Analog Electronics projects — HireLancer archive

ID / Date Listing

Ejercicios EasyEDA Electrónica Industrial

Necesito apoyo para entregar dos ejercicios del módulo de Mantenimiento de Equipos de Electrónica Industrial (CGFS). Cada ejercicio debe diseñarse en EasyEDA y...

HL-40250020

We need Electronics/ Elect Engineers for regular projects

Hello; I’m putting together a small, reliable pool of electronic / electrical engineers I can call on for recurring client work. Typical deliverables could incl...

HL-40249550

Relay-Based Input/Output Module Development

I'm looking for an experienced engineer to design and build a circuit board module for mining machinery. The module will handle both digital and analog signals....

HL-40249155

Hardware Engineer: 8-Ch Car Audio Unit with LiFePO4 Power Buffer (Architecture & Sourcing)

I am looking for a Hardware/Electronics Engineer to design the internal architecture for an integrated car audio enhancement unit. I will handle the DSP softwar...

HL-40248495

Diseño de Circuito ANC para Cascos Peltor ( Active Noise Cancelling)

Trabajo en un entorno con niveles de ruido tan altos que, aun usando los protectores auditivos 3M Peltor de diferentes db, no me protegen del todo. Busco un/a i...

HL-40248036

Developing PCB for Ultrasonic Transducer Driver

I'm looking for an experienced pcb developer to create a professional-grade pcb of driver for ultrasonic transducer. Driver should give output 120w 40khz. Key R...

HL-40245345

12V Power Supply Board for Sensors

I need a 12V USB charger board designed primarily for powering sensors and modules. The board should provide a standard 5V output . Requirements: - 12V input js...

HL-40242864

High-Speed PCB, power boards& RF Design Mentoring

I’m looking for an experienced board designer who can guide me step-by-step through real projects. My immediate priority is high-speed digital design: everythin...

HL-40238418

ESP32 Low-Power Audio Device — Custom PC

Description We're developing a battery-powered consumer audio device that plays pre-loaded audio recordings on a daily schedule (three fixed times per day). Aud...

HL-40235527

Esp32-s3 circuit design

I need help with a circuit design for a small engine tachometer. Issues with noise and pulse ringing at the moment. If you have experience please let me know

HL-40222518

Analog Signal Processing PCB Design

I need a compact PCB developed for a one-off project that focuses purely on analog signal processing. The core task is to turn my hand-drawn schematic into a pr...

HL-40215073

Miniature 433 MHz PCB Layout

I already have a complete analog FM-transmitter schematic for 433 MHz (BFR93W transistor, electret mic front end, bias and tank network). What I need now is a c...

HL-40211934

Design and build a 741 operational amplifier.

Peace be upon you. I want a complete explanation of the operational amplifier circuit, with practical implementation from scratch using transistors, and buildin...

HL-40211784

Differential Op-Amp Implementation Guide

Peace be upon you. I want someone to explain to me this operational amplifier circuit, which is the op-amp 741. I want a person who can explain it to me fully a...

HL-40207261

Optimize Mission-Critical Control Boards

I maintain a fleet of mission-critical electronic control boards that must run flawlessly around the clock. Although the hardware is operational, I want to sque...

HL-40204246

Balanced Audio PCB Layout Design

I already have the full Bill of Materials and a set of clear reference photos; what I still need is a production-ready PCB layout that ties everything together....

HL-40199625

8-Channel Bluetooth System Design

I need a complete mixed-signal design for an eight-channel Bluetooth communication system: four inputs for data acquisition and four outputs for actuation or st...

HL-40197368

LaTeX Analog Circuit Diagram

I’m finishing a paper and need a neat, publication-ready analog circuit diagram drawn entirely in LaTeX. The schematic should rely exclusively on transistors FI...

HL-40193877

Design Audio Conditioning Circuit Schematic

I am integrating a line-level audio source (peaks up to 5 Vpp) into the 12-bit ADC of an STM32 that only tolerates 0 V–3.3 V. I need a compact conditioning stag...

HL-40169102

On-Site Circuits & Networks Tutor

I’m looking for someone who can meet me face-to-face and guide me through intermediate material in circuits and networks. My focus is on analog circuits and the...

