OOK... Well this is awkward. I just joined a forum where everyone here is older, more experienced (well, ok, maybe not that last) and beter at electronics than me. Hi. Im Liam. I am trying my first build. I have a 20x dvd burner diode (two actualy) and im trying to make a laser pointer... I tend to look down on those who say "oh, i made this, caugh caugh, by which i mean i ordered all the parts online and put them together in ten minutes" so instead of doing the smart thing and ordering a driver online like everyone else, Im trying to make one. After two failled atempts, i am questioning weather (wether? how do i spell this anyway? and im not sure about awkword either) this is realy as complicated as it seems.
I have viewed the tutorials here, and they mostly say that you need a capacitor to capture voltage spikes, and then you need a lower current (if you using two AA bateries, that is) so i need around 300-400 mA to run this thing, so i crunched the numbers and a 10 ohm resistor hooked (hoocked? hocked?) to three volts should be about right, maybe a little under. I have no reason to ad (add? ade?) a potentiometer(yes, ok, i promise il look up the spelling soon) so why wont this circut even run a small engine? I set up two AA bateries, a 50v capacitor, then a 10 ohm resistor and a button(buton?) to an electric engine, and its not even turning, so i was wondering what the problem is... Did i just wire it wrong? Did i make a mistake with the math? Is the capacitor somehow eating all my volts? Im kind of fuzzy on my electronics (and yes, i have a few books, im working on it, just takes a little while on top of the comunity college and highschool classes and all that.) so if anyone can help me that would be fantastic.
Short verson for all the buisy types:
Im trying to build a driver for a 20x dvd burner diode of unknown model
I have little or no electrical experience, but im handy with an iron
I want something simple, easy, and preferably (how do you spell that again?) fast.
Thank you all,
Liam.
PS: please, no links to the newbys thread, Ill read it write after im finished here.
I have viewed the tutorials here, and they mostly say that you need a capacitor to capture voltage spikes, and then you need a lower current (if you using two AA bateries, that is) so i need around 300-400 mA to run this thing, so i crunched the numbers and a 10 ohm resistor hooked (hoocked? hocked?) to three volts should be about right, maybe a little under. I have no reason to ad (add? ade?) a potentiometer(yes, ok, i promise il look up the spelling soon) so why wont this circut even run a small engine? I set up two AA bateries, a 50v capacitor, then a 10 ohm resistor and a button(buton?) to an electric engine, and its not even turning, so i was wondering what the problem is... Did i just wire it wrong? Did i make a mistake with the math? Is the capacitor somehow eating all my volts? Im kind of fuzzy on my electronics (and yes, i have a few books, im working on it, just takes a little while on top of the comunity college and highschool classes and all that.) so if anyone can help me that would be fantastic.
Short verson for all the buisy types:
Im trying to build a driver for a 20x dvd burner diode of unknown model
I have little or no electrical experience, but im handy with an iron
I want something simple, easy, and preferably (how do you spell that again?) fast.
Thank you all,
Liam.
PS: please, no links to the newbys thread, Ill read it write after im finished here.