Very small hardware project: Little Brother Grows Up Reloaded

[Thorsten Günther]

Hello!

 

I have been drawing a new layout for the "Little Brother Grows Up" schematic this afternoon. Since I am only an amateur and lack some technical knowledge (e.g. I do not understand why there are two further capacitors - C1 and C5 - necessary in this schematic, both just connecting the top of C188 - a mainboard capacitor - to its bottom). I put them in anyway.

 

If one only wants composite, it should be perfectly "legal" to leave out R12, AFAIK.

 

Since I also sincerely doubted the necessity of another CD4050 on the board (since there already is A111 on the mainboard and in the original schematics, the output signals from this CD4050 are directly fed into just another CD4050), I left it out (this has been done with the 2600 s-video mod from the FAQ already, with good results).

 

AFAIK, Instead of tapping the CD4050s output from various resistors on the mainboard, it is also possible to bend up pins 2,4,6,10 and 12 and solder the mod to these pins.

 

Please check the design for any mistakes (as I said,i am an amateur) before trying it yourself. Oh, and sorry for the lying resistors depicted - several of them need to stand upright, but the software I used doesn't allow that.

 

 

Edited February 26, 2012 by Thorsten Günther

[sloopy]

Greetings.

 

sloopy.