Hi guys
So I am using and IR receiver to pick up some IR signal at 38kHz, but the interesting thing is, my circuit work fine when my light bulb is on, but if I turned off my light bulb, the circuit seen to pick up the IR signal all the time, why?
My circuit is just a IR distance sensor, my IR receiver picks up the IR signal reflect from my hand, and control a mini servo motor. When there is no hand/object in front of the sensor pairs, nothing should happen.
My IR LED is connected to a digital IO with series resistor, the IR receiver just connect to a digital IO directly.
My light bulb is an energy saving light bulb.
I am using this IR LED:
http://nz.element14.com/kingbright/kp-3216f3c/led-ir-1206-940nm/dp/2290435?Ntt=2290435
and this IR receiver:
http://nz.element14.com/vishay/tsop6238tr/photodiode-ir-receiver-38khz/dp/4913220?Ntt=4913220
So I am using and IR receiver to pick up some IR signal at 38kHz, but the interesting thing is, my circuit work fine when my light bulb is on, but if I turned off my light bulb, the circuit seen to pick up the IR signal all the time, why?
My circuit is just a IR distance sensor, my IR receiver picks up the IR signal reflect from my hand, and control a mini servo motor. When there is no hand/object in front of the sensor pairs, nothing should happen.
My IR LED is connected to a digital IO with series resistor, the IR receiver just connect to a digital IO directly.
My light bulb is an energy saving light bulb.
I am using this IR LED:
http://nz.element14.com/kingbright/kp-3216f3c/led-ir-1206-940nm/dp/2290435?Ntt=2290435
and this IR receiver:
http://nz.element14.com/vishay/tsop6238tr/photodiode-ir-receiver-38khz/dp/4913220?Ntt=4913220