LazNC
0
- Joined
- Oct 10, 2017
- Messages
- 12
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- 0
I'm trying to build a laser module for a CNC machine. I've decided a diode based laser would be better to start with.
DTR seems to have a good selection and tons of options. I was thinking i could just get the NDB7875 with copper module, G2 lens, and SXD Driver.
Is there any issues i might have with these? I would like to control the SXD Driver with a variable PWM signal (not just On/Off TTL). I've seen tutorials that show some soldering can add PWM support to the SXD by simply removing a capacitor and adding a wire.
:thinking: Does DTR ship this assembled? (laser, module, driver + copper)
:thinking: Would this be a difficult mod once assembled?
:thinking: Is the SXD's modulation safe for this diode?
My reasoning for the laser is i want more power so that i can have higher feedrates.
The NDB7875 appears to be a good balance of power and divergence for my application.
The NUBM44 seems to have issues in cnc applications due to its wide "dot". I cant believe there's no optics that can correct for this, but there doesnt appear to be any readily available solutions. Are there?
The M140's are a good option as well, but i'd rather get the higher-rated diode and underdrive it, instead of pushing a lower-rated diode to its limit.
Or would i be better off leaving out the driver and getting this driver from x-wossee? (there is only one left so likely someone here will snatch it up lol)
3A analog linear / PWM laser diode driver with thermal protection | eBay
If these drivers are not suitable for this laser using PWM, what would be a good relatively cheap driver, preferably one i dont have to build. I've fiddled with electronics and have a basic understanding, but i dont want to put my $200 diode's life on the line, unless the instructions are real clear and easy.
I intend to use computer ATX PSU as a power supply (5v or 12v) but i've got a boost/buck converter i could use to tune the voltage further.
:thinking: This wouldn't be run off a battery. Would that change which drivers i can use?
Finally, i would love to get some protective sheets that i could mount around the laser head to help protect against the reflection/scatter from the work surface. Im aware thats not sufficient and will need 445nm goggles as well, but it would be a nice addition in case someone walks into the room unexpectedly. I couldnt find anything like this on survivallaser's site. If anyone knows of a good source of this material i'd be interested.
Optimally, i'd like to order the module from DTR if the SXD driver is easily modded for pwm.
I really appreciate any help i can get. Thanks!
DTR seems to have a good selection and tons of options. I was thinking i could just get the NDB7875 with copper module, G2 lens, and SXD Driver.
Is there any issues i might have with these? I would like to control the SXD Driver with a variable PWM signal (not just On/Off TTL). I've seen tutorials that show some soldering can add PWM support to the SXD by simply removing a capacitor and adding a wire.
:thinking: Does DTR ship this assembled? (laser, module, driver + copper)
:thinking: Would this be a difficult mod once assembled?
:thinking: Is the SXD's modulation safe for this diode?
My reasoning for the laser is i want more power so that i can have higher feedrates.
The NDB7875 appears to be a good balance of power and divergence for my application.
The NUBM44 seems to have issues in cnc applications due to its wide "dot". I cant believe there's no optics that can correct for this, but there doesnt appear to be any readily available solutions. Are there?
The M140's are a good option as well, but i'd rather get the higher-rated diode and underdrive it, instead of pushing a lower-rated diode to its limit.
Or would i be better off leaving out the driver and getting this driver from x-wossee? (there is only one left so likely someone here will snatch it up lol)
3A analog linear / PWM laser diode driver with thermal protection | eBay
If these drivers are not suitable for this laser using PWM, what would be a good relatively cheap driver, preferably one i dont have to build. I've fiddled with electronics and have a basic understanding, but i dont want to put my $200 diode's life on the line, unless the instructions are real clear and easy.
I intend to use computer ATX PSU as a power supply (5v or 12v) but i've got a boost/buck converter i could use to tune the voltage further.
:thinking: This wouldn't be run off a battery. Would that change which drivers i can use?
Finally, i would love to get some protective sheets that i could mount around the laser head to help protect against the reflection/scatter from the work surface. Im aware thats not sufficient and will need 445nm goggles as well, but it would be a nice addition in case someone walks into the room unexpectedly. I couldnt find anything like this on survivallaser's site. If anyone knows of a good source of this material i'd be interested.
Optimally, i'd like to order the module from DTR if the SXD driver is easily modded for pwm.
I really appreciate any help i can get. Thanks!
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