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32.6k
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398
comment
33
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218
A tiny processor board the size of a 16 pin DIP with Bluetooth Low Energy
Project Owner Contributor

OSHChip V1.0

Philip

eye
10.6k
users
69
comment
32
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103
A small ATtiny85 board playing the Nyan Cat tune.
Project Owner Contributor

Nyan Board

Radomir Dopieralski

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5.1k
users
350
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19
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91
Displaying the time on 8x8 pixels.
Project Owner Contributor

Micro Word Clock

Daniel Rojas

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8.9k
users
90
comment
15
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88
Tiny Wireless IMUs - 100% open & autonomous 9DoF motion sensor using BLE to control anything from your [objects] motion !
Project Owner Contributor

Twiz

Drix

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15.5k
users
146
comment
20
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79
itsy-bitsy teeny-weeny fully autonomous quadcopter
Project Owner Contributor

quadcopter in one inch

jeff

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12.7k
users
125
comment
6
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68
Based on the stm32f4 cortex-m4 mcu, 1.44" TFT LCD , HC-05 and Android App.
Project Owner Contributor

Open Source Smart Watch

Montassar

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12.6k
users
306
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8
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67
A complete Arduino environment in a DIL-8 form factor based on the DigiSpark Hardware
Project Owner Contributor

DIL-Duino

Daniel Grießhaber

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12.4k
users
475
comment
18
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51
Small audio interface for adding a digital channel to an analog mixer.
Project Owner Contributor

Square Inch USB Sound Card

Jacob Creedon

eye
5.6k
users
588
comment
11
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51
Keychain USB multiple password manager/generator/injector
Project Owner Contributor

Key Pass

danjovic

eye
10.9k
users
85
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12
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50
Measure tire or ball pressure with your smartphone
eye
5.1k
users
91
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21
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50
PowerBlade is the smallest, lowest cost, true-power plug-load power meter, and communicates to smartphones over BLE
Project Owner Contributor

PowerBlade

Sam DeBruin

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7.9k
users
63
comment
52
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49
Sixteen different LED colors on a teeny tiny board.
Project Owner Contributor

blinktronicator

zakqwy

eye
5.4k
users
42
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18
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47
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

eye
4.7k
users
50
comment
27
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45
Remake of the TIL311 hex LED display with recent technology.
Project Owner Contributor

PICTIL

al1

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17k
users
71
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17
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43
Not as bulky as the nucleo boards, after all.
Project Owner Contributor

STM32F030F4P6 breakout board

Christoph

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9.5k
users
89
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14
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43
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

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7.3k
users
1.7k
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9
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43
I love to program programmers. Yo dawg...
eye
4.6k
users
32
comment
16
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38
Pseudo Random VGA blinking lights generator
Project Owner Contributor

VGA Blinking Lights

danjovic

eye
12.3k
users
404
comment
3
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35
A replacement controller for Lavet stepper clock movements
Project Owner Contributor

Crazy Clock

Nick Sayer

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5.6k
users
976
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8
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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

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3k
users
581
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21
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32
small seven segment display for plugging on an ISP programming header of an Atmel Board or an Arduino
Project Owner Contributor

tiny7

al1

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5k
users
38
comment
10
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31
Volt- and ohmmeter plus calculator on 25x25mm PCB
Project Owner Contributor

Micro progmeter

jaromir.sukuba

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1.2k
users
34
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6
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28
Ultra small Fully autonomy capable UAV autopilot
Project Owner Contributor

Lisa/S Autopilot

Piotr Esden-Tempski

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1.2k
users
141
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3
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26
Play retro color 8 bit games on your TV from an Arduino.
Project Owner Contributor

Arduinocade

rossumur

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4.5k
users
849
comment
11
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24
A compact solution for your closed loop positioning requirements
eye
4.9k
users
1.3k
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17
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24
Customisable USB adapter for arcade controls.
Project Owner Contributor

AVeRCADE

danjovic

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2.5k
users
25
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4
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23
Miniature dev board for SAM21D / SAM20D ARM cortex M0+
Project Owner Contributor

mini SAM

al1

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6k
users
40
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13
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23
Converts 0 - 30 MHz up to 50 - 80 MHz. Allows HF(shortwave) reception on RTL-SDRs and the like. A square inch project entry
eye
2.3k
users
26
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3
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19
Entry for SquareInch competition: TOTP token
Project Owner Contributor

T(iny)OTP

Gus Logan

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2.2k
users
32
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9
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18
An MPPT solar boost converter with 3.3v Output and Supercap energy storage.
Project Owner Contributor

1 Square Inch of Power

OzQube

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963
users
9
comment
4
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18
Adapter for playing Atari 2600 with Wii Nunchuck, with or without the accelerometers
Project Owner Contributor

AT26-Chuck

danjovic

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9.2k
users
559
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20
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18
A tiny low cost Bluetooth Low Energy board for miniature and wearable projects.
Project Owner Contributor

Tiny Low Cost BLE

JamesCannan

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2.5k
users
28
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3
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18
A Powermeter for USB Devices / Gadgets
Project Owner Contributor

USB Power Meter

Daniel Grießhaber

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3.3k
users
574
comment
4
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16
A very small HiFi audio CODEC module
Project Owner Contributor

