hey guys thanks again for the input - i'm getting there!! Thanks - trapperjohn, using the method you mentioned, I wired the TTL to pin 6 and gnd then added the line #define FAN1_PIN 6 // 2nd fan output attached to laser TTL input just before the #endif // CONFIGURATION_H (in configuration.h) in pronterface which is what I use for the "frontend" control...when I type the commands below itby gauthib72 - Laser Cutter Working Group
LOL..I have read the article before but as I understand it, looks like the power port on the laser driver is wired to d9 which would switch my laser on /off..but I want to use the ttl port just using the signal to control the pwm...am I misunderstanding?? As I read switching the laser on/off via just power may damage the diode..please correct me if I am wrong..by gauthib72 - Laser Cutter Working Group
yes sorry remapping, what I meant by changing this line as most have done from the D9 pin to 44 // // Heaters / Fans // #ifndef RAMPS_D9_PIN #define RAMPS_D9_PIN 44 #endif I can't understand why using the D9 fan port on the Ramps 1.4 board with a 12v to 5v 7805 regulator to TTL port, doesn't work for me either similar to the method on Youtube video by Jake's Workshop on October 26, 2017 I'veby gauthib72 - Laser Cutter Working Group
Hi cozmicray Yes, 1.1.9 Marlin firmware, will use Inkscape software to generate gcode I tried remapping the D9 to pin 44 but it does not work for me I get no voltage readings so my biggest problem is changing Marlin to recognize the pin I read that pin D6 is PWM 5v so I want to use that pin but am unsure which lines in marlin to change I think I get the wiring .. just not Marlin refering toby gauthib72 - Laser Cutter Working Group
I am wondering if someone can steer me straight in regards to adding a laser to my 3d printer? I am trying to get this to work on my older Prusa i2. I picked up a 2.5w module which comes with the small driver board that has a TTL input. As many have tried and there is lots of good information on here, I am having a hard time trying to nail down a way to get my setup to work - I have researched sby gauthib72 - Laser Cutter Working Group
Hi Xonk61, Sounds to me like I have a similar setup as you, but with a 2.5w laser.... I want to have the TTL control the laser.. so far I have tried the D9 with 7805 to TTL.. the remapping to pin 44 and I can't get the laser to do anything it just comes on a full power..no control..remapping didn't work either! With your 12V connected to RAMPS D9 and TTL to pin 6 what Marlin firmware changes diby gauthib72 - Laser Cutter Working Group