DMG Battery Gauge (v2)

$16.00

With this device you can you can monitor your Gameboy DMG’s LiPo battery or rechargeable AA batteries with RGB LEDs! It’s positioned just below the screen, the mode (AA/LiPo), LED brightness and colour are adjustable using the buttons (the colour applies to all LEDs).

Soldering is required. You need to supply your own wire. There is a known issue where the LEDs will quickly flash when the system is powered on. Consumes about 5.5mA on the lowest brightness and 15mA on the highest brightness.

Questions? Jump on our Discord server where we and other users can help you or contact us via Twitter.

Build to order (usually 1-2 weeks before it ships)

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Description

How to use

Brightness
Press the left or right button to increase or decrease the brightness when on the default LED colour (2 red, 3 blue, 3 green).

Change mode
Change between the default LED colour and your custom colour by holding the left button for 1 second and releasing the button.

Customise the colour and changing battery measuring mode AA/LiPo
– Hold the right button for 1 second and release.
– A red LED will appear on the right, you can press the left/right button to adjust the red LED brightness. Hold the right button for 1 second and release to proceed to the next colour of green and then blue.
– After blue, either 2 or 4 red LEDs will appear on the left side, they indiciate the mode. 2 for AAs and 4 for LiPo. Hold the right button once more and release to go back to normal.

Installation (v2)

Have the 3 wires go through the middle hole where the capacitor is and use blu-tack or double sided tape on the capacitor/hole to hold it in place. Take care as you will be placing it on the LCD ribbon cable.

Connect 5V to the cartridge header pin 1 (red cable)
Connect GND to the battery negative terminal (blue cable)
Connect BATT to battery positive terminal (white cable)

LiPo – Voltage when LEDs turn on
LED1 – 3.15v
LED2 – 3.3v
LED3 – 3.4v
LED4 – 3.5v
LED5 – 3.6v
LED6 – 3.75v
LED7 – 3.9v
LED8 – 4v

Rechargeable AA (1.2v) – Voltage when LEDs turn on
LED1 – 3.9v
LED2 – 4.0v
LED3 – 4.1v
LED4 – 4.2v
LED5 – 4.5v
LED6 – 4.6v
LED7 – 4.7v
LED8 – 4.8v

Additional information

Weight 2 g
Battery to monitor

LiPo, Rechargable AA (1.2V)

Installation (old versions)

Installation (v1.1)

Take care as you will be placing it on the LCD ribbon cable.

Rechargable AAs / Non-fixed output LiPo

Fixed output LiPo packs

Installation (v1.0)

Connect 5V to the cartridge header pin 1 (red cable)
Connect GND to the battery negative terminal (blue cable)
Connect BATT to battery positive terminal (white cable)

Have the 3 wires go through the middle hole where the capacitor is and use blu-tack or double sided tape on the capacitor/hole to hold it in place. Take care as you will be placing it on the LCD ribbon cable.

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