RC5 Remote Controlled Switch Board - AT89C2051 to PIC Based
This attached circuit (image) is for a working AT89C2051 based RC5 Remote Controlled Switch Board (4 Lights, 2 Fans)
I want to implement this circuit using PIC18F
My questions are
1. As I will not be using a PIC reset circuit, can I omit AT89C2051 Pin 1 circuit composed of (100k, 33k, 10uF 50V, BC547, 10k)?
2. The Pin 8 circuit composed of (LED, 1N4007, 470R) is for RC5 data received Led. Can I omit the 1N4007 and replace 470R (Red Led) with 180R (for Blue LED)?
3. I will be using the internal 4MHz Oscillator of PIC and so I will omit the external Oscillator Circuit.
4. What is the purpose of 5V1 Zener + BC639 (Actually TCNL639) + 120R circuit? Can I omit it?
5. They have used 1uF 450V x 2 Capacitors in the power supply circuit but I will use single 2.2uF or 3.3uF 460V X rated Box Capacitors to get more current. Is that okay?
I will come to the code issues later when I make the PIC based circuit and start implementing the code. I have the AT89C2051 code which I had made some time back for the attached circuit and that works fine on hardware.