Gameboy Zero project using standard AA batteries

[Muon]

Came across this Gameboy Zero by youtuber GreatScott, thought I'd share. For now it's above my skill level, but may be useful to some of the more skilled hobbyists here. It's very tidy, and he manages to run it using standard AA batteries, saving the original battery compartment..

Part 1: https://youtu.be/_MtN_s4tVK0
Part 2: https://youtu.be/bhWTfATkg6w

Instructables link for the project..
http://www.instructables.com/id/DIY-Ras ... e-Console/

[Rolen47]

Cool. It's exciting that GreatScott made one of these, he has a lot of great videos. I really like his custom printed backplate. I did something similar but used perfboard instead.

[ABH]

If anyone want to use AA batteries :
https://www.piborg.org/battborg

[Mischief]

If anyone want to use AA batteries :
https://www.piborg.org/battborg

I looked at this for my build but it requires 8AA (needs at least 7v) batteries to work 4AA batteries won't give enough voltage (4.8V with rechargeable and 6V with regular) to get it working

[sotasystems]

If anyone want to use AA batteries :
https://www.piborg.org/battborg

I looked at this for my build but it requires 8AA (needs at least 7v) batteries to work 4AA batteries won't give enough voltage (4.8V with rechargeable and 6V with regular) to get it working

This batteries will have 1.425 Volts when fully charged and 1.20 Volts when depleted. Meaning you have a voltage of 5.7-4.8 Volts when using 4 batteries.

Why do you need 7 Volts, though? I thought most, if not all of the components need 5 Volts.
Somehow stepping it down to 5 Volts will be inefficent as you will in some way always have an energy loss. That energy loss is usualy dissipated heat by step-down circuits.

[Mischief]

If anyone want to use AA batteries :
https://www.piborg.org/battborg

I looked at this for my build but it requires 8AA (needs at least 7v) batteries to work 4AA batteries won't give enough voltage (4.8V with rechargeable and 6V with regular) to get it working

This batteries will have 1.425 Volts when fully charged and 1.20 Volts when depleted. Meaning you have a voltage of 5.7-4.8 Volts when using 4 batteries.

Why do you need 7 Volts, though? I thought most, if not all of the components need 5 Volts.
Somehow stepping it down to 5 Volts will be inefficent as you will in some way always have an energy loss. That energy loss is usualy dissipated heat by step-down circuits.

No idea I didn't create it, all I know is it won't run on 4AA batteries as I had emailed him/her/them to ask and was told the above.

[Lphillimore]

So to clarify, is there any reason that 4x AA batteries cant be used rather than trading out for an aftermarket battery?

Space issues perhaps?

I note that vnman uses AA's in his picture advising on Joystick location here:

http://www.sudomod.com/forum/viewtopic.php?f=8&t=1420

Cheers,

[kendon]

I note that vnman uses AA's in his picture advising on Joystick location here:

http://www.sudomod.com/forum/viewtopic.php?f=8&t=1420

Cheers,

These are Trustfire, and therefore highly likely not AA but 14500 3,7V LiIon batterys in AA size.

Like these: http://www.dx.com/s/14500?category=400

Haven't ruled these out yet, wired in parallel should give ~3000mAh at 3,7V.