Homebrew PCBs

The free Eagle program has all of the symbols. I had some time so I 
started the schematic.

But, I asked about pin 8 because the schematic shows it as a control 
signal AND connected to Vdd.

I wonder also about the PNP transistors, should probably be NPN. Is Vdd 
really a battery?

Not a showstopper, but do you really need all three shift registers? 
Plus, I would throw in a pair of small caps onto the crystal.

And those feedback resistors still bug me (the RX433 bothers the shift 
register?). Power decoupling is needed, too.

I presume all DIP packages and big LED's? I don't mind helping, just 
have to have details.

mickeym

 
kaytea2k wrote:

>Nope Pin 14 is for power.  But the feedbak resistors are there 
>because the receiver gives some interference.
>
>--- In Homebrew_PCBs@yahoogroups.com, mickeym <whitemouse@m...> wrote:
>  
>
>>Looks like a wireless to IR relay. Questions:
>>Is pin 8 of the PIC supposed to be connected to Vdd?
>>What's with the feedback resistor on the shift register?
>>
>>mickeym
>>    
>>