A 1-Wire potentiometer was slated for the Bus Pirate demo board, but it’s been discontinued. The DS2890 is a simple 3pin through-hole device, but Maxim’s recommended replacement is a 16 pin chip with a 2 wire interface.
We weren’t the first to be annoyed by the recommendation, check out this comment on the replacement part:
Where’s 1-wire heading? Every time a unique 1-wire product is discontinued, you are making the entire protocol less relevant. Mentioning a 2-wire potentiometer as alternative is an insult; there are hundreds of such devices from all manufacturers but they are useless in a 1-wire network.
Do Maxim have any faith in 1-wire?
What’s up with 1-wire?