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An ultra-low power soil moisture sensor with an e-paper display

E-paper houseplant watering monitor

design

Design for Disability

PFI capacitors (50kVAR, 480V) showing high amperage (12–18A) on the earthing strip? Learn why harmonics, leakage currents & grounding issues

In this tutorial you will design and build your own keyboard. You will also learn all the essentials to design and build any electronics.

How To Design And Build Your Own Keyboard

Using Machine Learning to forecast load, balance energy supply & reduce costs in hybrid power systems! ⚡ #AI #SmartGrid #EnergyOptimization

An educational 8 bit computer based on a few ATmega micro controllers

IVATAR80 Computer

Sometimes, a project comes to you and you think you know exactly how to pull it off. It turns out you know just enough to have a bad time.

Make Some Failure

Tiny displays for tiny raspberry

RPI TinynumberHat

Multiple Alarms, green or red LEDs with dimmer, snooze, melody alarm (optional sound chip), date and more.

Large digit LED Clock DIY Kit for Arduino Nano

PSU module for standard breadboards with switching regulators and integrated CH340 USB UART bridge.

Breadboard Power Supply 3.3V, 5V, 12V and USB UART

Up to 8 Arduino MEGA2560 / UNO Shields for max. 64 addressable relays.

8-Channel, stackable I2C Relay Shield for Arduino

Up to 8 Arduino UNO Shields addressable and stackable.

4-Channel, stackable I2C Relay Shield for Arduino

Atomic clock Application Development Kit for the new atomic clock radio standard (North America)

EverSet ES100 ADK for WWVB BPSK

CANADUINO soldering kit including D1 Mini Wi-Fi module

4-Channel Wi-Fi Relay DIY soldering Kit

CANADUINO PLC-100 V2 DIY Kit is a fully fitted, tiny Programmable Logic Controller for Arduino Nano.

MEGA328 PLC-100 DIY Kit V2 (for Arduino Nano)

Super sensitive, high-quality atomic time radio signal receiver for Middle and West Europe.

77.5kHz Atomic Clock Receiver V4 (DCF77)

Super sensitive, high-quality atomic time radio signal receiver for North America, Japan and England-Ireland.

60kHz Atomic Clock Receiver V4 (WWVB, MSF, JJY60)

This standalone programmer simplifies the process of installing the Arduino Uno bootloader onto an Atmega328P-PU microcontroller.

Stand-Alone Arduino Bootloader Programmer V3 for A

universal portable DC-DC converter

Vectatus

How can you make a simple object more enjoyable, by adding a moving background !! Here is the goal of this the mecanic Fountain !

Mecanic Fountain

Trending projects See more

Off-grid, mesh network messaging on any radio or frequency. End-to-end encryption included.

Direbox - Off-grid mesh chat using any radio

TrafficMonitor.ai built with edge ML for object detection and radar for speed monitoring

Traffic Monitor

This DIY Smart Treat Locker with Apple Watch Synchronization will only grant access to your chocolate, when you have truly earned it.

ChocoVault - Earn your Treats!

This project is an exploration into a series of tactical handheld SDR units. Detect, Decode, demod, record/ playback IQ. DF, & Classify.

Tactical SDR

Blinkenlights and vectordot graphics from 1959

Replica of the PDP-1: PiDP-1

MeshWalkie: A handheld Compact Wireless Multi-Tool for Lora and Hackers.

MeshWalkie

Raspberry Pi5, RTL-SDR, and custom keyboard

Cyberdeck Handheld

A 3D printed, gridfinity compatible, linear and rotary positioning system for science and research applications designed in FreeCAD.

3D Printed Linear and Rotary Positioning Stages

Made a studio light that has warm, cool, and RGB LEDs all driven through a custom PICO driver circuit.

PICO Studio Light

Follow for the 'Hacklet' and latest news about hackaday.io

Hackaday.io Project

I am using this project to document the changes and additions I make to my Adafruit Macropad firmware. Currently written in CircuitPython

Adafruit Macropad Modding

Open-source and open-hardware custom scientific RPN calculator

OpenRPNCalc

Recreating a small and updated version of the legendary 2-player trackball arcade game TEHKAN WORD CUP

MINI ARCADE TEHKAN WORLD CUP WITH TRACKBALLS 2P

CD quality sound processing, integrated with Arduino sketches

Teensy Audio Library

This is a relatively simple, visually effective balancing robot project that only requires four components to make.

