Those little modules are handy, I just bought a couple of them. they would probably work. Do you need bidirectional? I In any testing, I like repeatability. If I was doing this I would use one of those 328 NANO boards for under $3. That would allow me to PWM it at 120 or 240Hz to give it some dither and could get fixed PWM values from a keyboard. Not that hard a program. But if you want to go simple I'd try those boards. I just got a couple of the board that have SKU-444 on the back and 3 heat sinks on the front. Haven't fired them up yet but I could probably give you some advice later if there was a problem and wanted to change frequency etc.