For the last few decades, generally speaking, we’ve had computers, and we’ve had physical, modular, analog gear. Computers are endlessly patchable, but not using physical cords. Modulars use physical cords, but they lack the flexibility (and affordability) of a computer. Now, US$25 and an Arduino can change that. rePatcher is a simple, tangible modular interface for computers. It could work with any software, but right out of the gate it already works with two popular (virtual) patching environments, Max/MSP and the free and open source Pure Data (Pd). You use physical patch cords…