deswong
Sep 29, 2007, 06:06 AM
I finally pulled apart my DN Power LiPo Balance Charger and found that there are two LED areas marked on the pcb.
Taking voltage measurements of both areas individually resulted in 0V, not good.
But, looking at the board more closely, the LED areas are actually connected in series!
So taking a voltage measurement without load I read 12V.
I took the plunge without further testing and a big leap of faith and installed two 5mm White LEDs into these areas marked on the pcb, roughing up the LEDs smooth surface before installation to diffuse the lighting a lot better.
All is good! :D
The unit now has a white backlight, although a bit brighter to the right of the display, but good for future plans to be able to go dawn flying and making the display so much easier to see when charging in pre-dawn conditions!
So hopefully this post has inspired you to play wth your DN charger and add the LEDs for backlighting. All the other electronics has been done, just need to put the two LEDs in the spots denoted on the pcb and you're done!
Des.
Taking voltage measurements of both areas individually resulted in 0V, not good.
But, looking at the board more closely, the LED areas are actually connected in series!
So taking a voltage measurement without load I read 12V.
I took the plunge without further testing and a big leap of faith and installed two 5mm White LEDs into these areas marked on the pcb, roughing up the LEDs smooth surface before installation to diffuse the lighting a lot better.
All is good! :D
The unit now has a white backlight, although a bit brighter to the right of the display, but good for future plans to be able to go dawn flying and making the display so much easier to see when charging in pre-dawn conditions!
So hopefully this post has inspired you to play wth your DN charger and add the LEDs for backlighting. All the other electronics has been done, just need to put the two LEDs in the spots denoted on the pcb and you're done!
Des.