Prototyping Board #2: Pictures This is a prototype of the forthcoming BPM Generator Eurorack Module. It’s constituted with: One Prototyping Board #2, two Protoboard #1, one Generic Board #1 and one Arduino. The Arduino board plugged underneath the Prototyping Board #2 Closeup. The chips in the middle. Easy prototyping with the Prototyping Boards. BPM Generator is on it’s way! This is a prototype of the forthcoming BPM Generator Eurorack Module. It’s constituted with: One Prototyping Board #2, two Protoboard #1, one Generic Board #1 and one Arduino. The Arduino board plugged underneath the Prototyping Board #2 The chips in the middle. Closeup. Easy prototyping with the Prototyping Boards. BPM Generator is on it’s way!