* Arduino Leonardo with [Circuits@Home USB Host Shield 2.0](http://www.circuitsathome.com/products-page/arduino-shields/usb-host-shield-2-0-for-arduino-assembled)
* Teensy 2.0 with [Circuits@Home USB Host Shield for Arduino Pro Mini](http://www.circuitsathome.com/products-page/arduino-shields/usb-host-shield-for-arduino-pro-mini)
* [Teensy 3.6](https://www.pjrc.com/store/teensy36.html) with [USB Host Cable For Teensy 3.6](https://www.pjrc.com/store/cable_usb_host_t36.html)
* TBD [Teensy LC](https://www.pjrc.com/store/teensylc.html) with [Circuits@Home USB Host Shield for Arduino Pro Mini](http://www.circuitsathome.com/products-page/arduino-shields/usb-host-shield-for-arduino-pro-mini)
1. Stack the USB Host Shield on top of Arduino Leonardo, for Teensy, soldering work is required, you may refer to [this page](http://forum.colemak.com/viewtopic.php?id=1561)
2. Import [USB Host Shield 2.0 library](https://github.com/felis/USB_Host_Shield_2.0) to Arduino IDE
3. Connect the stack to your computer and upload the sketch