sanddune008
New Member
Hi All,
I am facing problem in interfacing IR LED to PIC(developing an IR transmitter to an already working speaker IR receiver)......Speakers IR receiver is not able to receive the command.
1. I am transmitting the Pronto command at 38 Khz frequency
I have connect as per the link:
Infra/radio remote control encoder/decoder with PIC
similar to this in the link
4/8-channel V4.2 IR transmitter.
Schematic explanation:
I have connected the CCP1 pin to the the gate(BS170) and drain is connected to the cathode of the IRLED, anode of IRLED is connected through 10K resistor to Vcc.
Source of BS170 is connected to GND.
1. How to determine whether my IR LED is oscillating at 38Khz.
2. Will BS170 be able to switch on and off at that speed.
3. able to verify that the command at the CCP1 and gate of the BS170 in oscilloscope.
What may the reason for the receiver not detect the command?
Thanks in advance
I am facing problem in interfacing IR LED to PIC(developing an IR transmitter to an already working speaker IR receiver)......Speakers IR receiver is not able to receive the command.
1. I am transmitting the Pronto command at 38 Khz frequency
I have connect as per the link:
Infra/radio remote control encoder/decoder with PIC
similar to this in the link
4/8-channel V4.2 IR transmitter.
Schematic explanation:
I have connected the CCP1 pin to the the gate(BS170) and drain is connected to the cathode of the IRLED, anode of IRLED is connected through 10K resistor to Vcc.
Source of BS170 is connected to GND.
1. How to determine whether my IR LED is oscillating at 38Khz.
2. Will BS170 be able to switch on and off at that speed.
3. able to verify that the command at the CCP1 and gate of the BS170 in oscilloscope.
What may the reason for the receiver not detect the command?
Thanks in advance
Last edited: