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I'm thinking of connecting my M-140 in C6 host to a simple avr circuit I built to convert ASCII into morse code. I'm unable to think of a way to modify the clicky switch such that I can use the laser standalone and with the base of the transistor linked to the mcu for transmitting. I'm...

Has anyone seen this? It almost like it was meant to encourage kids to go online and buy one. Same thing as sensationalised media reports of murders that encourage others to commit murder...

After an agonising 2 month wait for all the components to pass through the festive mail service lag. Here are the two lasers: LPC-826 @ 400mA (Ebay seller Newgazer) Using a modified version of the constant current driver found at Rog8811 DC jack input and 3.5mm TRS jack as a safety plug...

Firstly, this is roughly what I'm intending to build. Ugly resistor "farms" to make up for my lack of components. My main concern is the discrepancy in voltage between the 2X18650cell battery (7.4V) and the WallWart (9V). Should this be a cause for concern?:confused: Besides the extra power...

In the midst of waiting for parts to arrive, I decided to throw together a simple laser just to get over a bad day. Screwed up two exams in a day :banghead: Diode came from a "broken" laser pointer, supercapacitor is a 1.5F 5.0V from Cooper Bussman that I had lying around. Excuse the poor...

Fellow laser lover from Singapore here! Male undergrad currently taking a double degree in Physics/ Material sciences. Have built a couple of lasers before, but nothing >50mW so far. Hoping to change that statistic soon :) I have a strange preference for red lasers, they just look cooler to me...