On 29/02/2012 10:03 PM, alan.b.pearce@stfc.ac.uk wrote: >> Yeah, already played with the robot ones. They are open transducers. >> The sealed ones need a lot more drive level it seems. >> >> I guess my question is really two-fold; >> >> A) Does anyone have a reasonable reference design for interfacing to the= sealed >> parking type sensors? >> >> B) Is there some basic code out there that shows what's required the pin= g and >> receive? >> >> There are lots of Google hits for unsealed Tx-Rx pair system, but not mu= ch for the >> sealed all in one units. >> David... > Sounds like time to mount the 'scope in the car, and do some manoeuvring = .... I have an after market 4 sensor system on the way. :-) Hopefully, being cheap they don't use any esoteric parts. The PIC code should be easy enough now that I've found a bit more info=20 on their general operation. David... --=20 ___________________________________________ David Duffy Audio Visual Devices P/L Unit 8, 10 Hook St, Capalaba 4157 Australia Ph: +61 7 38235717 Fax: +61 7 38234717 Our Web Site: www.audiovisualdevices.com.au ___________________________________________ --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .