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29.6k 380 33 199
A tiny processor board the size of a 16 pin DIP with Bluetooth Low Energy
Project Owner Contributor

OSHChip V1.0

Philip

8.6k 88 15 86
Tiny Wireless IMUs - 100% open & autonomous 9DoF motion sensor using BLE to control anything from your [objects] motion !
Project Owner Contributor

Twiz

Drix

4.7k 293 19 83
Displaying the time on 8x8 pixels.
Project Owner Contributor

Micro Word Clock

Daniel Rojas

8.9k 59 31 80
A small ATtiny85 board playing the Nyan Cat tune.
Project Owner Contributor

Nyan Board

Radomir Dopieralski

14.2k 131 20 74
itsy-bitsy teeny-weeny fully autonomous quadcopter
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quadcopter in one inch

jeff

11.7k 299 8 62
A complete Arduino environment in a DIL-8 form factor based on the DigiSpark Hardware
Project Owner Contributor

DIL-Duino

Daniel Grießhaber

11.2k 113 6 59
Based on the stm32f4 cortex-m4 mcu, 1.44" TFT LCD , HC-05 and Android App.
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Open Source Smart Watch

Montassar

11.9k 398 18 49
Small audio interface for adding a digital channel to an analog mixer.
Project Owner Contributor

Square Inch USB Sound Card

Jacob Creedon

4.9k 88 22 49
PowerBlade is the smallest, lowest cost, true-power plug-load power meter, and communicates to smartphones over BLE
Project Owner Contributor

PowerBlade

Sam DeBruin

10.2k 81 12 49
Measure tire or ball pressure with your smartphone
5.1k 477 11 47
Keychain USB multiple password manager/generator/injector
Project Owner Contributor

Key Pass

danjovic

4.9k 40 18 45
This device is supposed to fit on a breadboard and show measured voltage. It supports autoranging (sort of...) and shows voltage polarity.
Project Owner Contributor

Small voltmeter

Klima

4.1k 48 27 44
Remake of the TIL311 hex LED display with recent technology.
Project Owner Contributor

PICTIL

al1

7.4k 56 52 43
Sixteen different LED colors on a teeny tiny board.
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blinktronicator

zakqwy

15k 68 17 41
Not as bulky as the nucleo boards, after all.
Project Owner Contributor

STM32F030F4P6 breakout board

Christoph

5.3k 1.5k 8 39
I love to program programmers. Yo dawg...
4.4k 32 16 37
Pseudo Random VGA blinking lights generator
Project Owner Contributor

VGA Blinking Lights

danjovic

8.7k 84 14 36
The smallest wireless IMU - Dime sized, ARM Cortex M0+ with 9-DoF IMU, temperature and altimeter. Supports ZigBee and Mesh networking.
Project Owner Contributor

FemtoBeacon

femtoduino

5.3k 805 8 34
This project is aMicroUSB powered ESP8266 Oled Display. It can be used to display Weather Information or Wifi SSID Information.
Project Owner Contributor

MicroUSB powered ESP8266 Oled Board

0miker0

11.3k 354 3 33
A replacement controller for Lavet stepper clock movements
Project Owner Contributor

Crazy Clock

Nick Sayer

4.5k 37 10 31
Volt- and ohmmeter plus calculator on 25x25mm PCB
Project Owner Contributor

Micro progmeter

jaromir.sukuba

2.8k 464 18 30
small seven segment display for plugging on an ISP programming header of an Atmel Board or an Arduino
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tiny7

al1

1.1k 141 3 26
Play retro color 8 bit games on your TV from an Arduino.
Project Owner Contributor

Arduinocade

rossumur

1.1k 31 6 26
Ultra small Fully autonomy capable UAV autopilot
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Lisa/S Autopilot

Piotr Esden-Tempski

4.3k 1.1k 16 21
Customisable USB adapter for arcade controls.
Project Owner Contributor

AVeRCADE

danjovic

2.2k 22 4 19
Miniature dev board for SAM21D / SAM20D ARM cortex M0+
Project Owner Contributor

mini SAM

al1

5.4k 35 13 19
Converts 0 - 30 MHz up to 50 - 80 MHz. Allows HF(shortwave) reception on RTL-SDRs and the like. A square inch project entry
2k 30 9 18
An MPPT solar boost converter with 3.3v Output and Supercap energy storage.
Project Owner Contributor

1 Square Inch of Power

OzQube

2.3k 26 3 18
A Powermeter for USB Devices / Gadgets
Project Owner Contributor

USB Power Meter

Daniel Grießhaber

895 9 4 18
Adapter for playing Atari 2600 with Wii Nunchuck, with or without the accelerometers
Project Owner Contributor

AT26-Chuck

danjovic

3.2k 679 11 17
A compact solution for your closed loop positioning requirements
2.7k 489 4 16
A very small HiFi audio CODEC module
Project Owner Contributor

HiFi audio codec module

Michele Perla

1.8k 27 9 15
An extremely simple, dependable continuity tester
6.5k 468 19 15
A tiny low cost Bluetooth Low Energy board for miniature and wearable projects.
Project Owner Contributor

Tiny Low Cost BLE

JamesCannan

852 15 4 15
Breadboard-compatible USB PIC16F1455 board
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USBreadboardIT

WallaceIT

1.7k 21 3 14
Entry for SquareInch competition: TOTP token
Project Owner Contributor

T(iny)OTP

Gus Logan

3k 26 8 14
There are more bats around than you think!
Project Owner Contributor

World's Smallest Bat Detector

spambake

1.5k 19 4 13
Very tiny Arduino compatible board
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Pointduino Mini

Furkan Çetin

584 596 17 13
OSHW Logic gate into breakout boards for easy prototyping.
Project Owner Contributor

Logic Block

JRodrigo

2.3k 234 10 13
Super tiny, Micro clock using a Numitron as its display. Running off a 400mAh lipo battery.
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Micro NumiTron clock

Jeremy g.

