Search found 2 matches

by phb
Wed Aug 20, 2025 10:32 pm
Forum: BioSemi Hardware
Topic: Teensy 4.1 USB Host → BioSemi USB Trigger Interface: Serial data visible in pc termite, but not ActiView
Replies: 1
Views: 2464

Teensy 4.1 USB Host → BioSemi USB Trigger Interface: Serial data visible in pc termite, but not ActiView

I'm developing a Teensy 4.1-based trigger system for ERP experiments using the BioSemi USB Trigger Interface. Codes are successfully transmitted but not appearing in ActiView.

Setup:
- BioSemi Active 2.5 system
- BioSemi USB Trigger Interface (serial-to-parallel converter)
- Teensy 4.1 with USB ...
by phb
Tue Jun 17, 2025 2:22 pm
Forum: BioSemi Hardware
Topic: Clarification on Trigger Logging
Replies: 0
Views: 14388

Clarification on Trigger Logging

I understand that open-drain connections to the USB2 receiver should begin trials in the all open/low state in order to avoid loosing triggers, and that the trigger levels are recorded as 16 bit binary numbers.

In the case of a microcontroller activating and deactivating open drain outputs in ...