Hi Folks, I have a couple of queries about the LiniStep before I start building it. I have a few UPA1476H which is four NPN Darlington transistors in a DIL package. Could these be used instead of the four TIP122's. The value of R18-R29 , in the diagram they only have one value against two resistors, eg R18 and R19 have 150R against them, is this for each resistor or the total for for both resistors?. Likewise the R1-R6 are marked as 1R 3W, is this supposed to mean six 1R resistors or the total resistance?. thanks, Mike -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist