We used to have a group on Yahoo!, but they shut all the groups down. Much of the material is saved thanks to Archive.org - look for it using this link. Try the 2009 links or earlier.
Now, the best way of reaching other Handy Board users is via a group set up by Robert Doerr, here:
https://groups.io/g/handyboard
Thanks, Robert. See you there!
Updated by fredm Mon Dec 14 17:32:19 2020
Hello,
I would like to use the eight digital_outs to operate relays.
Can I directly connect a uln2308a to the out put pins?
I read in the documention that the uln2308a has a 2.7k ohm series resistor for each Darlington pair for operation directly with ttl or 5v comos directly.
thanks,
Terry