Teensy connection issue

Support
1

Hi Chris,

I having a problem with connecting a Teensy 4.1 in MWorks 12.2. I hope you can help me out.
Here is the code I am running:

var teensy_connection = 0

firmata teensy (
    serial_port = '/dev/cu.usbmodem161512901'
    data_interval = 5ms
    reconnect_interval = 500ms
    connected = teensy_connection
    alt=teensy
) {
}

protocol {
    start_io_device (teensy)
    wait (1s)
    if (teensy_connection == 1) {
        report('Teensy connected')
    }
    stop_io_device(teensy)
}

and here are the logs:

27:54:55:  Configuring Firmata device "teensy"...
27:54:58:  WARNING: Received unexpected command (0x30) from Firmata device "teensy"
27:54:59:  WARNING: Received unexpected command (0x30) from Firmata device "teensy"
27:55:00:  ERROR: Firmata device "teensy" did not respond to request for protocol version
27:55:00:  Experiment successfully loaded, using protocol: idp105553180631423
27:55:04:  Opened data file: /Users/vladyslav/Documents/MWorks/Data/vladyslav-teensy-20250516-204357.mwk2
27:55:04:  Setting protocol to idp105553180631423
27:55:04:  Running MWorks 0.12.2 (2023.10.02)
27:55:04:  Current date/time is Fri May 16 20:43:57 CEST 2025
27:55:04:  Using protocol idp105553180631423
27:55:04:  Called start on state system
27:55:04:  Starting state system....
27:55:05:  State system ending
27:55:05:  Resetting experiment

Best,
Vladyslav

2

Hi Vladyslav,

Have you installed the Firmata firmware on the Teensy?

Cheers,
Chris

3

As it turns out I have to install the firmware :sweat_smile:
Thanks!