Green Powered Challenge | Hackaday.io

64 projects

Work = Geometric Asymmetry × Magnetic Flux Density replacing the brute force Energy = Current×Voltage

PMM PMG COMBO

alan-cyr Alan Cyr

An intelligent pet feeder that dispenses food on a timer, detects your pet’s presence, and signals the end of the meal – all with an ESP32.

ACEBOTT Smart Home: Automatic Pet Feeder

aula-jazmati Aula Jazmati

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

Solar houseplant watering monitor

Pipe leak detection using external color coded coatings that dissolve on leakage producing colored water to identify the leaking location.

ColorTrace Pipeline Leak Identification System

anteneh-gashaw Anteneh Gashaw

Gravity generator

Hourglass Generator

alan-cyr Alan Cyr

Stores solar energy in supercaps to deliver 24V bursts—even after days without sunlight.

Supercapacitor Solar IoT for High-Power Actuation

Supplyframe DesignLab: 2023 Hackada…

Sustainable* electricity you make yourself! *for as long as you're willing to sustain.

Practical Power Cycling

alnwlsn alnwlsn

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

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

NFC_temp - passive NFC thermometer

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

Thermoelectric Power Harvesting Demo

This is a power plant design Boyscout logic and high school math (Particles removed desalination available R O ready water is end product)

Tidal Pulse Tower

alan-cyr Alan Cyr

Ultra low powered feather form-factor development board based on the SAML21 microcontroller

Ultra Low Power Feather Development Board

A super simple solar motor anyone can build in minutes.

A Contemporary Radiometer

andrea-console Andrea Console

DIY extremly low current pulse motor from old relays

Microwatt Pulse Motor

mircemk mircemk

Skoog Tablets: Seawater to protein in 72h. Off-grid. Three tablets purify, grow, and secure food via the sun. Open source for acute hunger.

Skoog Tablets —Emergency Proteins for the Starving

Great cells, not so great circuitry...

Elecaenta 25W: Solar Panel Upgrade

toster92 t.oster92

Cryptocurrency micro-miner that fits in your pocket. Just open to the sun and start mining. Some crypto is better than no crypto!

Pocket Crypto Miner (Solar)

andrew-sheppard Andrew Sheppard

My idea is to build a small solar panel using 24 power transistors in a TO3 package. To do this, I'll uncover the transistors.

SOLAR BJT PHONE CHARGER

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

Gravity Fall

valeriamayara22

solar-powered tiny homeserver

solar pi

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

Harvesting, storing and using free-energy using high-voltage vacuum capacitors.

Using a Capacitor to Harvest or Generate Energy?

A lightsaber inspired necklace and a more bejeweled alternative

Solar Powered Necklaces

colin-catlin Colin Catlin

low-cost e-ink typewriter

etyper