Ok Paul, thanks very much.
I was thinking it would just connect to an Arduino running GRBL with the TTL+ connected to pin 11 on the Arduino which would supply the 0 to 5v PWM signal,
and the TTL- connected to a Ground on the Arduino, using the seperate TTL- pad on the driver board and not the...
That's correct but irrelavent really. As I am more concerned about why there are 2 "TTL -" pads, and not the orientation of the images.
They are continuous, but the "-/gnd" for the supply and the "LD -" are not.
I also found the description for the Board:
Laser diode driver board
May be it's my age but I'm a bit confused with a laser diode driver I just bought.
This is the one:
In the image on the left it shows "TTL -" on the bottom right pad of the board next to the Laser Diode "-"
In the image on the right it shows the back of the board and shows "TTL -" that...
Although I have posted here before, I forgot to add a post here, bit rude I know.
I live in Leicestershire in the UK.
I'm 59 married with 5 kids and 7 grandkids.
Hobbies are electronics (any kind) and repairing pc's/phones/tv's/powertools/or anything that breaks really, even...
Thanks for the reply.
It's actually a multiturn pot (the blue one with the gold screw) not a 1 turn, so it would only increase the current very gradually.
I don't see how it could hurt the laser diode but was'nt sure. I asked because I've never seen anyone using the multimeter method.
To me it...
Just wondered if: With the current turned all the way down to start with and the voltage set somewhere between min and max of the diodes rating, is it ok to adjust the laser diode current using a multimeter in series with the diode, instead of using a string of diodes and resistor, or does it...
Hi BowtieGuy. Thanks for the welcome.
I did see the dummy load set procedure but wanted to check here as well.
The voltage trimmer is because the driver can be used for other things as well as laser driver.
If anyone is thinking about buying this type of driver board they should check the...
Thanks for clearing that up. I'm greatful for any help I can get. The more I know the less chance I have of getting it wrong.
I have made a laser engraver using the method that a lot of people use, especially on Instructables website.
I used the LM317 method of a constant current device for...
Thanks very much Diachi.
May be I should'nt have called it a constant current driver.
It's one of these:
2A Laser Diode Driver for 405, 450, 520, 635 and 660nm Diodes TTL Modulation, 12V (V2) - OdicForce
Hi everyone. Just joined the forum and this is my first post.
I've been watching the forum for quite a while now and decided to join as there seems to be a wealth of information here and a lot of knowledgeable helpful people.
I would like to ask for a little info about setting up a dummy load...