add note to pt to n23

README.md

@@ -14,6 +14,8 @@ The board receives commands from an automatakit network and faithfully executes
 
 See [circuit chatter](/circuit) and [firmware chatter](/embedded).
 
+**FOR CODE** use embedded at [ATKStepper23](https://gitlab.cba.mit.edu/jakeread/atkstepper23)
+
 # Viable Commands
 
 ### Test