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Coin Cell Challenge Entries

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99 projects
1.7k
23
26
Handmade retro taking calculator with QDSP6064 bubble display
Project Owner Contributor

Retro taking calculator with Bubble display

bobriciusbobricius

284
1
1
1 Bite 4 results using sin in a coin
Project Owner Contributor

Volumetric parametre

Galasso David LeonardoGalasso David Leonardo

434
13
11
Reversing Engineering
Project Owner Contributor

Coin Cell Challenge (1) Shower Battery Charger

Vije MillerVije Miller

241
2
2
A wireless node to detect door opening.
Project Owner Contributor

WIRELESS_DOOR_SENSOR

texanetexane

4.6k
62
75
Ever since I have my own company I wanted to have a PCB business card. What not add an OLED display to it?
Project Owner Contributor

Electrocard

Michael TeeuwMichael Teeuw

64
0
0
My twist on the classic LED Dice kit. Yes, I resort to cheating to beat the kids!
Project Owner Contributor

Cheater Dice

NASCONASCO

2.6k
60
55
whowhow. whowhow. - formally known as purple rider
Project Owner Contributor

K.I.T.T. - KNIGHT RIDER badge/brooch

davedarkodavedarko

9.4k
87
86
badgy is a rechargeable coin cell powered ePaper display with WiFi connectivity
Project Owner Contributor

badgy

w4ilunw4ilun

207
70
1
A BCD binary clock that fits inside of a jar
Project Owner Contributor

Binary desk USB jar clock

Marius TaciucMarius Taciuc

8.6k
111
104
A handheld game console programmable with (Micro/Circuit)Python.
Project Owner Contributor

µGame

ðeshipuðeshipu

3.3k
43
41
A credit card size Wireless Temperature & Humidity Node power by CR2032 Coin Cell
Project Owner Contributor

Wireless Temperature & Humidity Card

Will WhangWill Whang

16.4k
180
139
Multi-year always-on LED replacements for gaseous tritium light sources
Project Owner Contributor

TritiLED

Ted YapoTed Yapo

1k
10
9
TESTERA is the exclusive handy tool that allows you to test components like LED, Capacitor, Transistors, IR LED, LDR, etc.
Project Owner Contributor

TESTERA: New ERA of testing

Patel DarshilPatel Darshil

1k
5
15
The Blinking Coin Cell Christmas Tree runs entirely off the power of a coin cell with a bit of a gravity assist.
Project Owner Contributor

Gravity Assisted Blinking Coin Cell Christmas Tree

Frank MilburnFrank Milburn

570
2
0
Allows you to convert a binary code into a ternary, and also a trinary code to convert to binary.
Project Owner Contributor

Decoder of the ternary system

TernarySystemTernarySystem

238
1
0
A clock with spiritual messages
Project Owner Contributor

Cronos

Marius TaciucMarius Taciuc

12k
618
81
wearable UV Index & weather sensor
Project Owner Contributor

UV-badge

x-labzx-labz

242
88
2
.........Security hacker....... Ethical hacking how to secure my computer
Project Owner Contributor

Computer Hacking

ahmednaseruddinmoizahmednaseruddinmoiz

50
0
1
Really simple light-up pop up card, using 2 LEDs, copper tape and a CR2032 coincell battery.
Project Owner Contributor

Quick LED Birthday Card

AmandarAmandar

189
1
1
MAX32625PICO can be operated by a coin cell battery, opening up a variety of applications.
Project Owner Contributor

Coin Cell Operated Pico Board

Naing Ye AungNaing Ye Aung

2.9k
32
30
A low cost ultra-low-power small-sized high accuracy temperature logger for use in scientific research.
Project Owner Contributor

Low-cost/power/size temperature logger

NikosNikos

144
1
3
Animate the famous SuperMario's mushroom
Project Owner Contributor

Mushroom on wheels

PixJuanPixJuan

107
2
3
Busy Bee playing music
Project Owner Contributor

BBsynth

JacquesJacques

4.4k
32
28
Wait overnight and do your welding job!
Project Owner Contributor

Coin cell battery powered spot welder

jaromir.sukubajaromir.sukuba

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