Hi,
I want to build an IR transmitter (~ 38kHz).
My plan is to use a NE555 timer to generate the carrier wave (A-stable Operation),
modulate it with a micro controller, and transmit modulated signal via IR LED.
My question:
Can I connect the micro controller output pin directly to the CONT pin of the timer (pin 5) to modulate the wave,
or should I perform the modulation with a MOSFET on the OUT pin (pin 3) ?
Thanks!
I want to build an IR transmitter (~ 38kHz).
My plan is to use a NE555 timer to generate the carrier wave (A-stable Operation),
modulate it with a micro controller, and transmit modulated signal via IR LED.
My question:
Can I connect the micro controller output pin directly to the CONT pin of the timer (pin 5) to modulate the wave,
or should I perform the modulation with a MOSFET on the OUT pin (pin 3) ?
Thanks!