Analog Electronics projects — HireLancer archive

ID / Date Listing

Airflow-Controlled Dual Heater PCB

I need a simple and rock-solid analog circuit that drives two 24 V DC heater coils from a single supply. The secondary coil is always energised (between 15-30 W...

HL-40098089

SMART LPG MONITORING DEVICE

Developing a battery-backed LPG gas safety device and looking for a senior embedded hardware engineer for EVT design.

HL-40094469

PCB Design for Bathroom Appliance

I need a PCB designed for a bathroom appliance. The PCB should include a 12V relay and a 5V converter. Ideal skills and experience: - Proficiency in PCB design...

HL-40094170

Mixed-Signal Power Converter Design

I need a complete mixed-signal circuit that handles power conversion while integrating voltage regulation, power switching, and energy-storage sections in one c...

HL-40078698

LED Flash Circuit for BL-600

I need a simple, reliable way to make my BL-600 shock detector flash a light exactly once each time its output toggles. The detector runs at 3 V, and the whole...

HL-40076159

PCB Design - IR LED Tracking Marker - Self contained

We are looking for an experienced electronics / PCB design engineer to design a self-contained IR LED tracking marker for a computer-vision system. The project...

HL-40067885

12V Circuit Board Design

I'm looking for a custom circuit board to power a 12V solenoid and a small 12V motor. The circuit board should regulate power supply and remain active until tri...

HL-40062437

Custom Voltage Output Circuit Board

I need a small circuit board that takes two 20VDC hot-swap power inputs and provides multiple voltage outputs. Requirements: - Voltage Outputs: 5VDC, 12VDC, 20V...

HL-40061056

SSL Duality Main Section Schematic

I am piecing together a stripped-down console for studio recording and only need the heart of the desk: the master section of an SSL Duality (or a very close eq...

HL-40048003

Flexible Game Controller PCB Design -- 2

I’m building a next-generation video-game controller accessory and need a seasoned engineer to transform the idea into a production-ready flexible PCB. The boar...

HL-40036527

High-Voltage Power Management Circuit

I need a complete analog power-management solution that comfortably operates above 24 V; the working range will likely sit between 28 V and 48 V. I already have...

HL-40021366

Urgent Audio Transformer Overcurrent Fix

Tôi đang vướng lỗi quá dòng trên bo mạch xử lý biến áp âm thanh và cần một kỹ sư có mặt tại Hà Nội để khắc phục ngay. Mạch hiện hoạt động không ổn định, đo dòng...

HL-40011388

Mixed-Signal Temperature Front-End

Mixed Signal temperature Sensor Front End Simulate in PSpice. Connect device physics → analog front-end → digital interface. Optimize for noise, bandwidth, powe...

HL-40008241

Phase Angle Measurement Circuit Design

I need a compact, reliable circuit that can determine the phase angle between two voltage waveforms that may vary anywhere from 1 mV up to 250 V while operating...

HL-39994159

Teensy 4.1 One-Cycle FSK

I’m building a proof-of-concept transmitter that must output a single, precisely timed cycle of FSK per data bit on a Teensy 4.1. The bit stream is stored exact...

HL-39985952

Prototype a Low-Voltage Converter

Design and prototype a low-voltage doubler or boost at minimal BOM-cost. ======= CLIENT A nonprofit electronics mentoring project for disadvantaged teenagers. W...

HL-39985979

AD7512-ADG5436 Switch Migration

My existing design relies on the AD7512 protected dual SPDT CMOS analog switch in a 14-pin PDIP package. Production stock has vanished, so I am moving to the An...

HL-39984079

Automatic TP5100 Charge Cutoff Circuit

I’m using a 2-cell Li-ion pack (8.4 V full, 7.4 V nominal) with the TP5100 charging module and I need an add-on circuit that will: • Drop the adapter input the...

HL-39981626

Capacitive Touchpad PCB Design

I'm looking for an experienced PCB designer to create a capacitive touchpad with 4 simple touch detection inputs. The touchpad dimensions should be 2 inches by...

HL-39980770

Designing a fully-differential Miller compensated two-stage opamp with CMFB.

Goal You are tasked with designing a fully-differential Miller compensated two-stage opamp with CMFB. This opamp will be eventually used to form an inverting am...

