If you are going to put together a PWM dimmer on top of the linear current regulator, you already have almost as many components as a proper constant-current switching regulator. Much more efficient and cheaper than using an Arduino for PWM. A constant-current switching regulator also won't have the shutter scrolling/flickering that basic PWM dimming can produce.
hi, could you check driver minimal voltage drop please? for example we power 3v LED from 3.6v lion battery. what minimal battery voltage need to driver could keep 100mA. (cant find in specification)
@@LeftyMaker based on CN5711? I saw this video, thank you. I dont like "aliexpress modules" 😄 Quality floating from order to order. Also I can make own simple LDO driver - based on tl431 and NPN transistor, hold constant current within 4.2-3.3volts with about 10-15% precision. Anyway interesting in simple one chip solution.
Can you make a video to control 3watt LEDs with Arduino with pwm ,I made one my self for my aquarium but my Knowledge is not good enough for pretty end results.
I do not really see a practical use for it. The chip doesnt know how much current i want to drive my LEDs with and in all honest i have very few projects in which the voltage to the led can vary. If i do, a 3 THT component constant current driver will do. That said, it is always good to hear abt new technology/components
![[24] How LED driver works (stepdown converter)](http://i.ytimg.com/vi/OMEWXQ42vho/mqdefault.jpg)
If you are going to put together a PWM dimmer on top of the linear current regulator, you already have almost as many components as a proper constant-current switching regulator. Much more efficient and cheaper than using an Arduino for PWM. A constant-current switching regulator also won't have the shutter scrolling/flickering that basic PWM dimming can produce.
Keep uploading, love your videos
Seriously enjoying these type of "Let's experiment with..." videos you've been putting out! ✨️💯
Very good video ❤
Such a good channel keep making videos you will be the next great scott
Probably not, but thanks for the support :)
Neat chip...
I usually use single LEDS as indicators and drive them with about 5-10mA. This chip doesn't seem to have a way to lower the current.
Nope, 15mA is the minimum. But I can see them used in signs, backlights, and white appliances like fridges
@@LeftyMaker Thanks for the update! Yes, that seems to be the market for these devices.
a mosfet and a protentiometer
hi, could you check driver minimal voltage drop please? for example we power 3v LED from 3.6v lion battery. what minimal battery voltage need to driver could keep 100mA. (cant find in specification)
You need 2.5V extra for the driver to work
@@LeftyMaker aaah of course, its only 2 pin... and need voltage for internal logic.
it's sad that it's not usable for single batt.
@@alexvas603 I recently made a video about making an LED flashlight. The driver I used there is good for a Li-ion battery and over 1W of power
@@LeftyMaker based on CN5711? I saw this video, thank you. I dont like "aliexpress modules" 😄 Quality floating from order to order. Also I can make own simple LDO driver - based on tl431 and NPN transistor, hold constant current within 4.2-3.3volts with about 10-15% precision. Anyway interesting in simple one chip solution.
Can you make a video to control 3watt LEDs with Arduino with pwm ,I made one my self for my aquarium but my Knowledge is not good enough for pretty end results.
Hm, I may eventually, but I don't know when. Got plenty on my to-do list and little time. Does yours not work, or is it just not pretty?
@@LeftyMaker thanks for replying , it works it's not pretty ,but thanks again maybe another time.
I do not really see a practical use for it. The chip doesnt know how much current i want to drive my LEDs with and in all honest i have very few projects in which the voltage to the led can vary. If i do, a 3 THT component constant current driver will do. That said, it is always good to hear abt new technology/components
The simpliest LED driver - is resistor
A resistor works, but it is not a driver
Definition of driver please?
You keep mentioning that the driver is not very efficient. What would be an example of an efficient driver instead?
There's the AL8807. It has up to 96% efficiency, but it is more complex than this to use.
@@LeftyMaker interesting, thanks for the pointer! I'll look it up
The simplest led driver is a resistor... so down vote for the lies.
As I said in a previous comment, a resistor is not a driver. It will not maintain a constant current like a driver would.