The falling edge of a single bit on a couple of cm long 115200 kbps UART connection between a 4D Systems OLED and a bluetooth module.Python script to save screenshot
Observing the travel of light
The falling edge of a single bit on a couple of cm long 115200 kbps UART connection between a 4D Systems OLED and a bluetooth module.
two more cables in between → longer signal propagation time: 3×108 ms-1 (4.2×10−9 s − 1×10−9 s) ~ 1 m
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Ground spring
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Strange looking 40 Hz square wave
Better at 400 Hz
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