Marlin firmware as laser cutter August 12, 2015 09:05PM |
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Re: Marlin firmware as laser cutter August 13, 2015 12:30PM |
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Re: Marlin firmware as laser cutter August 16, 2015 07:22PM |
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Re: Marlin firmware as laser cutter January 13, 2016 01:09PM |
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Re: Marlin firmware as laser cutter January 13, 2016 01:37PM |
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Re: Marlin firmware as laser cutter January 13, 2016 03:42PM |
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Quote
VDX
... AFAIK the fan output is a PWM signal, so with a multimeter you'll see the averaged voltage only.
You need an oszilloscope to see/measure the exact timings and voltage levels ...
Re: Marlin firmware as laser cutter January 13, 2016 04:15PM |
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Re: Marlin firmware as laser cutter January 13, 2016 05:44PM |
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Re: Marlin firmware as laser cutter January 13, 2016 09:47PM |
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Re: Marlin firmware as laser cutter January 13, 2016 10:42PM |
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Re: Marlin firmware as laser cutter January 14, 2016 03:26AM |
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#if MB(RAMPS_13_EF || MB(RAMPS_13_EFF) || MB(AZTEEG_X3) || MB(AZTEEG_X3_PRO) #define FAN_PIN 6 // was D9 #else #define FAN_PIN 4 // IO pin. Buffer needed #endif
// Increase the FAN pwm frequency. Removes the PWM noise but increases heating in the FET/Arduino //#define FAST_PWM_FANin configuration.h to get smoother grayscale results.
Re: Marlin firmware as laser cutter January 14, 2016 03:37AM |
Registered: 8 years ago Posts: 5,232 |
Quote
I presume anyone who has this working is using an adjustable current TTL enabled laser diode driver am I right? That would allow using the D9 block to power the laser. I also presume with such driver the voltage of D9 being higher than whats typically recommended isn't too big of a problem as long as you have proper cooling on the driver and diode right?
Re: Marlin firmware as laser cutter January 14, 2016 01:06PM |
Registered: 8 years ago Posts: 10 |
Quote
o_lampe
#if MB(RAMPS_13_EF || MB(RAMPS_13_EFF) || MB(AZTEEG_X3) || MB(AZTEEG_X3_PRO) #define FAN_PIN 6 // was D9 #else #define FAN_PIN 4 // IO pin. Buffer needed #endif
If you want to use M106/M107 commands with a 5V signal level, search Marlins code for "EFB" in all tabs until you find this piece of code in pins.h.
Change it to any servo pin you like ( mine is at pin 4 ) and connect it to the TTL input.
I also defined
// Increase the FAN pwm frequency. Removes the PWM noise but increases heating in the FET/Arduino //#define FAST_PWM_FANin configuration.h to get smoother grayscale results.
Be aware that with red DVD LDs, grayscaling is almost impossible. ( at least on light colored surfaces )
Maybe if you find a program that allows to scale the PWM between user-selectable XXX-YYY instead of 000-255. ( I'm working on rewriting "305 Engineering"s inkscape extension. )
-Olaf
Re: Marlin firmware as laser cutter January 15, 2016 03:39AM |
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Re: Marlin firmware as laser cutter January 15, 2016 12:26PM |
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Re: Marlin firmware as laser cutter January 16, 2016 03:28AM |
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Re: Marlin firmware as laser cutter January 17, 2016 03:59PM |
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Re: Marlin firmware as laser cutter January 18, 2016 12:30AM |
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Re: Marlin firmware as laser cutter January 18, 2016 11:07AM |
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Re: Marlin firmware as laser cutter January 18, 2016 11:26AM |
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