The market has been inundated with cheap RC toys. Most of them use the RX/TX Integrated Circuits that have 5 to 9 functions:

All of them operate on an ON/OFF state.

Has anyone tried to feed a PWM signal to these and see if they have enough frequency output on the Receiving end?

  • \$\begingroup\$ Are you trying to implement a poor-man's proportional steering / throttle control? \$\endgroup\$
    – Dave
    Commented Oct 2, 2012 at 13:13
  • \$\begingroup\$ @Dave Yeap, you got it quite right. \$\endgroup\$ Commented Oct 2, 2012 at 13:17
  • \$\begingroup\$ @Gustavo, these parts sound quite interesting. I was just looking around but can't find them at my usual shops. Where do you buy them? \$\endgroup\$
    – wollud1969
    Commented Jan 30, 2013 at 14:11
  • \$\begingroup\$ @wollud1969 I've never got to the point of investigating a supplier. I've "sourced" mine from discarded cheap RC toys that I had laying around. \$\endgroup\$ Commented Feb 19, 2013 at 23:02
  • \$\begingroup\$ Technically, the answer is yes. The more important question is what the PWM frequency limit would be, with anything from perhaps half a Hertz to a few hundred being believable without consulting the data sheet. \$\endgroup\$ Commented Apr 30, 2013 at 14:45

1 Answer 1


The second of those datasheets talks about using a 1khz PWM signal internally for communicating, so I suspect transmitting PWM through them will not work.


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