Green Powered Challenge | Hackaday.io

65 projects

The World's Smallest Omni Wheels - Diameter: 0.45 in - 11.5 mm

Vinci Micro Omni Wheels

vinci-innova Vinci Innova

I built a Hybrid Delta Robot using Arduino & Servo motors. Delta robots are widely used in factories for high-speed pick and place operation

DIY Industrial Pick-And-Place Robot | Delta Robot

robotics-everyday Robotics Everyday

An analog circuit made from scrap parts that manages a solar panel, lithium battery, and LEDs to create eco-friendly fairy lights.

Fairy Lights from Scraps

andrea-console Andrea Console

a sleek, solar-powered charger that keeps your devices energized wherever you roam

SolMate

arnov-sharma Arnov Sharma

A speed breaker used as a plastic bottle crasher that uses weight of the passing car instead of powered motor or compressor to crush bottles

Plastic bottle crashing speed breaker

anteneh-gashaw Anteneh Gashaw

I built an RGB thermometer with its own web interface that can control home appliances based on temperature changes

Programmable RGB Thermometer

The 2018 Hackaday Prize

A Battery that does not need for charging. Activated with water or any liquid.

Water Activated Battery

wasim-sahu Wasim Sahu

A redesigned solar-powered houseplant moisture sensor that runs indefinitely at 1.2µA average current

Solar houseplant watering monitor

My watch runs off "disposable" lithium cells. I retrofit it to run like a grandfather clock: weights and gravity.

Gravity-Powered Digital Clock

The ELM11 is a Lua-programmable microcontroller board.

ELM11

BrisbaneSilicon

A simple circuit that can work as a crystal radio (no power needed) or as a regenerative receiver for the FM broadcast band

When a crystal radio meets a regen receiver

andrea-console Andrea Console

TRIPLE-DRIVE PMM/PMG COMBO 2026

TRIPLE-DRIVE PMM/PMG COMBO

alan-cyr Alan Cyr

Featuring contactless power, and a cooling fan!

Wireless volumetric display

Weight activated toilet cover opens when stepped on and closes when leaving improving hygiene and odor control with no electricity.

Weight Activated Automatic Squat Toilet Cover

anteneh-gashaw Anteneh Gashaw

The 2018 Hackaday Prize

SOL is a project to develop a solar powered, connected solar intensity sensor (also known as a pyranometer)

SOL: Long-term solar intensity sensing

PowerPD, a compact ESP32-based programmable power supply that turns a USB-C PD charger into a small bench supply.

PowerPD — ESP32 USB-C PD/PPS Bench Power Supply

raushan-kumar Raushan Kumar

A chain-driven gravitational energy storage system that generates 13W at 58% efficiency, designed in FreeCAD and fully open source.

Gravity Fall

valeriamayara22

Reading temperature accurately while siphoning power from the NFC field in a keychain compatible form factor

NFC_temp - passive NFC thermometer

A lightsaber inspired necklace and a more bejeweled alternative

Solar Powered Necklaces

colin-catlin Colin Catlin

Circuit sculpture: a table-top satellite model that shines and measures light (and is environmentally friendly).

A little CSK satellite for a bright workstation

andrea-console Andrea Console

Harvesting power from a low cost Peltier heater, run in reverse, to power an embedded electronics demo board

Thermoelectric Power Harvesting Demo

powerTimer acts as a high-efficiency gatekeeper for your electronics. By reducing idle consumption to a few nanoamperes, it extends the life

powerTimer: Forget Charging. Sleep in Nanoamperes.

juan-flores Juan Flores

Supplyframe DesignLab: 2023 Hackada…

Open-Source, Environmentally Friendly Mouth Mouse with Sip/Puff Switch

IRAZU

olman-orozco Olman Orozco

Open-source material tech using ionic triggers to aggregate microplastics at the source, preventing bioavailability in marine ecosystems.

Skoog Flocculant-Proactive Microplastic Solution