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Could be a tight fit with a switching reg, better would be a drop in high current replacement for the standard power supply. Better overall supply ripple, not just for backlighting. Maybe something for the pocket to, I've heard it struggles with EMS carts

I'm not sure where I got my backlight from, it was maybe 3 or 4 years ago now. The LED's are soldered to flexible PCB and have onboard current limiting resitors. They are horizontal and in my opinion too bright. I'd say they consume more current than the CPU does, and I know that the noise coming from the speaker when there is no audio playing is louder than an unmodded unit. This has no impact on me playing games on it but it would be an issue if I wanted to record direct from the GB.

To be honest, with the backlight, contrast is worse, battery life is absolutely terrible. Yes I can play in more lighting conditions, and yes it looks cool but it is not something I'd do again. There is a mod you can do which will increase the contrast (not bi-vert) but is not suitable for the average 'modder'. It involves removing the LCD drive voltage regulator and replacing it with a set of tiny SMD pots. You can then change each shade's contrast value individually. Doing this you can drive the LCD harder and make blacks blacker. This would probably have an impact on the LCD's life.

*any* loading to the regulator will increase ripple, it is in the design of a switching converter. If the idea is ultimately cleaner sound, adding an LED to the regulated 5v is not the best idea. If you want a constant brightness you can drop in a constant current supply. There's the easy way to do something, and then there is the right way.

Hi!

Few answers:

1: that is how my ready made nes flash cart works. If you just want the micro sub-board and a pin to pin wiring diagram, we can make that happen.
2:they'll be back in a week or so. Waiting on pcb's
3.Rush (the dog from megaman series)
4.That is correct
5.My old page is down. We're living in the middle of nowhere and internet is via a Yagi raised on a 4m pole. No web serving happening out here... I'll migrate it to my shop.

To be worth the time and effort, I'd be looking to sell at least 10pcs. I'll be using a CPLD for the mapper, I don't like the idea of destroying original carts for their mappers.

So if I get the interest for around 10pcs I'll begin breadboarding and start on the VHDL. It's a bit of an investment on the PCB's - gold plating isn't cheap on a board this size, plus the ROM, FRAM, RAM, CPLD's and cart cases.

I might have a solution for the gold plating which will bring the cost down a bit.

Im planning on building a custom flash cart designed to run Neil's ROMs. It'll either be USB direct into the cart to update the rom and load/save .sav files, or that will be handled via a dedicated cart flasher/dumper. It depends if people are happy to pay the extra to have it all rolled into one unit.

It'll have the standard multi-region CIC, gold plated fingers, FRAM which means no battery.

I'm aiming at $45 for the cart or $60 with integrated USB.

Any interest? Thoughts?

Email me the ROMs and I'll give them a try