Dorcy Jr and Flexdrive

Nass · Nov 30, 2009

Hello every1 im new here and i just purchased all the parts im going to need in order to make a blu-ray laser. I am having some trouble tho... It comes with a flexdrive and i do not know exactly how to set the proper current for the diode. I want it to be pretty much a max power.. I'v been searching the threads every chance i get to try and find tutorials on the flexdrive but i keep seeming to fail... :/ can any1 supply me with some helpful information? or perhaps links to the post alrdy in progress. also is it possible to test how much mW im putting out with just the flexdrive and a battery? thanks.. please be gentle... lol

GeGGuli · Nov 30, 2009

flexidrive should come with directions how to set current (instructions pdf file is herehttp://hacylon.case.edu/ebay/laser_diode/MicroFlexDrive_V5_manual.pdf
and what kind or blu-ray diode are you using? it depends of diode how much power you gonna get from laser
for phr-803t sleds diode 90 mA would be good
and no you cant measure mW with just an battery and driver and if you would have diode too you would need laser power meter

hoppe i helped someway!:can:

jayrob · Nov 30, 2009

Read carefully the documentation that was linked above.

Also, do not power the FlexDrive without a proper load. It could get damaged.

For test loads, connection diagrams for setting current, and so forth. Here is good information from rog8811. He shows a DDL driver, but the test load, connections, and everything apply to the FlexDrive as well:
It can be done - Laser driver

Nass · Nov 30, 2009

it is a PHR-803T (HD) Blu-Ray (sled) i am getting that i am going to have to extract the diode from. so ur saying that when i get the flexdrive i wont have to mod it that the default settings should be powerful enough to use this diode as a "burning" laser?

newbie · Nov 30, 2009

Nass said:
so ur saying that when i get the flexdrive i wont have to mod it that the default settings should be powerful enough to use this diode as a "burning" laser?

Who said that...?
No, you will have to follow the instructions given/linked above to set the current of the driver to ~100mA for your diode. If you hook it up without testing the current or anything, you have a good chance of destroying the diode.

Nass · Nov 30, 2009

well see im confused.. cause when u get the chip its default setting is 65-100mA so wouldnt that be good for the laser im building?

Nass · Dec 1, 2009

soo.. should i have a test load? to test what i want the blu-ray to be? i'v been looking up how to build one.. seems simple enough.. theres just so many different ways its starting to confuse me.. lol cant these damn things be prebuilt in my hand alrdy

i guess i cant just buy all the parts and then use it.. i gotta do this test stuff...

seems if you dont it will burn out your diode.. and i do not want that happenen.. if some1 can link me the most SIMPLEST way to build a test load possibly out of a bread board (i have an extra..) and a list of the exact parts i need for a PHR-803T (HD) Blu-Ray... i know there on this forum somewhere but i'v been searching for over an hour now and i cant seem to find it.. :/ i fail yet again..

martianpc · Dec 1, 2009

You can contact Igort if you want a nice pre built.

bobhaha · Dec 1, 2009

Hey Nass, I can send u a free test load so you can measure the exact amount of current going to ur diode. I can make you one for free as long as you pay for shipping, let me know if your interested.

Take care -Adrian

Nass · Dec 1, 2009

well i just got home from work and i had my package with all my stuff for my laser pointer

wow the flexdrive is so TINY!! lol.. after work tomorrow im gonna hit up radio shack and grab 6 of the 1N4001 Micro 1a Diodes and i alrdy have a 1OHM resistor.. so should be simple enough to make.. heres a pic of the 1 im gonna throw together let me know if it is good to use.

Nass · Dec 1, 2009

So say i build that today.. where (when im testing it) do i want my numbers to be.. 150? i'v seen that number come up a couple times when talking about a "burning" blu-ray diode. Please get back to me ASAP

Thanks!

LordKaramazov · Dec 1, 2009

if its the phr-803t u shouldl have it in 100mA or 100mV max if u want it to last... So get it around 90-100mV or mA depending in which manner u are measuring

(edit) that is if u are measuring with an 1Ohm resistor u are measuring volts...if u are reading the current directly u should be reading in amps...if u use a different kind of resistor u should go like I(A)=V(V)/R(Ohm)(edit)

Nass · Dec 1, 2009

yes im going to be following the picture i posted before to an exact replica. so i would be using a 1 ohm resistor, which means i wanna get my reading between 90-100mV correct?

LordKaramazov · Dec 1, 2009

exactly. It should burn (not as easily as if in higher currents) but it also should give u lot of time before it goes LED.

Nass · Dec 2, 2009

well... put everything together.. had a little trouble soldering the flex.. but with the test dummy all numbers are 0

think i burned my flexdrive...

bobhaha · Dec 2, 2009

Are all the diodes set the right way? diodes stop current from flowing the oppersite way so if you have one the wrong way around they can stop the flow. Also are all solder points good? Are you measuring in parrellel with the 1 ohm resistor? what settings are you using on your DMM? do you have the dummy load set up the correct way?

You could of just got one premade... and wouldn't have this much trouble!

pics would be helpful!

-Adrian

Dorcy Jr and Flexdrive

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