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tech:laser [2015/01/01 22:10] – bullartech:laser [2026/08/12 12:15] (current) – external edit 127.0.0.1
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 ===Laser Power=== ===Laser Power===
 My laser cutter hosted a MY JG40W power supply with PWM power control input. My laser cutter hosted a MY JG40W power supply with PWM power control input.
-{{:tech:laserpsu.png?direct&300|}}+{{:media:tech:laser:laserpsu.png?direct&300|}}
  
 I used the following connectors: I used the following connectors:
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 The board is called 6C6879-LEDPAD-A. It was replaced by an I2C-Panel of LAOS. The board is called 6C6879-LEDPAD-A. It was replaced by an I2C-Panel of LAOS.
  
-{{:tech:ledpad.png?direct&300|}}+{{:media:tech:laser:ledpad.png?direct&300|}}
  
 The new control panel The new control panel
 I added a LED showing the laser activity and a button to trigger the laser. The rest is supported by I2C-Panel. The front design file (SVG) is attached. I added a LED showing the laser activity and a button to trigger the laser. The rest is supported by I2C-Panel. The front design file (SVG) is attached.
  
-{{:tech:img_0129.jpg?direct&300|}}+{{:media:tech:laser:img_0129.jpg?direct&300|}}
  
 Signal integrity issue Signal integrity issue
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 The picture shows the signal at optocoupler (reference in yellow is the transistor output w/o optocoupler). The picture shows the signal at optocoupler (reference in yellow is the transistor output w/o optocoupler).
  
-{{:tech:pwm_signal_integrity.png?direct&500|}}+{{:media:tech:pwm_output:pwm_signal_integrity.png?direct&500|}}
  
 Therefore I decided to build a level shifter unit. With an op-amp (TLC271) the level at the optocoupler is judged at approx. 3V (with few 0.1V hysteresis). A following schmitt-trigger Therefore I decided to build a level shifter unit. With an op-amp (TLC271) the level at the optocoupler is judged at approx. 3V (with few 0.1V hysteresis). A following schmitt-trigger
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 The level shifter soldered on a small PCB: The level shifter soldered on a small PCB:
  
-{{:tech:img_0130.jpg?direct&300|}}+{{:media:tech:laser:img_0130.jpg?direct&300|}}
  
 New exhaust hose adapter New exhaust hose adapter
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 The part can be found on http://www.thingiverse.com/thing:454820 The part can be found on http://www.thingiverse.com/thing:454820
  
-Exhaust hose adapter  Foam tape side  Duct join side+{{:media:tech:laser:img_0445.jpg?direct&200 |}} {{:media:tech:laser:img_0443.jpg?direct&200 |}} {{:media:tech:laser:img_0444.jpg?direct&200 |}} 
  
-My Laser cutter after all modifications (until m/o Aug 2014)+----
  
-{{:tech:img_0133.jpg?direct&300|}}+**My Laser cutter after all modifications (until m/o Aug 2014)** 
 + 
 +{{:media:tech:laser:img_0133.jpg?direct&300|}}
  
  
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