Overclocking your PCPs?

[LMNOP]

I looked at a few schematics on some electronically fired PCPs and noted some potential around increasing the clock sampling rate of the trigger system microswitch. In looking at high speed footage around barrel harmonics I noticed that adjusting the IC from a .1pF to .05pF harmonics were reduced and POI was more consistent around 890-903FPS +- ~7 FPS. Has anyone also attached not only a chronograph but a logic analyzer to electronic firing mechanisms?

A .05pF ia like $00.03 so in scope of tuning I was curious. I think some of these electronic triggers run on an ARM7 or ESP32 platform.

Thanks for consideration of the above!

 

[nervoustrig]

I don't know if I can contribute to your questions but I think a couple of the concepts and terms above could use some clarification.

• "increasing the clock sampling rate of the trigger system microswitch" - Did you mean microcontroller? A microswitch doesn't have a sample rate.
• "adjusting the IC from a .1pF to .05pF" - I assume IC is a reference to the microcontroller, and the capacitance is associated with an RC oscillator to set the clock frequency. Is that right?
• "attach a logic analyzer to electronic firing mechanisms" - Logic analyzers are used to examine digital signals, whereas from the other context clues I think you may instead be interested in examining things in the analog domain with an oscilloscope...e.g. harmonics, in which case a transducer like an accelerometer will be needed.

 

[LMNOP]

Thank you for your corrections!

 

[LMNOP]

I don't know if I can contribute to your questions but I think a couple of the concepts and terms above could use some clarification.

• "increasing the clock sampling rate of the trigger system microswitch" - Did you mean microcontroller? A microswitch doesn't have a sample rate.
• "adjusting the IC from a .1pF to .05pF" - I assume IC is a reference to the microcontroller, and the capacitance is associated with an RC oscillator to set the clock frequency. Is that right?
• "attach a logic analyzer to electronic firing mechanisms" - Logic analyzers are used to examine digital signals, whereas from the other context clues I think you may instead be interested in examining things in the analog domain with an oscilloscope...e.g. harmonics, in which case a transducer like an accelerometer will be needed.

Clarifications:

Sampling rate of the microswitch, there is an IC which has a polling interval.

Capacitor swap to adjust the sampling bias.

Logic analyzer on the IC/firing mechanism to reverse engineer the sampling rate.

 

[nervoustrig]

All 3 clarifications are just as confusing as the originals, at least to me. Sorry!