Comments on: Universal High-Power LED Driver Kit & PCB https://blog.theledart.com/blog/universal-high-power-led-driver-kit-pcb-available/ Art and Technology are Friends Tue, 18 Aug 2020 10:01:26 +0000 hourly 1 http://wordpress.org/?v=3.9.1 By: The LED Artist https://blog.theledart.com/blog/universal-high-power-led-driver-kit-pcb-available/comment-page-1/#comment-4991 Thu, 14 Mar 2013 16:08:27 +0000 http://www.theledart.com/blog/?p=337#comment-4991 Do you mean PWM or control voltage input? Well Universal Controller doesn’t have them. However if you are handy you can inject 0-5V control voltage into the center pin of the pot to control dimming.

Aki

]]> By: Rian https://blog.theledart.com/blog/universal-high-power-led-driver-kit-pcb-available/comment-page-1/#comment-4990 Thu, 14 Mar 2013 14:22:55 +0000 http://www.theledart.com/blog/?p=337#comment-4990 Does the driver have a voltage input for an incoming signal as well a power supply? I am trying to amplify and drive a 0~5V serial signal up to 16V; which is the turn on voltage for my LED’s. Any help would be appreciated.

]]> By: The LED Artist https://blog.theledart.com/blog/universal-high-power-led-driver-kit-pcb-available/comment-page-1/#comment-4900 Sat, 09 Mar 2013 16:35:20 +0000 http://www.theledart.com/blog/?p=337#comment-4900 Universal Driver uses “SPI like” communication. It’s not exactly SPI, but you can communicate using SPI with some effort. The unit uses only two pins: data and clock. The lines are normally pulled up by resistors so that switches or another Universal Driver can pull them low. This is how I implemented the half-dupe (or bi-directional) communication with just two lines. It’s a hybrid between I2C and SPI I guess.
Please read the source code for the details.
As a pointer, those two lines need to be high when idle. So maybe use SPI mode 3? If you pull any one of them low for more than 47 milliseconds, the controller think that the button is pushed.

Aki

]]> By: muk https://blog.theledart.com/blog/universal-high-power-led-driver-kit-pcb-available/comment-page-1/#comment-4886 Fri, 08 Mar 2013 16:00:44 +0000 http://www.theledart.com/blog/?p=337#comment-4886 received one of the kit and its perfectly designed and super easy to built. great job!
but… i have an issue with the SPI Interface. i don´t get it right. SPI usually uses 4 wire connection. http://en.wikipedia.org/wiki/Serial_Peripheral_Interface_Bus
I only used MasterOut (MOSI) on my side connected to SPI_DAT and the SCK for SPI_CLK.
I am using Mode 1.

and they are communicating somehow, but super unstable. sometimes the status led of the kit starts to blink (config mode?), sometimes it only reacts after a delay. sometimes i have to go back and forth with the 8bit Value in order to raise the brightness… never really the way i want. any idea?

my SPI has 4MHz ClockSpeed and is coming from an arduino http://arduino.cc/en/Reference/SPI

mukos gracias

]]> By: The LED Artist https://blog.theledart.com/blog/universal-high-power-led-driver-kit-pcb-available/comment-page-1/#comment-4671 Tue, 26 Feb 2013 06:40:40 +0000 http://www.theledart.com/blog/?p=337#comment-4671 The output voltage from this driver can reach upward of 30V when you connect 10 white or blue LEDs in serial. So if your LED string’s forward voltage is about 15V, that should work.

Aki

]]> By: AU_Rez https://blog.theledart.com/blog/universal-high-power-led-driver-kit-pcb-available/comment-page-1/#comment-4668 Tue, 26 Feb 2013 05:00:33 +0000 http://www.theledart.com/blog/?p=337#comment-4668 I am trying to drive lamps with a turn on voltage of 15V. Is the maximum output voltage for the LED driver 6.6V?

]]> By: The LED Artist https://blog.theledart.com/blog/universal-high-power-led-driver-kit-pcb-available/comment-page-1/#comment-4585 Wed, 20 Feb 2013 20:16:37 +0000 http://www.theledart.com/blog/?p=337#comment-4585 What I mean by Universal LED Driver not being the right tool for strobe is that this driver implements “soft-on”. When this driver turns on the LEDs, the unit ramps up the current level from minimum until it reaches the set current. This “soft-on” is opposite of what you want in strobe driver.
That being said, for human eye this soft-on is still instantaneous, so might still be practical. Only experiments can tell.

Again using an external uC won’t change the situation above. (and I don’t think external uC is needed.)

Aki

]]> By: muk https://blog.theledart.com/blog/universal-high-power-led-driver-kit-pcb-available/comment-page-1/#comment-4579 Wed, 20 Feb 2013 12:04:11 +0000 http://www.theledart.com/blog/?p=337#comment-4579 sorry for being obtrusive, but i want to realize this project. why you think its not the right tool? because of changing the program is too complicated? i am programming on arduino since some years and have some programming/electronic background from a technical education. i just had a short check on the asm file (with text editor only) and it doesnt seem to be that complicated even tough i have to get into the reading, because i am used to Java of course.
what IDE to use with asm files?
what if i use another uC and switch the brightness from 0 to the max value (potentiometer) via SPI? fast enough?

]]> By: The LED Artist https://blog.theledart.com/blog/universal-high-power-led-driver-kit-pcb-available/comment-page-1/#comment-4559 Mon, 18 Feb 2013 22:18:33 +0000 http://www.theledart.com/blog/?p=337#comment-4559 Not impossible, but not easy. External uC is not needed but you will need to modify the firmware to do what you want to do.
I just don’t think this driver is the right tool for your purpose.

]]> By: muk https://blog.theledart.com/blog/universal-high-power-led-driver-kit-pcb-available/comment-page-1/#comment-4557 Mon, 18 Feb 2013 19:26:07 +0000 http://www.theledart.com/blog/?p=337#comment-4557 It is not for photographic reason, but for light installation (direct human eye perception not through a camera) which should strobe around 100 – 500Hz (sometimes faster, but not necessarily) and in addition should be dimmable.
Possible?

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