I thought I could get the current I want with the value of the resistor?
So other than not discharging to capacitor what could I be doing wrong here? I can't seem to know why it is not working correctlyYou can calculate it, yes, but it's best to test the driver with a test load before connecting your laser diode. Also, never run the driver without a load, if you do make sure to discharge any capacitors on the output before connecting a diode.
Yea but do you think I might have damaged the diodes because I used a 2.4 ohms resistor which the current output is around 500mA maybe that's too much for the laser diodes?A 9 volt battery, the type used in radios etc., is capable of several amps of current for a period of time, up to 10 to 20 amps if new, for some of them. Not long, but it will. There is more than enough current capacity for that diode, way more than enough.
i cant seem to find any can you please let me have the link thanksGet a laser diode driver, or build one.
ACS500SE - compact SEPIC (Buck/Boost) Laser/LED diodes driver. This driver is designed for powering low-power laser diodes and LEDs. Auto buck/boost operation with a stable output current. The driver can operate without a heat sink if the input current is below 1A.www.ebay.com
Search this forum for "LPC-826"
I recommend the LPC 836, it's a bit more output, or the LPC-840, even more: https://www.ebay.com/itm/5x-Mitsubi...500mW-Red-Laser-Diode-TO18-5-6mm/113220774194