I have got a rotary encoder on a Raspberry Pi Pico sending data to my computer via the serial port with Python. I have been able to read this in Touchdesigner via the serial DAT, however the data sent (numbers of the rotary encoder position) is sent as a string.
I presumed the easiest option is to convert this string to an integer in Touchdesigner.
I have a basic proficiency with Python, but am a little stuck on how to best implement the serial callbacks links to the serial input.
The incoming data is just one number (as string) per line / row. I am stripping this back to one row with a Select DAT, but I need to get the data as a integer or float first.
If anyone had an example, I would appreciate it.
Many thanks.
I would keep values in the DAT as is and convert them while extracting them for further process when needed.
You can access cell values referencing the op in python : op('table1')[row,column]
If i remember correctly the cell value is automatically casted but you can force its conversion :
op('table1')[row,column] should be the value as integer or float as long it is a numeric value op('table1')[row,column].val should be the value as string int(op('table1')[row,column].val) force casting to integer
Hello,
If you want to send value obtained by GPIO in raspberry pi, I greatly prefere to use node-red.
– there is an integrated GPIO node (install from palette)
– you can directly send OSC from node-red (install from palette)
– you receive the data in oscin chop (for int and float) or oscin Dat (for string)
There is a very good explanation on how to install node-red on raspberry: https://nodered.org/docs/getting-started/raspberrypi
I will make a toturial on how to make profit of node-red for TD. At the moment I use it on raspberry for
– a project distributing theater text on 10 different smartphone
– run Dynamixel motors with OSC
– run a VLC video-player with OSC
Jacques
