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71 projects
208
1
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Make a low-cost, low-power light show responsive to specific musical notes present in ambient sound.
Project Owner Contributor

Musical note-detecting light display

mattMatt

12.8k
412
65
Using an ePaper Display, investigate getting the lowest possible current usage from an STM32L0.
Project Owner Contributor

Coin Cell Powered Temperature/Humidity Display

kevin-kesslerKevin Kessler

805
585
8
A little coin cell powered raccoon with capacitive sensing to light up its eyes
Project Owner Contributor

Light Up Raccoons

savoSavo

21.1k
140
104
More sensitive to gamma radiation than a Geiger counter with the added bonus of telling exactly what's inside your samples!
Project Owner Contributor

All-In-One Gamma-Ray Spectrometer

nuclearphoenixNuclearPhoenix

3.5k
20
20
This ultra-low power sensor is used to monitor temperature. Long-range wireless using a CR2032 battery.
Project Owner Contributor

Long-Range Thermocouple Temp Sensor

discreet-mayorDiscreet Mayor

70
0
0
A coin cell / photo cell powered Bluetooth enabled soil sensor
Project Owner Contributor

Purple Daisy Coin-Cell Powered Soil Sensor

sai-yamanoorSai Yamanoor

3k
18
19
This automatic chicken coop door will help to keep your chickens safe
Project Owner Contributor

Kokot: a low energy chicken coop door

jp-gleyzesJP Gleyzes

205
3
3
A member based fully crowd funded and even corporate sponsor (s) but a democraticlly focused proposal based Grassroots Hacker Space Program
Project Owner Contributor

Hackaday In Space

neohackerjdneohackerjd

4.9k
95
66
Ultra low power monitoring of temperature, humidity, pressure, reed contacts and motion. With Encryption!
Project Owner Contributor

Canique Ambience

caniquecanique

5.1k
59
49
Step-by-Step guide on how Lithium Battery charger circuit works and full assitance for DIY protect charger through USB port.
Project Owner Contributor

DIY Protected Lithium Battery Charger (TP4056)

diy-guy-chrisDIY GUY Chris

4.5k
42
43
A fully custom Arduino E-Paper BLE clock in a 3D Printed case using nRF52832 with one year run time one a single 18650
Project Owner Contributor

Triink - low power BLE E-Paper Clock

aaron-christophelAaron Christophel

576
4
7
Canique Switch has a 60W latching relay onboard. The board consumes only 35nA when not switching.
Project Owner Contributor

Canique Switch - nano power relay board

caniquecanique

289
3
3
A Module that fits in a typical Wallswitch with Air Quality, EarthQuake Detection and Ultra Low Power Sleep Mode + an Touch EInk Display
Project Owner Contributor

AirQ&EarthQ-LoRa EInk WallSwitch

ulrichUlrich

940
12
17
Put a bit of colorful randomness on your clothes !
Project Owner Contributor

Dice badge

pierre-loup-mPierre-Loup M.

82
2
1
Is it possible to + physically apply Newton's third law of motion as a dynamic cycle system in a motor device in a positive way.
Project Owner Contributor

It Can Apply the Newton III Law on an EngineSystem

carlos-barreraCarlos Barrera

4.5k
23
23
WiFi/BLE-enabled low power e-paper display devboard
Project Owner Contributor

Paper WiFi

albertas-micknasAlbertas Mickėnas

1.4k
14
13
An attempt at building a stylish, low-power calendar, thanks to the ESP32 and an e-paper display that (for now) resembles a framed picture
Project Owner Contributor

Low-Power E-Paper Calendar

johnJohn

1.5k
2
7
The idea for this project is to repurpose an analog wall clock to display the date instead of the time.
Project Owner Contributor

Calendar Clock 50 Years Battery Life 1 AA Alkaline

josh-joyJosh Joy

3.4k
206
28
Small battery-powered data logger that runs on 3.2 µA when measuring at a 1 minute interval
Project Owner Contributor

Low-power environmental data logger

martin2250martin2250

114
1
0
This project will post a status change to MQTT through a Thread network when pressed. Will work for roughly 7 years on a CR2032 cell.
Project Owner Contributor

MQTT Thread Button - Rev2

francois-gervaisFrancois Gervais

915
968
10
A scale model of the Italian COSMO-SkyMed satellite brought to life with the addition of a small flashing light.
Project Owner Contributor

Flashing satellite model

andrea-consoleAndrea Console

2k
13
10
Schematic diagram, source code, PCB, related component data sheets and suppliers, and optical part information
Project Owner Contributor

laser range finder

35863947183586394718

3.2k
25
32
Explorer is a small solar powered art piece with a dynamically scaled frame rate to conserve energy during those dark winter days
Project Owner Contributor

Explorer

jelle-reithJelle Reith

193
4
3
Detect leaks for over 10 years on a coin cell.
Project Owner Contributor

Leak Detector - Rev3

francois-gervaisFrancois Gervais

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