3 Pin Laser Diode Connections

Figure 3 laser diode anode is connected to pin 1.

3 pin laser diode connections.

It will require a heat sink i think. Signal pin 8. Download the source code attached here and open it via arduino software or ide. The device you have looks like it has either a built in controller or is running in straight open loop uncontrolled mode.

The forums are. The connection between laser diode module and arduino uno is described in detailed way as below. A potential cause of confusion when connecting a driver to a laser diode is whether to connect the anode of the laser diode to the positive or negative terminal of the driver. You do not power this laser by just applying a dc voltage to it it will self distruct.

Instead i have a 4 pin diode of unknown wavelength color and power. Ky 008 laser module emits red light. I did so expecting to have just a normal 50 200mw 3 pin red diode. The photodiode is there to give a feedback signal to the driver circuit to help maintain laser current to desired amount.

Lasers are one of the coolest things that you can build yourself from a pure sci fi fantasy standpoint. They re not easy though but this video will help you somewhat by describing different types of laser diodes and how to connect them to a power supply. This kind of raw device requires special driver circuit to control the laser diode current so as not to destroy it. Ky 008 laser diode module pinout.

You may have to guess these values if you don t have a part number or other identification most cd drives of the same write speed should have similarly spec d diodes. The figure above shows the internal structure of a low power laser diode. So since i already had one i decided to remove the insides and extract the laser diode within. Would anyone happen to have a pinout for it.

Ky 008 laser module is a cheap and easy to find arduino module used for hobby purposes. You need to know the specifications to run a laser diode the operating current has to be kept within fairly tight limits to ensure lasing and prevent burn out. Add tip ask question comment download. Pin 2 is ground and laser diode cathode is connected to pin 3.

Choose the correct board and port before uploading the code into the board. Upload the source code into arduino uno. A laser diode is usually a three terminal device. Laser diode pinout 4 pins.

Part 1 of 2 how to connect different laser diodes to a power supply. The pins are arranged as below in the picture. Gnd gnd 5v 5v. It has both a laser diode and a photodiode mounted internally.