Another interesting project along these lines is a couple of hackers managed to reverse engineer the firmware for the Elektron Machinedrum (a classic early 00’s

Another interesting project along these lines is a couple of hackers managed to reverse engineer the firmware for the Elektron Machinedrum (a classic early 00’s digital drum machine) and add a bunch of new functionality, such as new effects, a melodic mode and more. You can download it from https://www.elektronauts.com/t/machinedrum-sps1-uw-x-06-released-unofficial/159097 https://www.elektronauts.com/t/machinedrum-sps1-uw-x-06-rele.... They’ve unfortunately kept the details of how they did it somewhat private (I believe at the request of Elektron), though some notes on their initial reverse engineering can be found here: https://github.com/jmamma/MIDICtrl20_MegaCommand/issues/88 https://github.com/jmamma/MIDICtrl20_MegaCommand/issues/88