green laser with TTL control (PIC micro)

The 50mw green laser with driver is from ebay. Here the TTL blanking control of the laser is triggerd by a PIC microcontroller.
The PIC is running a program that outputs a square wave signal into the laser. The on and off times of the square wave signal is controlled by the user through a simple menu system on the LCD display and through 3 buttons for input.
The signal generated by the PIC is sent to the laser through a small switch so that it can be controlled. The output is always shown by the red LED.
Everything is powerd by the 5 volt rail of a PC power supply.

The PIC micro used: PIC16F628 (running at 4MHz)

The LCD used: 20 characters by 4 line display with LED backlight with standerd HD44780 controller (taken from an old circuit)

The laser used: unknown laser from ebay, rated at 50mw (draws about 400ma)

The code for the PIC was a bit rushed and is fairly simple.
If anyone wants the code for the PIC then send me a message with your email address.

Category:

Science & Technology

Tags:

• laser
• 50mw
• PIC
• micro
• controller
• LCD
• LED
• TTL
• PC
• power
• supply
• 4MHz