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Coin Cell Challenge Entries

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97 projects
27.8k
92
116
If you like happy, easy to build projects, this is not for you. This project is only for people who like to be miserable and frustrated.
Project Owner Contributor

An Unfortunate SMD Project

makersboxMakersBox

1.3k
15
13
A drink coaster which changes color based on a cups temperature
Project Owner Contributor

Thermal Coaster

ray-olsenRay Olsen

221
2
3
Busy Bee playing music
Project Owner Contributor

BBsynth

jacquesJacques

2k
20
22
A posable micro-spawn of NoodleFeet that beeps and judges you <3
Project Owner Contributor

Noodle Spawnling

sarah-petkusSarah Petkus

647
8
7
This tiny low-power wireless module can run on a coin battery for a looong time.
Project Owner Contributor

Cloony wireless module

martin-hubMartin Hub

1.1k
4
6
How many screws can you drive with a CR2477?
Project Owner Contributor

Coin Cell Power Screwdriver

ted-yapoTed Yapo

7.8k
40
35
A small railgun , augmented with neodymium magnets and powered from a single LIR2032 rechargeable coin cell battery.
Project Owner Contributor

Coin cell powered railgun

consciousfleshconsciousflesh

412
383
1
A keychain sized gamer based on the attiny85 and a single coin cell battery.
Project Owner Contributor

TinyPong

saulSaul

13.6k
25
15
This project describes the use of a coin cell for powering the Esp8266 by building a remote control for Phillips Hue Lights
Project Owner Contributor

Solved: Esp8266 powered by coin cell

gelstronicGelstronic

6.8k
28
38
A persistence of vision (POV) display with five 0805 LEDs piggy back on an ATTiny13.
Project Owner Contributor

Tiny POV

jens-haukeJens Hauke

10.1k
33
37
A pranking device to annoy your friends... or perhaps an entire college campus.
Project Owner Contributor

ATTiny Low Power Prank

joseph-primmerJoseph Primmer

384
1
6
Animate the famous SuperMario's mushroom
Project Owner Contributor

Mushroom on wheels

pixjuanPixJuan

490
4
4
Coin Battery Powered Open Fridge Alarm.
Project Owner Contributor

Open Fridge Alarm

mariusznowakengmariusz_nowak_eng

315
6
12
Here I have a Maker Gummi Bear that can be worn as an electronic badge. It contains LEDs and is powered by a single coin cell battery.
Project Owner Contributor

Maker Gummi Bear

rachelRachel

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

6.4k
21
29
A clone of National Semiconductor's LM3909 IC using discrete components on a PCB.
Project Owner Contributor

Disintegrated LM3909 - 1.5V LED Flasher

dillon-nicholsDillon Nichols

50.9k
187
111
This project using an ESP8266 to find the password of a WiFi access-point with PBC enabled.
Project Owner Contributor

WiFi cracker ESP8266(PBC)

sagar-naikSagar Naik

8k
96
114
An Arduino-based watch using 97 LEDs to show the time.
Project Owner Contributor

LiquidWatch

cfCF

10.3k
59
55
If you have a lot of time, you can decide your position on Earth just using watches and eyes. Or RTC and LDR.
Project Owner Contributor

Light level geolocator

jaromirsukubajaromir.sukuba

6.6k
79
63
Low Power Temperature/Humidity Monitoring
Project Owner Contributor

Gecko Node - Wireless Low Power Sensor

maxkMax.K

7.5k
93
107
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

8.2k
47
41
Wait overnight and do your welding job!
Project Owner Contributor

Coin cell battery powered spot welder

jaromirsukubajaromir.sukuba

1.1k
6
10
A small quiz game that reads questions from web and shows them on a small oled dispay, using a 3.6V battery, an ESP8266-01 and two buttons
Project Owner Contributor

ESP8266 Oled Mini Quiz

giulio-ponsGiulio Pons

773
768
23
.........Security hacker....... Ethical hacking how to secure my computer
Project Owner Contributor

Computer Hacking

ahmednaseruddinmoizahmednaseruddinmoiz

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