Hi ArtArtF wrote:
2)
Auggie can only send numbers from 0-100 as power. So when you limit it to 32% by the laser power
in auggie you can get only 32 different PWM levels. This is unfortunate for high power lasers as it reduces the
resolution as you lower the laser power %. I use an arduino to receive the pwm and allow me to adjust its
% before it goes to the laser. The arduino can subdivide in 100 steps. SO I set laser power to 100%, then
tell the arduino to adjust down to 20%. The output is then 100 steps from 0 - 20 instead of only the 20
steps Auggie can do by itself. The arduino project is published on this board as well if youd like to make
a similar board. This allows you to override the 0-100 steps the pokeys can do to be 100 steps of any %.
So this arduino takes in 0-100% pwm from auggie set to 100%, and outputs 0-xx% as set on a lcd
connected to the arduino and sends a new pwm to the laser.
You can see the project in the auggie topic I think under pwm control.
Ahh ok, i got it now, you use the trick to get a good resolution. I never work with arduino still i was developer for years on dsPIC products a while ago. I think i have a board here with one microcontroller , i can write a small code for that in a moment . I never think on that . Thanks.
Right now is midnight here , so i need to sleep , but tomorrow i will do some test .
I will let you know.
Bobby