External power supply
From wiki.gp2x.org
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Power Requirements
The gp2x console requires a 3.3V @ 1A power supply with a very small, center grounded connector (i.e. center - outside +).
The gp2x cradle requires a 5V @ 2.5A power supply with a medium, center positive connector (i.e. center + outside -).
Commercial Products
- Supply at Play-Asia (Play-Asia is and has been backordered for this product for some time.)
- Radio Shack $39.99 (Verified; works great!) (Radio Shack does not appear to carry this product any more.)
- Radio Shack - Digital Camera Power Adapter $27.99 (Verified; works great! Even supplies 5v for USB fanatics.) (Clarification: includes the necessary tip for the GP2X in the box. The tip needs to be aligned for negative polarity.)
- Radio Shack Power Bank and Battery Charger - $9.99 - (Verified, works great- be sure to get the correct adaptaplug. Even charges Ni-Mh AA batteries!)
Argos UK
With these models, line up the word TIP on the end of the wire and the -ve (minus) on the smallest connector, for the center to be ground and the outside to be positive. Push firmly all the way in to the GP2X.
DIY
- To Retro fit or make your own power supply you will need a 0.7X2.35MM plug
- Digikey Part #CP-012-ND
- Manufacturer Part #PP-012
- $0.90 @ qty one
- The following connector(s) also fit:
- Maplin DC Power Plug 0.7mm/2.5mm Part #L43AY
- 3.3V regulator that can handle 1A (I used LM1086 3.3V, 1.5A)
- Center Ground
- At 3.3V the unit draws ~380-480mA continuously (Firmware 1.0.1) Note however that programs can now take full advantage of the second core and/or tv output (which was previously limited to the video player) so this power consumption can hit ~800mA. As stated above, extra capacity should be included in any adaptor designs to provide at least 1amp to allow for current spikes.
- Later figures, for units with 2.x.x firmware and running early-2007 era apps indicate power consumption can hit 1.6A. The official GPH Power Supply supplies 2.0A peak.
Caution / First Aid
Take care the polarity of the connector is CENTER GROUNDED.
If you power the GP2X with + and - swapped just for a second only, you are likely to fry one of the voltage converters inside. It is difficult to buy, very small and not easy to replace.
(FYI: The chip is labelled U18 and has a big "LTSK" printed on it. It is a DC/DC-Converter, that delivers a fixed voltage from 2AA batteries. A LTC3402 is said to work as a replacement.)
External reference: German GP2X-Board
