How much does the circuit cost?
The following breakout is based on assumptions that basically reflect my construction methods, which were wire-wrap. I’m not including basic circuit testing and construction supplies like a breadboard & wires, power supply, solder gun, etc. I’m also not including the cables to connect the circuit to the Chroma and the computer, only because I already had them, and don’t really know what they cost. Costs were what I paid (in USD); of course they’ll vary somewhat according to source. I didn’t include shipping, either.