17-Apr-2024, 02:53 PM
As per my post about the dual lens config here: https://intofpv.com/t-trying-out-some-of...#pid170170
I went about attempting to add some narrow beam leds to improve my depth of view.
I had the challenge of using what I had, which was two 4V, 3W leds with a 15deg plastic lens The ring led is rated at 12V (it has 16 discrete leds).
I need to drive a 12V (ring led) and 4V rail (the two 4v 3w leds in parallel). This was tricky with what I had on hand. I wanted to use another dcdc convertor (12v) I had which has an enable pin. I like being able to turn the leds on/off via the PINIO function and a switch on the TX.
Due to constraints on one of the dcdc boards (needed a 6V input) I couldn't get the goal config of having a "high beam" setup, lol.
On a 3 position switch on the TX I would of liked to of pulled off the following:
ie: switch pos 0 = both leds off, switch pos 1 = ring led on, switch pos 2 = ring + high beam leds
Anyways, I couldn't do that (yet!) so I'm going with two of the same DCDC boost convertors, one set to output 12V, one set to output 8V. This was the best I could do. Going with the two 4V/3W leds in series to be powered by the 8V board.
The 15deg leds are a cold white which is in contrast to the warm light from the ring leds. I did this to be able to discern what leds are lighting up what area. Hoping that the middle picture, longer distance to object scenario gets a better response with this setup.
The power figures are scary. On the bench, idle the quad draws approx 450mA at 3.8W for 2S power source. When I connect the leds this jumps up to 1.8A at 16W!
Hopefully get to test tomorrow night.
I went about attempting to add some narrow beam leds to improve my depth of view.
I had the challenge of using what I had, which was two 4V, 3W leds with a 15deg plastic lens The ring led is rated at 12V (it has 16 discrete leds).
I need to drive a 12V (ring led) and 4V rail (the two 4v 3w leds in parallel). This was tricky with what I had on hand. I wanted to use another dcdc convertor (12v) I had which has an enable pin. I like being able to turn the leds on/off via the PINIO function and a switch on the TX.
Due to constraints on one of the dcdc boards (needed a 6V input) I couldn't get the goal config of having a "high beam" setup, lol.
On a 3 position switch on the TX I would of liked to of pulled off the following:
ie: switch pos 0 = both leds off, switch pos 1 = ring led on, switch pos 2 = ring + high beam leds
Anyways, I couldn't do that (yet!) so I'm going with two of the same DCDC boost convertors, one set to output 12V, one set to output 8V. This was the best I could do. Going with the two 4V/3W leds in series to be powered by the 8V board.
The 15deg leds are a cold white which is in contrast to the warm light from the ring leds. I did this to be able to discern what leds are lighting up what area. Hoping that the middle picture, longer distance to object scenario gets a better response with this setup.
The power figures are scary. On the bench, idle the quad draws approx 450mA at 3.8W for 2S power source. When I connect the leds this jumps up to 1.8A at 16W!
Hopefully get to test tomorrow night.