Not input detected by the BPod 2

bin

Hi, I am a new user. Hope the question is not too silly. I followed the instruction for the Bpod v2 firmware and software installation, and the software interface can let teensy 3.6 board output the valve and LED signal correctly, but the board somehow can't detect the digital input signal from the input port(39,38,18,15 on Teensy 3.6). The board only connected to the USB cable, and I tried to use a higher voltage input(5V for Vin), it still cannot detect the digital input. I am wondering whether I can get some hints on solving this. Thanks.

Josh

Hi Bin,

Be careful with 5V logic - Teensy 3.6 pins are not 5V tolerant. You should use 3.3V max.

The input pins on Teensy corresponding to the behavior port input channels are interpreted by the Bpod firmware as inverted logic - so 'high' is 0V and 'low' is 5V. You also have to enable the channels from the Bpod Console GUI - select the settings (wrench) icon, and then the ports menu. Make sure ports 1-4 are checked.
Please let me know if this was the issue.
Thanks,
Josh

binbin

Josh wrote[quote='Josh' pid='1619' dateline='1598381724']
Hi Bin,

Be careful with 5V logic - Teensy 3.6 pins are not 5V tolerant. You should use 3.3V max.

The input pins on Teensy corresponding to the behavior port input channels are interpreted by the Bpod firmware as inverted logic - so 'high' is 0V and 'low' is 5V. You also have to enable the channels from the Bpod Console GUI - select the settings (wrench) icon, and then the ports menu. Make sure ports 1-4 are checked.
Please let me know if this was the issue.
Thanks,
Josh

Thank you so much for your reply! (My original account can't leave comments somehow. )