Use a Raspberry Pi as a USB keyboard controlled through HTTP requests. We use this project to control a Siemens ACUSON SC2000 ultrasound machine by emulating a keyboard/footswitch. Currently, only predefined actions/keypresses can be triggered.
We use a Raspberry Pi 3 A+ with Raspberry Pi OS, but any Raspberry Pi with USB OTG support should work.
sudo ./install.shwill set the appropriate boot options for USB OTG and install a usb-gadget.service and hid-webserver.service systemd service. Reboot the Raspberry Pi after installation.
Test if keypresses can be issued:
curl -X POST -H "Content-Type: application/json" -d '{"action": "ping"}' http://localhost:8080You can define an actions in main.py and send them via HTTP POST requests to the webserver:
sudo systemctl restart hid-webserver
curl -X POST -H "Content-Type: application/json" -d '{"action": "save_recording"}' http://localhost:8080