Are you a Java developer eager to enhance your Android or PC application with advanced hardware I/O capabilities? Look no further! The IOIO-OTG (pronounced “yo-yo-O-T-G”) is a specialized development board that does just that. It comes with a PIC microcontroller, acting as a bridge to connect your PC or Android app to low - level peripherals like GPIO, PWM, ADC, I²C, SPI, and UART. With an app - level library, you can write control code for these peripherals as easily as any other Java app. What makes the IOIO - OTG stand out from previous models is its ability to use the USB On - The - Go spec to connect as a host or an accessory. There are multiple ways to link the IOIO to your Java app. When the app runs on your Android device, the IOIO - OTG serves as a USB host and can charge your device (it needs its own power source). If your app is on a Windows, Linux, or OSX machine, the IOIO - OTG becomes a virtual serial port and can be powered by the host. Add a USB Bluetooth dongle, and it turns into a wireless Bluetooth serial connection. A switch on the board can force it into host mode, but usually, 'auto' mode works great as it detects its role automatically. We're shipping the IOIO - OTG with V4.02 bootloader and V5.06 application firmware. New firmware is released often and can be upgraded via the IOIODude app without a programmer. This version has fixed issues like IC power failure and added a missing decoupling cap on the AVIN pin. The board has a JST connector for a LiPo battery, pin headers for voltage and ground access, and a trimpot to adjust charge current when in host mode. It also includes a USB - A to micro - A OTG cable for easy connection to your Android device. Note: This product is a collaboration with Ytai Ben - Tsvi, and a part of each sale supports product development. Get started with the IOIO - OTG Hookup Guide. Includes: IOIO - OTG Development Board and USB Female - A to Micro - A Cable. Documents: Schematic, Eagle Files, Datasheet (PIC24FJ256), Application Note (Operating Modes), Hookup Guide, Enginursday Improvement Post, IOIO - OTG Wiki Home, IOIODude Application, IOIO Project Gallery, GitHub.
Using the IOIO - OTG is quite straightforward. First, decide whether your app is running on an Android device or a Windows, Linux, or OSX machine. If it's an Android app, connect the IOIO - OTG to your device using the included USB - A to micro - A OTG cable and the cable that came with your Android device. Make sure the IOIO - OTG has its own power source as it will act as a USB host and charge your device. For apps on a computer, the IOIO - OTG will be in device mode and can be powered by the host. It'll show up as a virtual serial port. If you want a wireless connection, simply plug in a USB Bluetooth dongle. There's a switch on the board. You can use it to force the board into host mode, but most of the time, just leave it in 'auto' mode and it'll figure out its role. When it comes to firmware, keep an eye out for new releases. You can easily upgrade the application firmware using the IOIODude application without the need for a programmer. As for maintenance, make sure the board is kept in a dry and clean place. Check the connections regularly to ensure they're secure. Also, if you're using a LiPo battery connected via the JST connector, follow proper battery safety procedures. Remember, this product is a result of a collaboration, and part of each sale goes towards its support and development.