Arduino two weel self Balancing Robot

Simple to build ESP32 VU meter on Round Dispalys with Peak Meters.

ESP32 Analog style VU meter with GC9A01 Round Disp

A complete low-power gamma ray spectrometer that can be used by itself or integrated into other projects

Pomelo: Gamma Spectroscopy Module

Waterwheel winch drive for tracking solar panels and other uses too. Replaces electric motors, low tech, low cost yet accurate enough.

The nano waterwheel winch drive project

Small and simple software for plotting data from serial port

SerialPlot - Realtime Plotting Software

A real single-board computer: complete stand-alone Cortex-M4 playground. Based on ATSAMD51J20A, with 320x240 LCD and 40-key keyboard.

Rimer SBC

Launch monitor using low-cost Raspberry pi and camera hardware to determine ball launch speed, angles and spin

PiTrac - The DIY Golf Launch Monitor

I heard you like badges for your badges, so I made badges for your badges for your badges

Yo Dawg SAO - introducing SAOAO

A fusion of three Hackaday projects controlled by a 6502!

Core64 and Neon Pixels Controlled with 65uino

An affordable oscilloscope for anyone who enjoys soldering their own projects.

Oscilloscope From Pi Pico and Android Phone

Live location of subway trains in Manhattan on a 3D printed map

Manhattan Subway Map

Interesting On Hackaday.io

Discover Wearables

Technologist & Educator.

Pearl Chen

My daughter has a great idea for a simple wearable timer for her workouts. We'll build it together!

Simple Workout Timer

Automated eating tracking and guidance application for research studies

Project Foodpad

design8a

Life-changing circumstances led me to begin having Nightmares in which I would wake up finding my pillow soaking wet, and vivid memories it.

Dream Catcher

Willpower LifeForce

Nobody likes stupid VR. FPV is da shits.

DIY Box Goggles for Cheap FPV

This is a phase frequency detector based using NXP 74aup2g57gm.

NXP Phase Frequency Detector

matt

A smart garment system incorporating an array of integrated sensors to help the user speak the language of movement.

myoSkin

Interacting with objects just looking at them has always been a dream for humans.

Eye of Horus, Open Source Eye Tracking Assistance

The most integrated FPGA module as of 2017

The 'Configum-2' FPGA module

Amit

A temperature and pressure controlled wearable device to help you cope with migraines

Migraine relief helmet

Custom DIY projects in high speed, every Tuesday.

Barb Makes Things

Discover Virtual Reality

Using the interface of Virtual Reality to remotely operate a camera

Camera Automated by Natural Control of E-Reality

Super Mario Augmented Reality

Super Mario Augmented Reality

Anna

360 degree panoramic video on an omnidirectional chasis, controlled in VR.

PanoBot

The Agency for Virtual Reality

A4VR

Muscle electrical stimulator for force feedback in Virtual Reality

NEURODRIVE

Place windows apps to a limitless 3D Virtual space. Use an android based 3D Headset for viewing. Controll it with a 5 button mouse.

VR Prelimutens 3D Desktop

Get in a go-kart... put on a hololens... and play a real-life Mario Kart complete with holographic power-ups that boost your kart's speed!

Real Life Mario Kart

A functional glove that lets you use AND FEEL your hands in VR.

LucidGloves: VR Haptic Gloves on a budget

Save breeding songbirds with VR and AR thermal imaging during hedge-trimming work

Hedge Watcher

My first project，just for fun

Simulate the Gundam cockpit through VR

Augmented Reality Sharky Glass Break

Augmented Reality Sharky Glass Break

Akshay

A person with a remote access wi-fi r/c az-el (azimuth elevation) web-cam attached to a cart. Allows disabled to tour any locale.

PROJECT MAN-CAM : Mobile AzEL Networked Camera

Biofeedback based Virtual Reality system for mental wellness

NeuroCuddl

Discover Robotics

Mechaduino is an affordable, open-source, industrial servo motor. Position, torque, velocity, and custom modes. Arduino compatible.

Mechaduino

Basically you can turn regular fishing line and nichrome wire into a linear actuator that can contract much like a human muscle.

