A £1 laser, a 7805 and a 555 remote control modulator/driver
ฝัง
- เผยแพร่เมื่อ 17 พ.ค. 2024
- After getting bored using my £1 red laser diode (purchased at a fair) pointing at things and then shelving it for years, I recently wondered what else I could do with it? Is it possible to use it for communication, can I get it to speak? To keep it simple and basic, I'll need to design a modulator and driver circuit. Then make a receiver using similar principles, to drive some sort of analogue device - a meter. Potentially, this remote control device could operate over some distance. This video is part 1 of probably 2.
0:0 Introduction
3:03 Setup
5:12 Beam in the dark
6:51 Circuit explanation
11:46 Oscilloscope pictures
12:35 Optical Tx and Rx board pictures
Please consider Liking, Sharing, and Subscribing - Thank you.
The microphone used in this video is of my own design: • My Sweetcorn? TH-cam ...
**Please help me purchase components for more projects/repairs. To make a donation: paypal.me/ThankyoufromBeamer?...
Contact me: beamerelectronics@gmail.com
#Beamer #electronic #laser
Links:
NE555 datasheet: www.diodes.com/assets/Datashe...
78L05 datasheet: www.ti.com/lit/ds/symlink/lm7...
Notes:
* I failed to mention that the laser beam's brightness is also proportional to the pulse's repetition rate and width.
* In the video, I said the little 100mA series regulator is a L7805, it should be 78L05.
* This type of proportional control system doesn't have feedback from the receiver back to the transmitter.
* The reverse protection diode (D4) will only fully protect if there's an inline (supply) polyfuse of about 100mA.
* In parts, the sound quality of this video isn't as good as I would like - I'm looking into this. - วิทยาศาสตร์และเทคโนโลยี
Very interesting, thanks!
Thank you, Ko, for visiting and appreciating my work (enjoyment). I'm now refining the receiver, but I've been 'instructed' to repair our TV first! All the best.