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Hardware / Re: Phototransitors power supply
« Last post by Green on December 13, 2014, 07:24:26 PM »it is sufficient if it only supplies the IR receiver.
Just assume the resistance of photo-transistor becomes zero when max IR is received. It will draw about 2mA current when serial with 1.8K ohm resistor. 30mA might not be enough if it also supplies the gyro.
Just assume the resistance of photo-transistor becomes zero when max IR is received. It will draw about 2mA current when serial with 1.8K ohm resistor. 30mA might not be enough if it also supplies the gyro.