[time-nuts] Slightly OT: inexpensive USB analog-digital converter?

[John Ackermann N8UR]

I'm looking for a couple of inexpensive sensors with a couple of
channels of 10 or 12 bit ADC and ideally a USB interface (emulating a
serial device).

I've done a bit of googling and everything I've found has been either
fairly pricey (well over $100 each) or cheap, but with only 8 bits
resolution.

(My goal is to add digital voltage and current monitoring to some older
bench power supplies.)

Thanks!

John