Long-time lurker. I'll start with apologies if this is an answered topic as I don't trust my search skills. Nevertheless, I'm preparing to build my first two portable NESes.
I'm concerned about heat build up issues and possible attaching a small brushless fan. I'm not sure if it's needed, or is overkill. If it's needed, are there any known shorcuts to triggering it for part time use? My first thoughts were to use a basic comparator to assign on/off voltages to whatever temp(s). . . which raises another question: At what core temp to start the fan? Anyway, I'm guessing I'm overthinking things like usual, feel free to laugh
As for power:
I'll be using this really nifty all-purpose charger board.

This thing is great and will charge almost any battery series/pack with any wall wart (it has a robust bride rectifier that will take anything/any polarity from Fischer Price toy plugs to laptop cables). I'll be using it to charge 6 AA's.
Here's a link to the relevant schematics for the charger board (look for the pdf's under "Documents"): http://eecs.oregonstate.edu/education/r ... rgerboard/
One will have a 3.5" screen and the other a 4.3" (DealExtreme variety), I haven't decided on audio, but I bookmarked some link from the forums talking about splitting the mono signal.
I'm also going to cannibalize some USB memory sticks and work it in with the video processor and audio (for video/mp3 use); or just wire in a SD Card reader. If I can find the cheap FM receivers I used have lying around, I'll find a place to hot glue that board in as well/in place separate audio amp.
As for casing, that's my weak point. Not sure what to do. I have all my parts, but nothing to dress them up in.
That's about is. Any/all input is appreciated. Especially related to having a cooling fan.