Material Linear-Actuator for Robotics

A fully autonomous Telescope built from scratch

FixStellar - Fully autonomous Telescope

Take an small robotic arm (MeArm) and a dev board with more processing power than necessary (Jetson TX2). What could go possibly go wrong?

Ty the Typing Robot

The intent behind the Ultra Servo is to give a maker or a robotics a powerful building block.

Ultra Servo V2.0

a 12lb/hobbyweight combat robot built around a (set of?) electromagnet(s?)

Stuck!

K3lso is a quadruped robot similar to MIT mini cheetah and MIT Cheetah 3.

K3lso Quadruped

The Redtree Hydra is the 1st computer for robotics designed to easily add components, communicate with groups of other robots and share data

Redtree Hydra: A modular platform for robotics

Scalable swarm robot platform using ESP32 MESH capabilities and custom IR location

Swarmesh NYU Shanghai

Open, flexible, and affordable humanoid robot

Limboid

Twitch Chat plays with Robots

Vivo Mekanika

MotorGo Mini brings joy back to robotics by handling the nitty gritty details for you.

MotorGo Mini

A modular Robotic Surgery platform which is a more accessible and inexpensive tool to researchers, students and doctors.

SurgeyOS Robotics platform

Tiny robot packed with a vast amount of technology.

DIY DOLY

ARPS is a versatile Arduino UNO shield designed for learning or teaching beginner microcontroller programming and robotics.

ARPS – Arduino Robot Project Shield

Read On Hackaday.io

New Pages

The two button mode-set UI

8 min read

Ken Yap

Quick-Turn PCB Suppliers: Evaluation Criteria

5 min read

Ulysses

FET3506J-S SoM: A High-performance Embedded Solution Designed for Global Industrial Applications

4 min read

forlinx embedded

Ultimate Cat Water Fountain Buying Guide

12 min read

torr45838

Smart Home: HVAC status with fan and heat pump

8 min read

WJCarpenter

Another skirmish with the avr-gcc toolchain

13 min read

Ken Yap

Pasadena Supercon Event Report and SAO + mini-SAO hacking

1 min read

Marc MERLIN

Unboxing Quick View: NXP's First MPU FRDM Product-FRDM i.MX93 Dev Board

5 min read

forlinx embedded

Reflexology Massage – Best Home Massage Services With Zen At Home

2 min read

Zen at Home

STRW6053S: Everything You Need to Know

2 min read

lorryluo

From eMMC to NAND: Software Optimization Strategies for Embedded System Storage

7 min read

forlinx embedded

HumanizeAI: Rewrite AI Text Like a Human for More Engaging Content

2 min read

noharoni

MAX232 Signal Conversion Explained: Essential Guide

6 min read

lorryluo

A Step-by-Step Guide to Integrating AX210NGW Wi-Fi 6E With OK3576-C Development Board

10 min read

forlinx embedded

LED bargraph clock?

2 min read

Ken Yap

Curated Lists

From the Raspberry Pi Projects list See More

Combines a Pi Zero 2 W (now a Pi 4), a 7 ins Waveshare 1024 x 600 display and a Gherkin 30% ortholinear keyboard in a portable tablet.

Pickle Pi

A disembodied arm that spells out messages from the ether (as long as they come through Twitter)

Ouija Robot

Raspberry pi based open source device with SDR and easy to use controls for exploring RF signals and data.

SDR dock 1.0

Automatic poetry with Pi decimals, Chudnovsky algorithm and a Raspberry Pi Zero

PiemPi Machine

Highly miniaturized RP2040 12x12mm PCB module

Femto Module v1

Building a Rpi powered cyberdeck in a Toshiba T3100/20

Modernizing a T3100/20

iRobot Roomba 690 enhanced with a Raspberry Pi Zero 2W and IMU.

Roomba RPi

A simple replica of the tesla gun from one of my favorite shows. My first project, hoping to get it light up in different brightness levels.

Warehouse 13 Tesla Gun

Low-cost device for control mosquitoes, weeds, pest etc.

