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97 projects
10.3k
34
38
A pranking device to annoy your friends... or perhaps an entire college campus.
Project Owner Contributor

ATTiny Low Power Prank

joseph-primmerJoseph Primmer

9.3k
57
55
A small, cheap ($2 BOM), open source charger for LIR2032 and 20mm rechargeable coin cells built from an MCP73831.
Project Owner Contributor

LIR2032 Coin Cell Charger

jon-thomassonJon Thomasson

3.7k
26
37
Display falling tetris blocks on a oled screen made into an ear ring. It's powerded by a coin cell.
Project Owner Contributor

oled earrings

danielDaniel

1.6k
994
19
7x5 LED Matrix display with 3 parts
Project Owner Contributor

Piggyback LED

morecatlabmorecat_lab

571
4
7
Coin cell powered 555 timer with ultraviolet LED coated with glow in the dark paint to mimic a firefly.
Project Owner Contributor

Fireflies

jux-crowJux Crow

4.1k
13
27
An Arduino powered birthday reminder device that'll wish you happy birthday for 50 years on a single CR2450 coin cell.
Project Owner Contributor

Birthday Alarm That'll Run for 50 Years!

vishnu-mohananVishnu Mohanan

2k
21
24
A posable micro-spawn of NoodleFeet that beeps and judges you <3
Project Owner Contributor

Noodle Spawnling

sarah-petkusSarah Petkus

2.9k
18
28
An annoying, tiny, rickrolling friend
Project Owner Contributor

ATtiny10 rickroller

shlonkinshlonkin

928
10
7
CR2032 Coin Cell LCD Projector. Digispark Attiny85 module, LCD panel harvested from ebay mp3 player.
Project Owner Contributor

Coin Cell LCD Projector

challengingstage888ChallengingStage888

4
4
Coin Battery Powered Open Fridge Alarm.
Project Owner Contributor

Open Fridge Alarm

mariusznowakengmariusz_nowak_eng

225
2
3
Busy Bee playing music
Project Owner Contributor

BBsynth

jacquesJacques

1.4k
12
16
why stick to CR2032 when you can have a CR200320!! Powering your Anet A8 3D printer with a coincell
Project Owner Contributor

MegaCoinCell

megacellmegaCell

6.3k
41
46
Just a simple compact tetris clone using an ATTINY85 and a cheap OLED display.
Project Owner Contributor

pockeTETRIS

dombeefdombeef

311
3
3
A wireless node to detect door opening.
Project Owner Contributor

WIRELESS_DOOR_SENSOR

texanetexane

250
4
4
I'll be sharing with you my experience of how i started from a simple idea to a finished product
Project Owner Contributor

VibClock

foxmjayFoxmjay

7.1k
4.3k
57
A charlieplexed 20 LED blinker with ATTiny45. Space efficient daisychained LED placing with shared anode/cathode soldering pads.
Project Owner Contributor

LED ring

jens-haukeJens Hauke

984
18
28
Collection of blink SMD soldering kits
Project Owner Contributor

Blink Coin cell toys collection

bobriciusbobricius

408
1
6
Animate the famous SuperMario's mushroom
Project Owner Contributor

Mushroom on wheels

pixjuanPixJuan

9.4k
99
84
A little UHF transmitter can be located with a directional antenna.
Project Owner Contributor

Tiny Low-Tech tracking transmitter

tomTom

2.1k
16
13
Small battery for your ESP8266 devices.
Project Owner Contributor

Coin Battery Shield for D1 Mini

dehipudeʃhipu

4.3k
51
47
A credit card size Wireless Temperature & Humidity Node power by CR2032 Coin Cell
Project Owner Contributor

Wireless Temperature & Humidity Card

will-whangWill Whang

9.8k
119
116
A Wordwatch using a 11x10 charlieplex matrix.
Project Owner Contributor

Word Wristwatch

cfCF

1.4k
6
7
This is a 3d printed mini led lamp ran on a 3v coin battery.
Project Owner Contributor

3v coin powered Articulated Mini Lamp

odddavisOddDavis

779
791
24
.........Security hacker....... Ethical hacking how to secure my computer
Project Owner Contributor

Computer Hacking

ahmednaseruddinmoizahmednaseruddinmoiz

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