This is the Sparkfun Format ProMini (A4-A7 in the middle) and it's used on the Morse Code Buzzer Controller, but will work in the cpNode-PM and BB-ProMini. The cpNode-PM and BB-PM can use the more common DFRobot format (A4, A5 in the middle), which should be less expensive on various marketplaces. We can do programming for cpNodes and Morse Code Buzzer Controllers, see the options when you check out!

cpNode - specify Node # (we recommend 10-99), Line Speed, and an i/o map in bytes - see JMRI's CMRI Node configuration

MCBC - up to 7 telegraph codes (1-3 characters), any "ambiance" text, contact us with any unusual input polarity.