joska wrote:It should work fine on the Teensy 2.0++ according to vfrvulcan. I have not tested it myself but I don't see why it shouldn't work. Maybe your ++ is faulty.
Some things to try:
1. Unplug the mouse from the ST keyboard.
2. I don't think the ST keyboards have pull-up resistors on the Tx/Rx lines. These are located on the ST motherboard. Try adding a pull-up resistor to the Teensy Rx pin (1k resistor from Rx to 5V).
Powering the keyboard from the Teensy would normally not be a problem, unless there is something wrong with the USB port/cable/Teensy/keyboard.
roninfourseven wrote:So, no joy with the pull up resistor on the right side, is it worth trying it on the tx side?
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