I have tried the PI Network using 10 and 100 Ohms for R and C1,C2 = 1,10,100uf without success.
Prior to this I have tried .01,0.1,1,10,100,470,4700 capacitors across the power rails individually and in combination all with no observable improvement.
I am sure that there is a solution using readily available passive components however without a scope I cannot measure the nature of the noise nor an improvement I may be achieving.
The only successful strategy so far is using the 7805 as a regulator, its isn't fussy about the caps used, it just works. Currently I have two 100uf capacitors across input to ground and output to ground as you would find in any typical application of a 7805.
The noise I want to suppress is coming from the 555, I am not providing an RC Signal and so the ESC is not arming and no power is going to the motor. The noise is observable as very pronounced erratic movement of the steering servo - much more than would be described as jitter or juddering. Again the 7805 completely cures this, I would like a passive solution, but so far have had no success.
While the car would not be operated with no RC Signal, the fact that I can eliminate the noise through the 7805 shows that the 555 is the source and at the extremes of my transmitter range when the ESC has already armed, the spurious signals from the 555 may be enough to cause a runaway.
Again, is there anyone with access to a scope that could setup a 555 Timer based IR Driver and measure the noise then apply a few common approaches with passive components and measure their effectiveness.
I have a solution, its the 7805, but if I had a scope I would still be working on a passive approach.
Any help appreciated