HL-39980673

Electrical Engineering / Electrical Principles / Electrical Controls Calculations

I’m looking for a tutor who can guide me through electrical-engineering problems. My priority is mastering the underlying principles of DC and AC circuits, semi...

HL-39970442

LC Resonator Frequency Control Subsystem

[This AI generated description is only partially accurate. A more accurate one will be provided] I have two separate LC tanks that must run in lock-step at arou...

HL-39964642

Analog Circuit Design for Consumer Electronics

I want a breadboard circuit that can be used to detect a voltage (any voltage from 9v - 53v on a device that delivers 53v for 0.1 seconds through 2 wires). I wa...

HL-39961508

Patch ECG Wearable Prototype Design

I am looking to collaborate with an Embedded Systems or Electronics Engineer to design and build a wearable biosignal acquisition prototype. The goal of this pr...

HL-39916751

Single-Plane Circuit Simplification

I need a clean, single-plane circuit designed and fully simplified so I can drop it straight into a larger board layout. The circuit will include resistors, cap...

HL-39956407

Low-Cost Analog Signal Circuit

I’m putting together a small, budget-sensitive project that calls for a straightforward analog signal-processing circuit working strictly at low frequencies. Th...

HL-39953106

Portable Industrial DAQ Prototype

I need a complete portable data-acquisition system. The unit must simultaneously log pressure, vibration, ultrasonic and TDC/RPM signals coming from piezoelectr...

HL-39940370

Basic Wind Turbine AC-DC Converter

I need a straightforward circuit that turns the small-scale AC output of my miniature wind generator (i have followed a YouTube guide to make the generator, a b...

HL-39937926

ESP32 Kelvin Resistance Measurement Setup

I need a complete, ready-to-flash solution that lets my ESP32 measure very low resistances—from 0.1 Ω up to 10 Ω—using a true 4-wire Kelvin technique. This is a...

HL-39937455

ESP32-Based 18V / 5000A DC Rectifier Monitoring System – Industrial Grade (India Only)

Need a complete hardware + firmware design for a 0–18V, 0–5000A DC rectifier monitoring system using ESP32-WROOM. The system must accurately measure voltage and...

HL-39932140

Low-Cost Voltage Regulated Circuit Design

I need a compact, low-cost circuit that automatically cuts off power when the supply voltage drops below 3.3V. The input voltage will range from 4V to 3.3V, and...

HL-39927954

Outdoor Concrete Yield-Stress Sensor

I’m developing a thin capacitive patch that can sit directly on fresh concrete and track yield-stress development in real time. The goal is true continuous moni...

HL-39925481

PSK RF Jammer Circuit

I’m putting together a small research project that calls for an RF jammer able to suppress PSK signals in the 0-500 Hz range. I’m looking for an intermediate-le...

HL-39913430

Design 150W Sine Inverter

I need a compact, 150 W Pure-sine-wave 400 Hz inverter purpose-built for an industrial environment. It will run from a 24 V DC battery rail and must deliver a c...

HL-39907948

FPGA-Controlled Precision Current Source Project

I need a complete design for a constant-current driver that can source or sink programmable currents through five pairs of output pins, all of which must be abl...

HL-39897105

Multi-Layer PCB for Electronics

I am currently working on improving an already existing open-source project for personal use. It is an electromagnetic resonance drawing tablet implementation s...

HL-39894533

Wastewater EM Flow Meter Hardware

I need the complete electronics hardware with softwarefor a compact electromagnetic flow-meter dedicated to wastewater lines in a water-management setting. The...

HL-39893940

Basic QRNG Electrical Schematic

I’m building a Quantum Random Number Generator (QRNG) that will sit inside an industrial setup and need a clear, entry-level electrical schematic to guide the n...

HL-39892317

Compact Line-Follower PCB Design

I’m building a line-following robot that must stay small yet reliably drive two 4 A motors and read a bank of analog QTR sensors. I need a concise, ready-to-rou...

HL-39890005

Truck-Compatible Analog Control Module

Project Specification Output Voltage Control – Version 1.0 Environment: Automotive / Truck (12 V – 32 V systems, high-voltage transients) Type: Analog control m...