I am looking for some ideas on how to proceed with a small project I have done.
I just completed a small project for my home to monitor a doorway. If anyone passes through the doorway the IR beam is broken and a beeper beeps.
I used the avr410 example for the receiver and some RC5 transmitter code for the transmitter.
The transmitter sends two start bits and one 8 bit byte (0x55) every 100mS. I have modified the receiver routines to accept only 8 bits instead of 14 bits (the original avr410 code).
If the receiver does not see a 0x55, it beeps the buzzer. It works.
I can't help thinking there is a better way to do this. Sending continuous 36KHZ does not work (the receiver does not accept it).
I have seen kits available that will beep if the IR receiver goes low or high. I can't seem to re-create this.
Anyone have any ideas?
I am not looking for handout, or sample code, I just want some advice.