> > There are two primary advantages to resonators. They are a bit cheaper and > more rugged than crystals. For tinkering, crystals are cheap enough and > probably more available. However since your circuit is intended for a model > rocket, rugged is a valid consideration in this case. I think a resonator > is the right choice in this case. > Just one data point, I have flown a 20mhz Xtal on an F and a H motor without a problem. I don't know "how much" difference there is in terms of sensitivity between the two but if you only have an Xtal and it isn't production I'd use it rather than worry about trying to get the resonator going (if its posing a problem). -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist