For testing he’s soldered an IDC plug to the cartridge cover pin interface but this only requires four connections. The Arduino can both send and receive data from the DS lite as shown in the ...

Its parallel interface was very appropriate in ... it was determined that it would be relatively simple to have an Arduino convert incoming serial data into a parallel output to the printer.

Celebrate 20 years of Arduino software ... a more responsive interface, autocompletion, code navigation, and a new Board and Library manager. IDE 2.3.4 also brings a serial monitor with graph ...