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September 25, 2008
Product PRT-12699 |
about a week ago
Agreed. I have a few myself. I think that this has advantages over the proto-board for size, less soldering, and jamming stuff in to single holes.
Rev2 should include a partial row of pins offset to support a header row for an Arduino. This will be really awesome.
News - Enginursday: Yeah, I foun… |
about 2 weeks ago
Use a generator and output the power to two motors, one for each track of a form of ATV.
News - February Caption Contest |
Let them try to photo bomb me now! Do not look away!
News - According to Pete: Curren… |
about 2 months ago
And therein lies the problem. I need adjustable LED brightness via adj. current or PWM at the above 12v and 1000mA and equally parallel across three LED.
Three DC-DC converters require too much footprint. I can potentially use an off the shelf PWM LED driver for one LED with my 6S LiPo requirement. My hope is to do the current mirror.
Is there another way to reliably run three LED’s in parallel without three separate DC-DC converters? Ultimately, if doing a current mirror as suggested above, if the first LED fails and no longer draws current, then the whole system fails, but I can live with that because i don’t kill all LEDs when one fails open because they are in true parallel.
I need to prototype this… where is the time!
For the comment by member # , I believe the intent of the comment about parallel LEDs was to use a constant current source on the first LED and use a current mirror on the second LED to ensure that an upset in the circuit doesn’t cause one LED to source current away from other parallel LEDs and burn out or if a LED fails, the other LEDs burn out from excess current. I was looking for something similar too. I was recently looking to drive three Cree MK-Rs in parrallel (each require 12.0v @ 1000mA for what I want to do) and I wanted to use a single DC-DC converter from a 6S hobby LiPo pack.
Product DEV-12053 |
about 3 months ago
Will it support https?
News - November Caption Contest |
about 4 months ago
This is what happens when Pete sticks his tongue in an electrical socket… he wanted to be more eccentric!
News - October Caption Contest |
about 5 months ago
Robert is in his alternate universe, where October only has 29 days. (Seriously, Wednesday, November 1st? Does this contest end in 2017?)
No public wish lists :(