I only asked because I've got a couple bags of resonators left over from when I used the evil white prototyping boards with the spring contacts. %-) If the pin spacing of a crystal matches the outer pins of a ceramic resonator then adding the PTH for the center ground pin on the resonators sounds like a pretty cool solution. -----Original Message----- From: Olin Lathrop Sent: May 18, 2005 7:13 PM To: "Microcontroller discussion list - Public." Subject: Re: [PIC] PIC prototype board comments? Charles Craft wrote: > I've had good luck using the internal RC on most recent projects but > did use ceramic resonators at one time. > > Thoughts on having PTH to mount one (ceramic resonator) instead of the > crystal and caps? Is there a reason for using a resonator instead of a crystal other than cost? If not, then the extra $.20 or so seems irrelevant for a one-off unit, especially when your buying a ready-made prototype board. If there is a reason for wanting a resonator regardless of cost, what would be required to support that? The caps can be lifted easily enough, and the board comes without crystals so those pads are available. Would it be good enough to put a ground pad between the two pads for the thru hole crystal? ***************************************************************** Embed Inc, embedded system specialists in Littleton Massachusetts (978) 742-9014, http://www.embedinc.com -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist