PicDude wrote: > Is this 100mA limit based on the > power-supply electronics on the board, or because it's the default > power that the USB port can deliver w/o the software explicitly > requesting more? The firmware always requests the full 500mA. The limitation is due the current gain of the boost supply, the voltage drop on R25, and possibly the control algorithm of the 8.2V supply. > Is there a relatively simple way to modify it so it can deliver more > Vdd current? Possibly. See my other response. Again, this depends on how many you need. ******************************************************************** Embed Inc, Littleton Massachusetts, http://www.embedinc.com/products (978) 742-9014. Gold level PIC consultants since 2000. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist