Expansion Board V3.1 connecting to Raspberry Pi 3

[zmaier]

hi everyone,
i am trying to conneect a Wipy3 on a Expansion Board3.1 to a RasPi 3 via USB. But i cannot find the device under /dev /...
Do i have to install drivers? Which dev is it?

Hope you can help,
regards Martin

[protean]

@zmaier it should show up as a generic raw tty device.

On my system, it's called: /dev/ttyACM0.

Can you share the output of ls -al /dev/tty*?

[zmaier]

Hi, here the output, its a lot, so i skipped the beginning.
How can i open a REPL Terminal?
thx
Zmaier

crw--w---- 1 root tty 4, 57 Mai 1 20:17 /dev/tty57
crw--w---- 1 root tty 4, 58 Mai 1 20:17 /dev/tty58
crw--w---- 1 root tty 4, 59 Mai 1 20:17 /dev/tty59
crw--w---- 1 root tty 4, 6 Mai 1 20:17 /dev/tty6
crw--w---- 1 root tty 4, 60 Mai 1 20:17 /dev/tty60
crw--w---- 1 root tty 4, 61 Mai 1 20:17 /dev/tty61
crw--w---- 1 root tty 4, 62 Mai 1 20:17 /dev/tty62
crw--w---- 1 root tty 4, 63 Mai 1 20:17 /dev/tty63
crw--w---- 1 root tty 4, 7 Mai 1 20:17 /dev/tty7
crw--w---- 1 root tty 4, 8 Mai 1 20:17 /dev/tty8
crw--w---- 1 root tty 4, 9 Mai 1 20:17 /dev/tty9
crw-rw---- 1 root dialout 166, 0 Mai 1 20:17 /dev/ttyACM0
crw-rw---- 1 root dialout 204, 64 Mai 1 20:17 /dev/ttyAMA0
crw------- 1 root root 5, 3 Mai 1 20:17 /dev/ttyprintk

[crumble]

@zmaier
The pycom device may need too much power. Plug an active hub inbetween them

[zmaier]

@crumble : The Wipy is listed in my /dev/. Why is more power needed?

[protean]

@zmaier I don't know what terminal applications you have available, but i use minicom, personally.

minicom -D /dev/ttyACM0 should give you a shell into the device. You can use other programs too, as documented here: https://docs.pycom.io/gettingstarted/programming/repl/serial.html

Then you can use ctrl commands as documented here: https://docs.pycom.io/gettingstarted/programming/repl/

It's just a pretty standard micro python environment, you can read about the REPL here: https://docs.micropython.org/en/latest/esp8266/tutorial/repl.html

[zmaier]

@protean thx! it is working now.