Want to DIY a IR Flash?

richardg · 12th November 2007

Managed to get hold of some 4w 830nm LEDs.
Due to busy schedule, looking for fellow hobbyist to partner to diy IR flash.
Should have some electronics experience and handling of soldering iron.
Will get to use first of its kind IR strobe.
Please pm if interested.
Thanks

hacknet · 12th November 2007

IR LEDs...! i didn't know they made them so powerful now.

if i were you, get a 1 shot 555 and a 6v battery to pulse the gate of a mosfet. should do the trick, control the power of your flash by the on time of the 555, should be pretty fun!

richardg · 12th November 2007

Originally Posted by hacknet

IR LEDs...! i didn't know they made them so powerful now.

if i were you, get a 1 shot 555 and a 6v battery to pulse the gate of a mosfet. should do the trick, control the power of your flash by the on time of the 555, should be pretty fun!

ya.. got a few of them, can overdrive

haha want to give it a shot? ..pun intended..

got some bipolars for faster reponse..
555s dunno still have or not...
else need to go down slt lor...

can get hold of ir modded camera?

hacknet · 12th November 2007

i'm not into the IR thing but certainly sounds interesting, i think mosfets are better since absolute delay in nano seconds arn't that important, more importantly is the Vce/RDSon. i've come to like mosfets in this area, especially when you start sinking bucket loads of current at low voltages.

n0eln0el · 12th November 2007

hi guys
if u are interested to get more LEDs
do let me know, I've got a friend dealing with LEDs
maybe can get cheap cheap

richardg · 12th November 2007

Originally Posted by hacknet

i'm not into the IR thing but certainly sounds interesting, i think mosfets are better since absolute delay in nano seconds arn't that important, more importantly is the Vce/RDSon. i've come to like mosfets in this area, especially when you start sinking bucket loads of current at low voltages.

how are mosfet switching loss...
may need to switch at 50 hz for videoing...
and shutter at less then 1/1000 for moving objects....

anyways can try see.. already got the TIPs..

anyone wanna try? can probably shoot 50 meters or more in the night.. with modded cam.

richardg · 15th November 2007

no one interested in being able to shoot at night 100meters away without any visible light?

12th November 2007	#1
richardg Member Join Date: Sep 2006 Posts: 241	Want to DIY a IR Flash? Managed to get hold of some 4w 830nm LEDs. Due to busy schedule, looking for fellow hobbyist to partner to diy IR flash. Should have some electronics experience and handling of soldering iron. Will get to use first of its kind IR strobe. Please pm if interested. Thanks

12th November 2007	#2
hacknet Member Join Date: Mar 2007 Posts: 1,090	Re: Want to DIY a IR Flash? IR LEDs...! i didn't know they made them so powerful now. if i were you, get a 1 shot 555 and a 6v battery to pulse the gate of a mosfet. should do the trick, control the power of your flash by the on time of the 555, should be pretty fun!

12th November 2007	#4
hacknet Member Join Date: Mar 2007 Posts: 1,090	Re: Want to DIY a IR Flash? i'm not into the IR thing but certainly sounds interesting, i think mosfets are better since absolute delay in nano seconds arn't that important, more importantly is the Vce/RDSon. i've come to like mosfets in this area, especially when you start sinking bucket loads of current at low voltages.

12th November 2007	#5
n0eln0el Member Join Date: Nov 2007 Posts: 255	Re: Want to DIY a IR Flash? hi guys if u are interested to get more LEDs do let me know, I've got a friend dealing with LEDs maybe can get cheap cheap

15th November 2007	#7
richardg Member Join Date: Sep 2006 Posts: 241	Re: Want to DIY a IR Flash? no one interested in being able to shoot at night 100meters away without any visible light?