pine 140 Posted November 27, 2011 Share Posted November 27, 2011 Are there any recommendations for laser modules that work with the trick of shining to the LED on a LaunchPad? I found the security board from a forum member here really interesting and was trying to replicate with a simpler version. The original link is here viewtopic.php?f=9&t=1837 Several commonly available laser pointers were used and they all are good at the trick - the LED on the LP responded to the laser and can be used as trigger. However, when the module is disassembled from the laser pointer, they all seems to "magically" lost the power like in half and it not longer fit for the purpose. The best one lasted for like half day run with the original power, after that it is like half power. When it was good, 3V from the LP is supplied and it was as strong as the original. The original form (before disassembling) took 3 1.5V coin cells. I tried with a 5V supply and it is still dim Any help or suggestion will be much appreciated. I am also trying to source a proper one like the one from here: http://hk.element14.com/jsp/search/prod ... ku=1272658 Will it work by simply giving voltage and ground or is there a need for some kind of driver? Thanks in advance. Quote Link to post Share on other sites
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