IOIO

The IOIO board contains a single PIC MCU that acts as a USB host/USB slave and communicates with an Android app running on a connected Android device. In addition to basic digital input/output and analog input, the IOIO library also handles PWM, I2C, SPI, UART, Input capture, Capacitive sensing and advanced motor control. Developers may send a sequence of high-level commands to the IOIO, which performs the low-level waveform generation on-chip. Second-generation IOIO-OTG devices must be updated using a desktop computer running the IOIODude application. The IOIO supports both computers and Android devices as first-class hosts, and provides the exact API on both types of devices. ==Applications==

The IOIO hardware and software is entirely open source, and enabled the creation of hundreds of DIY robotic projects around the world. The board has been featured in various learning kits, which aim to help students write Android applications that can interact with the external world. A team led by Israeli inventor Dr. Guy Hoffman created an emotionally-sensitive robot, that relies on the IOIO to control the robot's hardware. ==Reviews==

The IOIO has been variously described as a "geek's paradise", "an easy way to get I/O from an Android device’s USB connection" and "a USB I/O breakout board for Android smartphones which turns your handset into a super-Arduino of sorts". It featured as a recommended "gift for geeks" in a Scientific Computing article. According to SlashGear, an online electronics magazine: According to SparkFun, the first manufacturer of the device: According to Ytai Ben-Tsvi, the inventor of the device: ==Technical details==

IOIO V1 The first-generation IOIO boards (known as IOIO V1) contain the following on-board features: This generation only supports USB slave mode, and requires a USB master as the host (PC or newer Android phones). The 5 V regulator supports a 5–15 V input range and up to 1.5 A load. As the name suggests, a key feature of this generation is the introduction of USB-OTG, supporting USB master or slave mode. This enables the IOIO to connect to older Android phones that only support USB slave mode, in addition. The IOIO-OTG is a 3.3 V logic level device, with some of the pins being 5 V tolerant. It features a 5 V DC/DC switching regulator and a 3.3 V linear regulator. The 5 V regulator supports a 5–15 V input range and up to 3 A load. This facilitates charging a connected Android device as well as driving several small motors or similar loads. ==See also==