Customer:
How do I connect a laser to a Croduino board?
Original message (Croatian)
Zanima me na koji način spojiti laser sa croduino pločicom?
Originally submitted via email support on 23 August 2016. Migrated to the forum for community visibility.
Soldered Support:
The laser operates at 3V, so you need to be careful not to connect it directly to the 5V Croduino. You can use a resistor like the ones used for LEDs, for example 330ohm.
Alternatively, if you don’t have a resistor, you can connect it to a PWM pin on the Croduino and control it with the analogWrite() function, but be careful with the values: 255 is proportionally 5V. The maximum value you can use is (255 * (3/5)), which equals 153, proportionally 3V.
https://e-radionica.com/hr/blog/2015/11/26/arduino-ide-inputoutput/#OUTPUT
Original message (Croatian)
laser radi na 3V pa moraš paziti da ge ne spojis dirketno na 5V Croduina. Možeš koristiti otpornik koji bi stavio na LEDice, npr. 330ohma.
Alternativno, ako nemaš otpornik, spojiš ga na PWM pin Croduina i pališ s analogWrite() funkcijom, ali pazi na vrijednosti: 255 je proporcionalno 5V. Maksimalna vrijednost koju smiješ koristiti (255 * (3/5) ), odnosno 153 što je proporcionalno 3V.
https://e-radionica.com/hr/blog/2015/11/26/arduino-ide-inputoutput/#OUTPUT