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P a g e
J Tech Photonics, Inc.
Pic-
Convert™ Board Instructions V2
.7
Copyright 6/13/17
Pic-Convert™ Board Instructions
This is the fifth version of the Pic-Convert board and now has fully isolated inputs and provides a power
supply to make the solution completely industrial. This DAC+PWM board solution has been developed
with Jeff and John at picengrave.com for use with their picengrave software for laser image
engraving. This board uses the STEP and DIRECTION signals from a spare axis to output a PWM signal (or
analog) to a laser driver for laser power control. This allows software controlled CNC machines (like
Mach3) to adjust the laser power on the fly for image engraving applications.
With the board you will now adjust your laser power by MOVING the axis you selected to hook up.
There is also an enable signal to turn the laser on and off.
Features
•
Convert Step and Direction signals into PWM or analog output for laser drivers.
•
PWM output for PWM modulated drivers.
•
Analog output for analog modulated drivers.
•
Output Enable Relay to control output with M03/M05 command.
•
Fully isolated inputs allow for more industrial applications.
Contents of the box
In the box for the Pic-
Convert™
there should be the circuit board with enclosure and 7 volt 1 amp wall
power supply for connecting power.
Safety
This board is designed to work in conjunction with high power lasers. When using lasers always make
sure you take the appropriate precautions for safety including the use of protective eyewear and
shielding. Always use caution when operating CNC equipment.
Using the board
There are two ways in which to use the Pic-
Convert™
board:
1.
Connecting it to a laser driver that uses PWM to modulate the laser intensity.
2.
Connecting it to a laser driver that uses ANALOG to modulate the laser intensity.
Set-Up Video
https://youtu.be/Jqj29GKFXdo
Input Specifications
The Pic-
Convert™
board requires DC voltage signals for step, direction, and enable pins. We recommend
using 5 volt signals. The inputs are all opto-isolated and can handle up to 24 volts.
