Connecting a arduino pro mini 5v to a 42v LED driver power supply

Projects General Guidance
1

Hi as says in the title I am wishing to connect an arduino pro mini 5v to a 42v LED driver and I am hoping I can get some feedback before I do.

My idea is as follows:

LED driver with 60W 42v output
Connected to 50W LED lights (it has an output connector at the end to allow daisy chaining of more lights)
LM2596HV step down converter adjusted to 5v output connected to the output connector of the LED light
Arduino Pro Mini 5v

Will this work? Or are LED driver sensitive to current draw of LM2596HV + Arduino Pro mini?

My intentions are to add a thermistor to the pro mini and measure LED temperature.

Thanks for advice.

2

Should work.

1 Like
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DAnke Shon

4

Is it a constant current or constant voltage LED driver?

5

As far as I know it is a dimmable 42v led driver with 1-10v/PWM dimmer option (meanwell LPF 60D 42). Would this cause issue with LM2596HV?

6

Yes

7

yikes

8

what if I don't use the dimmer?

9

It's a constant current driver.
You should not connect anything other than LEDs to the output, dimming or not

2 Likes
10

nice info thanks. I will use an external 5v supply.

11

Good idea

12

Connect the transistor of an opto coupler to Dim(+) and Dim(-) of that LED driver.
Then drive the opto LED ( with CL resistor) from an Arduino PWM pin.
Leo..

1 Like
13

yes. I would like to control dimming using the arduino eventually, and use thermistor to measure led temperature and have arduino dim led if temperature is too high.

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