Laser device for neutralizing - mosquitoes

Converting a "Teeny-Tiny Turntable" kit into a working music player using a Raspberry Pi Zero and the power of NFC

Working "Teeny-Tiny Turntable"

Reading up to 9 XIaomi Mi Temperature and humidity sensors using nodeRed+Bash+gatttool

Reading a bunch of BLE sensors with raspberryZero

Active cooling and power breakout board for RPi Zero 2 W

Raspberry Pi Zero 2 W Active Cooling

I am making a full sized Sol-20 reproduction, the first fully assembled microcomputer with a built-in keyboard and television output.

Sol-20 Reproduction

Computer Head Costume with 16x16 LED Matrix, Raspberry Pi, and Espeak

Computer Head Costume

A 3 axis skull mimics the movements of a person wearing a baseball-cap mounted Inertial Measurement Unit and wireless communications

Yorick the Mimic

From the Awesome Projects on Tindie list See More

Modular open hardware robot for uROS2 & Microblocks

Rosmo robot

Instead of a $10 box from Amazon, go above and beyond

TOSLINK DAC

Create a series of boards designed for the RC2014 bus to achieve MSX/MSX2 compatiblity

MSX COMPATIBLE BOARDS FOR RC2014

Very simple remote switch, controllable by any infrared remote control

IR2IO

Mokki is portable retro game console. Games are compiled in the cloud, stored on your phone, sent to device via bluetooth.

Mokki: Much Retro Game Console

For IT geeks, retro game fans, makers. Open source, portable, modular to explore, create, learn, code & play

ESPboy - RetroGaming&Software development MuliTool

Portable Power Platform for Pi Zero

PiSugar Battery for Raspberry Pi zero

Expansion Module BACnet MSTP, 8DI 8DO

BACnet MSTP, 8DI 8DO

A USB-C PD Sink up to 20V 5A based on the Cypress CYPD3177 USB PD Controller

USB-C Power Delivery Sink - CYPD3177

The controller LED strips of from 30 to 240 diodes.

Musical LEDs

A Feather-wing in the shape of snowflake shines in colourful animations with 19 independently-controlled RGB LEDs.

ColourSnow

A 6.4A-2uA current/voltage/power monitor based on the TI INA209 with dedicated GND usable as Shield, Wing, Breakout or Breadboard.

Watt-A-Live INA209 Power Monitor Shield Wing

A 65c816-based MiniITX motherboard.

Neon816

A quiet El Wire inverter with USB plug for easy use.

Quiet EL Wire Inverter

A breakout board for Analog Devices' 8x12 analog cross-point switch

ADG2128 Breakout

From the Featured Projects list See More

Mini Infinity Mirror SAO

SAO Infinity Mirror

The Skull of Fate SAO is an interactive tarot RFID card featuring i2c host and i2c client capabilities and GPIO interface with the badge.

Skull of Fate SAO

SAO that adds Lora Communication

SAO Lora Walkie Talkie

Canned messages, blinking lights, I2C capable....

SAOGNR - An SAO for Morse Code

No code, no PCB, just a Shitty Add-On for Supercon living in the moment

NixieSAO

A nixie clock that is designed in old fashioned way

Nixie Clock On Binary Counters

An 8-bit solar powered gadget.

Tiny Bit Machine

Salsa ONE is a single-button game console, inspired by the Arduboy and and the ergonomic design of the SanDisk Sansa music player

Salsa ONE: Minimalist Game Console

Underwater sample collection prototype developed as part of a University of Washington study abroad program to QUT in Brisbane, Australia.

Subzero UROV Flora Fauna Collection Attatchment

A way for the RSV Nuyina Hull to be inspected through the collection of biosecurity risk via the BlueROV2.

Ice Breaker Hull Inspection Collection

This is how to make a large display using ARGB computer fans as the method of having pixels for the screen.

SignalRGB Fan Wall

A pair of Pomelo gamma spectroscopy modules are run in coincidence mode to detect and measure cosmic muons

Cosmic muons: angular dependence of flux

How many features can you squeeze into a cheap bizcard? Quite a lot.

Self-Replicating USBHID-WS2812-RF24 Bizcard

Versatile and customizable business card and badge holder. Starting from a 0.8 mm RFID business card up to full featured badge holder.

'Swiss Army Knife' RFID LED Business Card

A logic chip noise synth workshop featuring the Klangorium

The Sound of Logic: Klangorium