R/C Switch, simple

Parts List:
R1,R2,R3 = 10K
      P1 = 20K, multi-turn trimmer pot            
   C1,C3 = 10uF, 16V
      C2 = 0.1uF (100nF)
     IC1 = CD4001 CMOS
      Q1 = see text
This is a simple electronic switch to replace a servo and micro switch to do the on-off switching.
Connect the input to a spare receiver channel, like 'Gear', or any other. Adjust P1 for the setting you want on any proportional channel. The 'Out' pin of the collector of Q1 goes to relay if you switch a battery load on/off.
For Q1, use any suitable type to switch your relay. I used a regular 2N2222A + 5A relay for the job (on/off switching a 12V/2A battery pack).

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