1.3k 385 9 12
Neopixels are sweet! ☺ Driving them is a pain ☹ Stick in a picopixel and put the flashy on all the things!
Project Owner Contributor

picopixel

usedbytes

827 13 2 12
Can be used as small CPLD development kit, or USB Interface: JTAG, UART, SPI, etc...
Project Owner Contributor

XMOD USB CPLD Kit or Interface

Antti Lukats

546 7 12 12
This is a Charlieplex LED Xmas tree build with logic gates. No microcontrollers needed.
Project Owner Contributor

Charleplex Xmas Tree without uC

K.C. Lee

836 186 2 12
I wanted to make a small, practical wristwatch that could be enclosed in a "fashionable" enclosure.
Project Owner Contributor

LED Wristwatch

Will

538 8 15 11
A 1" round wearable with 8 LEDs
Project Owner Contributor

Tiny Blinky

Nick Sayer

1k 11 4 10
A custom CC430F5137 development board with selectable operational frequency between ISM 868 MHz and 915 MHz.
Project Owner Contributor

Tiny CC430 Development Board

rampadc

835 188 12 10
LED Fireflies that pulse at dusk
Project Owner Contributor

LED Fireflies

David

1.1k 16 5 10
Tiny quadruped based on ESP8266
Project Owner Contributor

µKatka

Radomir Dopieralski

661 13 2 9
This is a capacitive touch wheel could be used as a simple motion/swipe input to your microcontroller.
Project Owner Contributor

Capacitive touch wheel

bram

1.2k 13 4 9
Clone of the blink(1) indicator light with ATTiny85 and V-USB
Project Owner Contributor

blink(inch)

spro

690 30 4 9
A simple electronic compass intended to be small, low power, and relatively low cost for everyday carry.
Project Owner Contributor

Simple Electronic Compass

Luc

2.3k 536 7 7
This is yet another STM32F030F4 breakout board. There are footprints for nRF24L01+ module, MicroSD.
Project Owner Contributor

STM32F030F4 IoT Breakout board

K.C. Lee

453 5 4 7
DIPSY StarterKit a 1x1 Inch board!
Project Owner Contributor

DIPSY-STARTER

Antti Lukats

1.2k 11 6 6
A small robot for the 1 inch square competition. It will at least have 2 motors a sensor, hopefully more than 1.
Project Owner Contributor

1 Inch Rover

HappyFox

376 9 10 6
This is a miniature selfcontained webserver, using a PIC18F67J60, and has 16Mbit webpage storage.
Project Owner Contributor

MicroEthernet

FrazzledBadger

418 124 4 6
DIY toaster reflow oven controller with web interface. It's useful... I promise!
Project Owner Contributor

MostToast

Patrick Lloyd

341 7 2 5
Human Infected Zombie - A one square inch multiplayer game with IR communications
Project Owner Contributor

HIZ

matseng

937 492 7 5
Program your AVR over WiFi using the standard ISP header already on your board!
Project Owner Contributor

ESPecially Easy AVR Programming

jarek319

1.2k 8 2 5
Breathing LED lamp for Motorcycle using ATtiny
Project Owner Contributor

p.u.l.s.e v1

Anool Mahidharia

574 6 21 4
A far-stretch for the 1sq-in contest!
482 13 2 4
XBee compatible board using NRF24L01
Project Owner Contributor

NRFBee

Furkan Çetin

749 353 10 4
Solar powered audio only variometer using MSP430 and MS5611
Project Owner Contributor

Sunny Vario

Alex

267 4 3 3
Pomodoro is a time management technique where you spilt your task into smaller ~20 Minute sections. This device helps you to keep focused
Project Owner Contributor

Pomodorino

Daniel Grießhaber

558 4 2 3
Finally got it off of my breadboard.
Project Owner Contributor

I2C Temp Sensor Board

mcu_nerd

413 442 4 3
An open source tiny controller for tiny robots
Project Owner Contributor

nanoARC

adamcatley

603 3 2 3
Portable headphone amplifier with built in LiPo battery charger.
436 5 2 3
A basic breakout board that converts an ESP-12E module into an XBee footprint.
Project Owner Contributor

ESP-12E Breakout Board

Daniel Eisterhold

177 462 4 3
A very small microcontrolled RGB led circuit.
Project Owner Contributor

Wedding LED doodads

FrazzledBadger

225 123 5 2
A very tiny all-in-one robot board. Designed for OneSquareInch.
Project Owner Contributor

Neurobot board

Andy

359 481 2 1
nGoline One Square Inch ESP8266 Relay powered by mains
Project Owner Contributor

NOSIER

nGoline

394 3 2 1
DSPIC33 square inch dev board.
Project Owner Contributor

DSPIC33 SQI

sutfuf

67 2 2 0
small version of the nsl annalogic 8 logic lines.
Project Owner Contributor

nsl annalogic

charliex

120 2 2 0
EKG on a square inch board.
Project Owner Contributor

Square inch EKG

Jeff Stubler