Power and lcd Question

MIDIbox SID
1

I just got and build my first boards,Din,Core,sid, and plan to build contol a set up with 20 x 2 lcd

I got all the parts including lcd from smash (awsome) I do not have the original commodore psu

I do have lots of different wall adaptors,Which I plant to put in case.

?

Do I need 2 seperate power supplys?

cautious to go any futher…

I was told I only needed one 12v power supply?

limited to net use,Have done alot of reading maybe I’m missing something..

If someone could tell me what to get I sure I have or can find it or them..

I would like only one psu that I could put in case as I’ve mounted a computer type power cord to 12 700ma psu (inside) and then to power button to two pin…?

I’m looking for a link for the wire up of 20 x 2 lcd…

Thanks for your time and help

2

Apply power to the module after all parts except the PIC and the optocoupler are mounted. Check the voltage levels between the most important pins with a multimeter (analog or digital doesn’t matter) before plugging the PIC and the 6N138 into the socket:

IC1:MCLR(1) - IC1:Vss(12) = 5V

IC1:Vdd(11) - IC1:Vss(12) = 5V

IC1:Vdd(32) - IC1:Vss(31) = 5V

IC2(8) - IC2:(5) = 5V

I don’t understand where mclr(1) is? where so I test?

3

mclr is pin 1.  look at the schematic and everything will be clear (ie those are the “names” of the pins)

4

I can’t find schematic…Is it on core page? sorry there are alot of links,I must be overlooking it?

I figured they were the pins..But unsure where because of how decribed..

Thanks for your help

Thanks

5

http://ucapps.de/mbhp/mbhp_core_v3.pdf

or for the older R3 smash boards

http://ucapps.de/mbhp/mbhp_core_v2.pdf

6

Thanks! :smiley:

Trying to get power going,core 9v 500ma (good?)

sid 12v dc 150ma? good?

will these do the trick?