- Joined
- Feb 10, 2011
- Messages
- 2
- Points
- 0
Before I start, sorry for low-quality pictures, using my laptop webcam as I don't have a camera.
And also, sorry if my soldering seems bad...this is my first real soldering project.
Okay so I'm working on my first laser+driver, and seem to have somehow hit a problem with the driver. I've looked at several guides and videos and asked my engineering teacher if he could figure out what was wrong, but I have no ideas.
Top part
Bottom (connections and solderings)
Dummy load pic 1
Dummy load pic 2
Dummy load pic 3
Power source is a 9v battery btw. I tried connecting the driver to the dummy load and using the multimeter to check the voltage and get my pot set right...but I always get a reading of 0 volts across the resistor at the test load and 0 at the "reference voltage" (which if I remember the picture right is supposed to be 1.25V) before the pot and after the resistors.
Idk if something is soldered wrong, bad connections, or just bad parts, but I really need some help. :yabbem:
Oh and this is for a red laser...if anything else is needed, or more/better quality pictures, I'll try my best to include it :undecided:
And also, sorry if my soldering seems bad...this is my first real soldering project.
Okay so I'm working on my first laser+driver, and seem to have somehow hit a problem with the driver. I've looked at several guides and videos and asked my engineering teacher if he could figure out what was wrong, but I have no ideas.
Top part
Bottom (connections and solderings)
Dummy load pic 1
Dummy load pic 2
Dummy load pic 3
Power source is a 9v battery btw. I tried connecting the driver to the dummy load and using the multimeter to check the voltage and get my pot set right...but I always get a reading of 0 volts across the resistor at the test load and 0 at the "reference voltage" (which if I remember the picture right is supposed to be 1.25V) before the pot and after the resistors.
Idk if something is soldered wrong, bad connections, or just bad parts, but I really need some help. :yabbem:
Oh and this is for a red laser...if anything else is needed, or more/better quality pictures, I'll try my best to include it :undecided: