-------- In message <blu170-w50577ecf0b24fa2bcefc50ce...@phx.gbl>, Mark Sims writes:
>Sparkfun is selling a board (around $15) based on the STM VL6180 >chip that measures distance based upon time-of-flight of pulses >from an on chip (or at least in-package) VCSEL IR laser. Claims >to have a range of 0 .. maybe 30 cm. Unfortunately it doesn't >look like you can directly access the time interval measurement >portion of the chip. It doesn't measure time interval, it measures frequency. These devices contain an oscillator where the flight of the light pulse is the delay element, then measure the resulting frequency. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 p...@freebsd.org | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
