rrw@naucse.cse.nau.edu (Robert Wier) (10/13/90)
I have need to do some distance measurements, relatively low precision (say, to 1") at a range of about 6' - 10'. I remember a number of years ago that Poloroid (I THINK) had a design kit available based on the circuit they were using in their auto focus cameras. I also remember it as being relatively expensive for educational use ($200?). At any rate, I need information on this now, and of course I can't find anything in my files. Several questions: Does anyone know if either Don Lancaster or Steve Circica (spelling?) has had any articles on this? Does anyone have a contact number at Poloroid? Any good sources for modules? I see old/bashed poloroid cameras at swap fests fairly regularly, in the 10$ - 15$ range. I'd thought about buying some of these and extracting the ultrasonic module. Wonder if anyone has already done this? I'd be very grateful for any information along these lines. Thanks! -bw - Bob Wier -------------- insert favorite standard disclaimers here ---------- College of Engineering Northern Arizona University / Flagstaff, Arizona Internet: rrw@naucse.cse.nau.edu | BITNET: WIER@NAUVAX | WB5KXH or uucp: ...arizona!naucse!rrw
wb8foz@mthvax.cs.miami.edu (David Lesher) (10/13/90)
In <2691@naucse.cse.nau.edu> rrw@naucse.cse.nau.edu (Robert Wier) writes: > I have need to do some distance measurements, relatively > low precision (say, to 1") at a range of about 6' - 10'. > I remember a number of years ago that Poloroid (I THINK) > had a design kit available based on the circuit they were > using in their auto focus cameras. I also remember it as > being relatively expensive for educational use ($200?). At > any rate, I need information on this now, and of course > I can't find anything in my files. Home Depot and such places sell "Digatapes" using these parts for about $10.00. It has an LCD display and comes in a sexy black case. Of course, buying it assembled and working takes all the fun out of it..... -- A host is a host from coast to coast.....wb8foz@mthvax.cs.miami.edu & no one will talk to a host that's close............(305) 255-RTFM Unless the host (that isn't close)......................pob 570-335 is busy, hung or dead....................................33257-0335
hbg6@citek.mcdphx.mot.com (10/14/90)
In article <2691@naucse.cse.nau.edu> rrw@naucse.cse.nau.edu (Robert Wier) writes: > > I see old/bashed poloroid cameras at swap fests fairly regularly, > in the 10$ - 15$ range. I'd thought about buying some of these > and extracting the ultrasonic module. Wonder if anyone > has already done this? > I'm more surprised that no one has figured out and published a 'hack' to use those inexpensive ultrasonic tape measurers I've seen in the hardware store. Simplest case would be to de-mux the display and interface it to a processor. I can look up the Poloroid info if no one else has it handy. I have seen the ad recently and I seem to recall the kit cost around $195. A little steep since the 'tape measure' costs $19.00 John ..................................................................... reply to 'from' address; hbg6@citek.mcdphx.mot.com NOT the 'sender' line address! Someday my sysadm will decide this is a 'real' problem. :-) ..................................................................... All opinions expressed are mine and not Motorolas, their loss. .....................................................................