Hi guys, I am currently starting out with PICs and have a couple of PIC16F628As.

I currently want to build a voltage display (0-12) and have a startup beeper, hehe

I know that for the voltage display, I need something like a 78L05 or something.

My project is converting an old HardDrive case into a variable voltage lab supply. I am planning to do an analog 317T voltage regulation, and have a PIC do the rest.

I want a startup beeper. If some of you remember, I posted back in the general about a startup beeper, but I truely didn't like that beeper lol.

Also, if its possible to have it have a short burst when I hit certain voltages like, 5V, 12V etc.

Which one of those 2 do you recommend?

I am looking to do a similar function, along with learning about PICs in general. I have been studying Nigel's Tutorial, and getting prepped to build the Main board and the LED boards to gain an understanding before I try anything too complex...would it be best to just skip to the 16F88 over the 16F628A? I was just about to buy the 16F628A but will get the 88s if they will work for the tutorial.

The 16F88 is a much better chip than the 16F628. however, for Nigel's tutorials it is not ideal as you need to add additional instructions (clr ANSEL) and the config will need changing. Both are fairly simple changes and easily implemented if you are willing to make the changes.

Mike.

Thanks, I will take the advise and buy both. I am starting from ground zero, but with high hopes for what I can learn. On your boards you have capacitors, but you don't specify the size...what size is suggested?

Voltage and capacitance(micro-farads?) both. I assumed voltage would be higher than source, but didn't know if capacitance was important.

You are correct, somehow I totally missed the values there. Thanks!