-cell lithium battery management system and need the PCB laid out in EasyEDA Pro. Show me previous BMS or power-electronics, or similarly de...

HL-40492709

Expert Hardware Design and Debugging Engineer

Location: New Delhi Employment Type: Full-Time (On site) Department: R&D / Hardware Engineering Compensation: ₹4.30 LPA – ₹6.45LPA About Us We are an early-stag...

HL-40491056

Development of plug-in boards

For an R&D platform based on the SAM E54 Xplained PRO, we would like to make several (starting with 6) plug-in boards. The boards should be placed on one of the...

HL-40490029

Analog Control PCB Design

I need an analog circuit designed from the ground up and then laid out on a production-ready PCB for a consumer-electronics product. The finished board must ope...

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-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-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...