This is an enhancement of the smaller A6211 laser diode driver. This board protects the laser diode from over-temperature and it can accept a PWM modulation to control the current through the diode.
LASER DRIVER OEM-D1-V4
TEC DRIVER OEM-D2-V4
Recently, a friend of mine talked to me about his new hobby - handheld lasers. A big downside of the cheap lasers purchased from China turns out to be the design of their laser diode driver boards. Most of them are based on the LM358 operational amplifier and use a bipolar transistor to regulate the current. There is one major problem with this configuration - the transistor dissipates a lot of heat - especially if the voltage of the batteries is significantly larger than the forward voltage of the laser diode.