HiFi audio codec module

Michele Perla

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2.1k
users
29
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9
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15
An extremely simple, dependable continuity tester
eye
3.4k
users
28
comment
10
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15
There are more bats around than you think!
Project Owner Contributor

World's Smallest Bat Detector

spambake

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985
users
15
comment
4
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15
Breadboard-compatible USB PIC16F1455 board
Project Owner Contributor

USBreadboardIT

WallaceIT

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1.1k
users
188
comment
2
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15
I wanted to make a small, practical wristwatch that could be enclosed in a "fashionable" enclosure.
Project Owner Contributor

LED Wristwatch

Will

eye
1.6k
users
20
comment
4
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14
Very tiny Arduino compatible board
Project Owner Contributor

Pointduino Mini

Furkan Çetin

eye
745
users
10
comment
15
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14
A 1" round wearable with 8 LEDs
Project Owner Contributor

Tiny Blinky

Nick Sayer

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1.5k
users
386
comment
9
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13
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

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616
users
595
comment
17
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13
OSHW Logic gate into breakout boards for easy prototyping.
Project Owner Contributor

Logic Block

JRodrigo

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2.5k
users
294
comment
10
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13
Super tiny, Micro clock using a Numitron as its display. Running off a 400mAh lipo battery.
Project Owner Contributor

Micro NumiTron clock

Jeremy g.

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565
users
7
comment
12
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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

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874
users
13
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2
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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

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1.4k
users
15
comment
4
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11
Clone of the blink(1) indicator light with ATTiny85 and V-USB
Project Owner Contributor

blink(inch)

spro

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1.1k
users
11
comment
4
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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

eye
857
users
187
comment
12
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10
LED Fireflies that pulse at dusk
Project Owner Contributor

LED Fireflies

David

eye
1.2k
users
16
comment
5
skull
10
Tiny quadruped based on ESP8266
Project Owner Contributor

µKatka

Radomir Dopieralski

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770
users
14
comment
2
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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

eye
784
users
30
comment
4
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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

eye
495
users
5
comment
4
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7
DIPSY StarterKit a 1x1 Inch board!
Project Owner Contributor

DIPSY-STARTER

Antti Lukats

eye
1.4k
users
13
comment
6
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7
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

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2.8k
users
694
comment
7
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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

eye
512
users
124
comment
4
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6
DIY toaster reflow oven controller with web interface. It's useful... I promise!
Project Owner Contributor

MostToast

Patrick Lloyd

eye
1.4k
users
10
comment
2
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6
Breathing LED lamp for Motorcycle using ATtiny
Project Owner Contributor

p.u.l.s.e v1

Anool Mahidharia

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402
users
9
comment
10
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6
This is a miniature selfcontained webserver, using a PIC18F67J60, and has 16Mbit webpage storage.
Project Owner Contributor

MicroEthernet

FrazzledBadger

eye
350
users
7
comment
2
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5
Human Infected Zombie - A one square inch multiplayer game with IR communications
Project Owner Contributor

HIZ

matseng

eye
1k
users
580
comment
7
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5
Program your AVR over WiFi using the standard ISP header already on your board!
Project Owner Contributor

ESPecially Easy AVR Programming

jarek319

eye
887
users
448
comment
10
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5
Solar powered audio only variometer using MSP430 and MS5611
Project Owner Contributor

Sunny Vario

Alex

eye
597
users
6
comment
21
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4
A far-stretch for the 1sq-in contest!
eye
538
users
13
comment
2
skull
4
XBee compatible board using NRF24L01
Project Owner Contributor

NRFBee

Furkan Çetin

eye
185
users
462
comment
4
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3
A very small microcontrolled RGB led circuit.
Project Owner Contributor

Wedding LED doodads

FrazzledBadger

eye
284
users
5
comment
3
skull
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

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449
users
552
comment
4
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3
An open source tiny controller for tiny robots
Project Owner Contributor

nanoARC

adamcatley

eye
648
users
4
comment
2
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3
Finally got it off of my breadboard.
Project Owner Contributor

I2C Temp Sensor Board

mcu_nerd

eye
636
users
4
comment
2
skull
3
Portable headphone amplifier with built in LiPo battery charger.
eye
499
users
5
comment
2
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3
A basic breakout board that converts an ESP-12E module into an XBee footprint.
Project Owner Contributor

ESP-12E Breakout Board

Daniel Eisterhold

eye
245
users
122
comment
5
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2
A very tiny all-in-one robot board. Designed for OneSquareInch.
Project Owner Contributor

Neurobot board

Andy

eye
390
users
481
comment
2
skull
1
nGoline One Square Inch ESP8266 Relay powered by mains
Project Owner Contributor

NOSIER

nGoline

eye
412
users
3
comment
2
skull
1
DSPIC33 square inch dev board.
Project Owner Contributor

DSPIC33 SQI

sutfuf

eye
70
users
2
comment
2
skull
0
small version of the nsl annalogic 8 logic lines.
Project Owner Contributor

nsl annalogic

charliex

eye
129
users
2
comment
2
skull
0
EKG on a square inch board.
Project Owner Contributor

Square inch EKG

Jeff Stubler