IndstrlDsgn
New Member
Hey guys, first post here on the forums. Thanks to all for creating and contributing to this great resource.
Somewhat noob questions I'm guessing. Supposing this is a softball question for you guys.
I recently completed a build for client that was my second of this type. I've included pics of both. The 40k board is the most recent and I'm having an issue with the power supply. One a Star Wars Legion Hoth game board and the other a Warhammer 40k display / gaming board.
Both suffer from a less than satisfactory power supply solution. The power supply needs to be portable (used without access to electricity for extended periods), rechargeable via USB, min. 5v to avoid re-wiring the board. 2200mAh or there about.
A) The Hoth board used a cheapie flashlight I hacked up. Wired in series, 12 white LED's so it needed the voltage.
B) The 40K board used a 5v 2200mAh MyCharge USB rechargeable phone power supply. Wired in parallel with two yellow / orange LED's on each leg. Total of 20 LED's. Mix of 10 yellow and 10 orange all same forward voltage and power consumption. Wiring schema is USB wire from output, with end cut off. All grounds go to common lug and power all go to common 5v leg of USB. The green and white wires from USB are not used. They appear to have a constant 0.3v on them. Useful for the fix? The issue I need help with is the power supply going to sleep when unplugged from the wall. It still has a charge but can only be "woken" by briefly shunting pos to neg.
Replace it with a less high tech solution is my initial impulse but not sure if this is a common "feature" on all USB phone chargers. My second impulse was to look at drone or RC battery packs but for ease of client use it needs to be plug-n-play for charging. I can't expect him to babysit the charging to unplug it when it's done charging. It needs to shut itself off. Also it seems all RC solutions are low mAh and only capable of 20-30 minutes or run time. Perhaps that's rated on standard RC use and not my relatively low mAh consumption of LED's.
And of course the solution needs to be less than no money if possible. Cheaper the better. preferably under $10-$15.
Is there a commonly known "go-to" for such solutions? If so what would it be?
Thank you!
Somewhat noob questions I'm guessing. Supposing this is a softball question for you guys.
I recently completed a build for client that was my second of this type. I've included pics of both. The 40k board is the most recent and I'm having an issue with the power supply. One a Star Wars Legion Hoth game board and the other a Warhammer 40k display / gaming board.
Both suffer from a less than satisfactory power supply solution. The power supply needs to be portable (used without access to electricity for extended periods), rechargeable via USB, min. 5v to avoid re-wiring the board. 2200mAh or there about.
A) The Hoth board used a cheapie flashlight I hacked up. Wired in series, 12 white LED's so it needed the voltage.
Cons: not rechargeable, no wall plug option.
Pros: Run time is outstanding due to wiring and mAh of the D cell batteries. Reliable and low tech.
B) The 40K board used a 5v 2200mAh MyCharge USB rechargeable phone power supply. Wired in parallel with two yellow / orange LED's on each leg. Total of 20 LED's. Mix of 10 yellow and 10 orange all same forward voltage and power consumption. Wiring schema is USB wire from output, with end cut off. All grounds go to common lug and power all go to common 5v leg of USB. The green and white wires from USB are not used. They appear to have a constant 0.3v on them. Useful for the fix? The issue I need help with is the power supply going to sleep when unplugged from the wall. It still has a charge but can only be "woken" by briefly shunting pos to neg.
Replace it with a less high tech solution is my initial impulse but not sure if this is a common "feature" on all USB phone chargers. My second impulse was to look at drone or RC battery packs but for ease of client use it needs to be plug-n-play for charging. I can't expect him to babysit the charging to unplug it when it's done charging. It needs to shut itself off. Also it seems all RC solutions are low mAh and only capable of 20-30 minutes or run time. Perhaps that's rated on standard RC use and not my relatively low mAh consumption of LED's.
And of course the solution needs to be less than no money if possible. Cheaper the better. preferably under $10-$15.
Cons: charger goes into sleep mode after a minute or two of use. Only stays on when plugged into wall wart. Worried it's tripping a fail safe for some unknown reason but it's so consistent it seems intentionally self-regulating somehow. Detecting power use and shutting off assuming a phone is being charged and has an issue with it?
Pros: rechargeable, cheap, regulates it's own charging
Pros: rechargeable, cheap, regulates it's own charging
Is there a commonly known "go-to" for such solutions? If so what would it be?
Thank you!
Last edited:
