Open hardware electronic devices

Arduino () is an Italian open-source hardware and software company (owned by Qualcomm), as well as a project and user community that designs and manufactures single-board microcontrollers and microcontroller kits for building digital and other kinds of devices. Its hardware products are licensed under a CC BY-SA license, while the software is licensed under the GNU Lesser General Public License (LGPL) or the GNU General Public License (GPL), permitting the manufacture of Arduino boards and software distribution by anyone. Arduino boards are available commercially from the official website or t

WikiReader was a project to deliver an offline, text-only version of Wikipedia on a mobile device. The project was sponsored by Openmoko and made by Pandigital, and its source code has been released.

thumb|right|Single high-brightness Light-emitting diode|LED with a cheap [[loupe lens creates a bright narrow beam that can stream DVD-quality video over neighbourhoods. The red beam is invisible when observed outside of its unobstructed path.]] thumb|Twibright Ronja with diameter lenses, operating on a link using visible red light, max. range , with HPWT-BD00-E4000 transmitter LED. Installed on a rooftop, with its user posing to the right, in Czech Republic. thumb|right|Three bolts preloaded with pink rubber blocks facilitate fine adjustment of the optical head direction with a gear ratio 1:3

thumb|NodeMCU DEVKIT 1.0, bottom|alt= NodeMCU is a low-cost open source IoT platform. It initially included firmware which runs on the ESP8266 Wi-Fi SoC from Espressif Systems, and hardware which was based on the ESP-12 module. Later, support for the ESP32 32-bit MCU was added.

Czech open-source fused deposition modelling 3D printer

open source GPU

right|300px|thumb|alt=Elphel NC353L|Elphel model 353 with internal HDD Elphel, Inc. designs and manufactures open hardware and free software cameras. The company was founded in 2001 by Russian physicist Andrey Filippov, who emigrated to the US in 1995.

computer software for electronics prototyping

The Arduboy is a handheld game console with open source software, based on the Arduino hardware platform.

thumb|right OpenCores is a community developing digital open-source hardware through electronic design automation (EDA), with a similar ethos to the free software movement. OpenCores hopes to eliminate redundant design work and significantly reduce development costs. A number of companies have been reported as adopting OpenCores IP in chips, or as adjuncts to EDA tools. OpenCores is also sometimes cited as an example of open source in the electronics hardware community.

product family of software-defined radios

thumb|The Fab@Home Model 1 (2006) thumb|A Fab@Home Model 1 variant shown at the London Science Museum

thumb|alt=A netduino board Netduino was an open-source electronics prototyping platform based on the .NET Micro Framework. It uses the ARM Cortex-M 32-bit RISC ARM processor core as a 32-bit ARM-microcontroller. The Netduino boards (except the discontinued Mini and Go models) are designed to be pin-compatible with most Arduino shields. Applications can be built on Windows (with Visual Studio), or on Mac OS (with Xamarin Studio). The platform is similar in concept to the Arduino platform, but is generally more powerful and instead of writing applications in C/C++ or Wiring (essentially, C++ wit

single-board computer

right|thumb|A TV-B-Gone