Explain this physical phenomenon....
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Uploader Comments (cybrown)
All Comments (14)
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Scuse my english... Beware about non-hobyist solution. Ground plane antenna is not good idea as you are below your plane to receive the frequency. Cap and torroide filter help a bit... but will not resolve your problem. Interference with 900 mhz is quite normal for servo. The solution for that: Put your TX as far as you can from servo. Secondly, you use probably the worst servo with 900 mhz. Good small one I tried who resist well with RFI are the HS81 and Tiny-S. Its night and day.
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you body can change the capacitance of the circuit in essence the same way theremin works
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I get same problem . good servos or bad. whether I use 2.4TX or fm35TX its the same. seperate batteries.
how do I stop it.
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@kodaxii I like xXxM0rbidxXx answer better yours does not sounds "scienceyy" enough ....LOL
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@xXxM0rbidxXx oooooo okay thak u mr wizard lol
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I see...
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Because the body has an electrical charge, just enough to ground it(?)
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Science and junk is the reason this is happening. You see gravity time a million divided by 12 is the capacity of corn in a bag if fish. This creates a space vacuum of cows, chickens and other farm animals who will eventually become gods of the oceans. After a period of 37,000 years, this will all be reversible if you slap an old Korean man with a pixie stick
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when you touch it your body act as a filter
resistor + capacitor. You change the capacity of your circuit.
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....
there is probably 2 phenomena : first the coil act as an antenna and propagate bad CEM in the radio circuit. secondly the motor take periodic current to the battery and if your alim is not well stab it can be amplified in the audio circuit.
You can stop this phenomena by changing the servo circuit to avoid feedback pumping, and filter the 50Hz frequency in radio and alim
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That sounds like interference from your video Tx.
Try making a little box out of aluminium or balsa, paint it with dope that has a LOT of graphite in it, I make it up like grain filler, same way you would talc.
Put 0.1uF decoupling capacitors across +V to ground, this chattering is HF noise on your power rail.
Put a ground plane on the Antenna, something for the Tx to reference on.
Decoupling is your best bet, try it first, it's what you are doing with your finger.
Put a cap on every connector.
cyberteque 2 years ago
Oh its definitely from the video Tx.
The question is why does it stop when I touch the case of the video Tx. I have caps just about everywhere etc. Except the actual servo itself, if I use a better servo I don't have the jitter problem. But I still want to know why touching the video Tx kills the interference. Whats the physics of it.
cybrown 2 years ago