Hi again Um...Me123, i have been a little bit busy
About that LCD...sorry for being persistant
Of course you should have the LCD DVM if you really want it, i was only pointing you at some of its drawbacks, and it will of course not jump around that much, only when you are just barely over an even voltage when you have a load that fluktuate much! And also the fact that it needs a separate power source.
I'm including outlets on each side of the box that can be turned on and off for things like glue/solder gun
I'm not sure that you should include this in the PSU:s box, instead you can build a "power box" with switches for the outputs. A solder gun is not the best tool for soldering electronics, a solder iron is better and best is a temp controlled solderstation.
So I can light the switches and the meter with a 9V battery and turn the whole system on and off with a DPST
Never ever connect anything belonging to the secondary side on a mains switch, it's not safe! Exeption: there is mains switches that are made for this, with increased insulation between the mains switch section and the switch for the secondary side.
Do I actually need a shunt (if so what kind)?
No, they are for current measuring
Do you always have to have a capacitor to use a 555?
No, you dont always need a cap for a 555, but if you gonna use it as a timer you have to. Read the application notes for the 555
Do you suggest I get one of those packs of 50 (for example) different capacitors and one for resistors to be able to expiriment with different values for projects?
Sure, one pack of electrolytics and one pack of plastic foil caps and one pack of ceramic capacitors, and of course, a pack of resistors, they are always usable when you experiment, go right to the store
I can't think of when I'll need anything above 12V so wouldn't it just be easier to ad a 13.5V 1A AC to DC wall trans. and can skip some of the problems.