https://tinyurl.com/44e8spnc : the MakeCode to control the carrier via Bluetooth. The app is called BST M_bit app.
https://tinyurl.com/2bckyasy : One source for the Yahboom power board.
https://tinyurl.com/633x7ks7 : link to Zoom seminar ; keyboard programming of MakeCode. Microsoft assistive technology.