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ldgraphy [2020/11/07 21:00] – yairldgraphy [2020/11/09 12:46] – yair
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 first go\\ first go\\
 {{ldr-003.mp4}} {{ldr-003.mp4}}
 +
 +===TODO===
 +find out what's up with the Y axis galvo. it gets very hot when on and doesnt move. 
  
 ===hardware=== ===hardware===
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 {{:pt-a40.pdf|manual for PT-A40}} {{:pt-a40.pdf|manual for PT-A40}}
  
-**Basic Tuning** +**Basic Tuning**\\ 
-Basic adjustments +Basic adjustments\\ 
- The driver board comes already pre adjusted for 3 projection angle and needs to be set up for +The driver board comes already pre adjusted for 3 projection angle and needs to be set up for\\ 
- the galvo only in small areas. Every galvo is different, so 3 of them adjustments are needed. For +the galvo only in small areas. Every galvo is different, so 3 of them adjustments are needed. For\\ 
- this, the ILDA test pattern is used ,also a setup of the galvos in XY with a laser . If you need to +this, the ILDA test pattern is used ,also a setup of the galvos in XY with a laser . If you need to\\ 
- tune the driver faster to smaller angles, follow the procedure below . Also if the driver is totally +tune the driver faster to smaller angles, follow the procedure below . Also if the driver is totally\\ 
- deadjusted , this will be the procedure to retune it :+deadjusted , this will be the procedure to retune it :
  
   * Size, Servo-Gain, Damping und HF-Damping are adjusted counter clockwise to their left zero position. Now turn LFD 5 full rounds clockwise to right.   * Size, Servo-Gain, Damping und HF-Damping are adjusted counter clockwise to their left zero position. Now turn LFD 5 full rounds clockwise to right.
   * Connect computer with ILDA test pattern, run it at approx. 20kpps.   * Connect computer with ILDA test pattern, run it at approx. 20kpps.
   * Power on the amplifiers.   * Power on the amplifiers.
-  * Slowly open the servo gain (clockwise). The mirror of the galvo should move now to its middle position. If yes, turn two rounds clockwise. +  * Slowly open the **servo gain** (clockwise). The mirror of the galvo should move now to its middle position. If yes, turn two rounds clockwise. 
-  *  Slowly open the size until you see the galvo moving. +  *  Slowly open the **size** until you see the galvo moving. 
-  *  Increase servo gain until you see overshoots. Correct it with LFD. +  *  Increase **servo gain** until you see overshoots. Correct it with **LFD**. 
-  *  Decrease undershoots by opening the HFD pot slightliy clockwise. Remove gain/LFD procedure and correct with HFD, until you the picture looks satisfying. Carefully fine tune the driver. The better your fine tuning is, the faster is the scanspeed.+  *  Decrease undershoots by opening the **HFD** pot slightly clockwise. Remove **gain/LFD** procedure and correct with **HFD**, until you the picture looks satisfying. Carefully fine tune the driver. The better your fine tuning is, the faster is the scanspeed.
   * Increase speed of test patterns and readjust for optimized picture   * Increase speed of test patterns and readjust for optimized picture
  
 +{{:pasted:20201107-194611.png?500}}
 +
 +what's inside?
 +
 +{{youtube>HIBH55cbfLM?medium}}
  
 +{{:pasted:20201109-104602.png}}
 ===software=== ===software===
 [[https://gitlab.com/greenhouseinfo/max-svg-laser-cutter|greenhouseinfo/max-svg-laser-cutter]] \\ [[https://gitlab.com/greenhouseinfo/max-svg-laser-cutter|greenhouseinfo/max-svg-laser-cutter]] \\