HL-40162347

Transformer-Rectifier Design for DC Lighting

I need a design and specification for a transformer-rectifier unit to power DC lighting. The specifications are: - Input: 120VAC - Output: 74VDC - Power Rating:...

HL-40147953

40 GHz Impedance Matching Circuit Design

I need an L-network impedance matching circuit designed for discrete frequencies: 18 GHz, 22 GHz, 26.5 GHz, 30 GHz, 33.2 GHz, and 40 GHz. The circuit should han...

HL-40145384

Battery-Powered PCB Design for Radio

I need a PCB designed for a personal project. The PCB is primarily for power management and is intended to be used in a battery-powered system utilizing usb-c c...

HL-40142477

Tunable UWB LNA Design in ADS

I need a full ADS design flow that faithfully recreates the ultra-wideband LNA shown in the PDF I have attached. The goal is to end up with a working, voltage-c...

HL-40141050

Tunable UWB LNA Design ADS

I need a complete, simulation-ready design of a tunable ultrawideband low-noise amplifier that operates from 3.1 GHz to 10.6 GHz. Advanced Design System (Keysig...

HL-40140508

Mixed-Signal Communication Circuit Design -- 2

I need a mixed-signal circuit tailored for a communication system. The design must seamlessly combine signal modulation with accurate data conversion, forming t...

HL-40140485

Mixed-Signal Communication Circuit Design

I need a mixed-signal circuit tailored for a communication system. The design must seamlessly combine signal modulation with accurate data conversion, forming t...

HL-40137742

Single-Layer PCB Design for Home automation using esp32

I'm looking for an experienced PCB designer to create a single-layer PCB for a consumer electronics radio application. The PCB needs to be large, over 10 cm x 1...

HL-40136207

ESP32-S3 Schematic Design

I need a detailed schematic design for an ESP32-S3 embedded system. The design should integrate various sensors and power management components. Requirements: -...

HL-40135836

Mixed Signal Circuit Design Tool

I need a standalone application that lets me design mixed-signal circuits from start to finish. The workflow should flow naturally from schematic capture to boa...

HL-40135486

Motion-Sensing Power Steering Controller

I need a motion-sensing power steering pump controller using a Hall sensor. This system should detect steering rotation and utilize an NE555 timer to generate a...

HL-40135497

Custom Mixed-Signal Circuit Design

I need an experienced electrical engineer to take a mixed-signal concept from idea to production-ready documentation. The project is firmly centred on circuit d...

HL-40131986

Mixed-Signal Signal-Processing Circuit Design

I have a signal-processing task that calls for a mixed-signal approach: an analog front-end to condition the incoming signals and a microcontroller-based digita...

HL-40110047

Device PCB Prototype Design

I need a hardware engineer who can take full ownership of the schematic capture, multilayer PCB layout and initial bring-up. The work covers analog, digital and...

HL-40109077

Compact USB-C PD Sink PCB

Project Scope Design a PCB that accepts three USB-C power-only inputs and provides one USB-C output. All USB-C connectors will be off-board and connected to the...

HL-40107906

Tennis for Two: 1958 Game Replica

I am looking for someone to design and build a fully working physical model of Tennis for Two, the 1958 analog video game created by William Higinbotham. The go...

HL-40106682

Low-Power Delay Timer Circuit

I’m looking for a discrete-component solution that lets a momentary N.O. dry contact trigger an adjustable delay of 5-60 s (via an off-board potentiometer, only...

HL-40105833

Senior Embedded Engineer (Freelance) – Semi Auto Biochemistry Analyzer

Senior Embedded Engineer (Freelance) – Semi Auto Biochemistry Analyzer Description: We require a senior embedded systems engineer to design, refine, and validat...

HL-40104495

KiCad Schematic and PCB Designer

I'm seeking an experienced KiCad designer to create both schematics and PCB layouts for my project. I have some components and footprints, but will need advice...

HL-40103369

ESP32 Alarm PCB Design

I have put together a clear block diagram for an ESP32-based alarm controller and now need the full KiCad schematic and a production-ready PCB layout. The core...