MD and RST Buttons
The function of the MD button is described in Setup (MD) Button (line).
Pressing the reset button causes a hardware reset.
Both buttons face right on Tibbo Project PCBs. For assembly inside a Tibbo Project Box (TPB), a TPP must be outfitted with a so-called MD/RST button PCB. This is a small PCB with two buttons facing upward. When plugged into the TPP board, these buttons work in parallel with the buttons of the TPP board.
The MD/RTS PCB is necessary only when you assemble the TPP board into the Tibbo Project Box. Hence, the MD/RST PCB is supplied as a part of the TPB kit, not the Tibbo Project PCB.