All Questions
21
questions
-1
votes
1
answer
79
views
Creating a circular laser beam projection [closed]
I’m looking to create a small device (<5 in.) that will project a circular beam around it, a certain distance away from the object. The goal is to have a laser/projector module/something at the top ...
- 239
1
vote
1
answer
112
views
Arduino's impedance in breadboard circuit
(Warning, as this is a long question, asked by students that don't know what they're doing. Perhaps our questions are too general and can't be answered but at this point we'll take all the help we can ...
3
votes
2
answers
169
views
How can I detect when football passes through a hula hoop?
How can I measure whether a football passes through a hula hoop? The main challenge is the need for outdoor use, which presents difficulties due to the presence of ambient light (sunlight).
It might ...
- 31
0
votes
0
answers
1k
views
Building a long-distance laser rangefinder
I’ve started a new project last week, something that I had had in mind for a long time: building from scratch a long-distance laser rangefinder.
Unfortunately, after going through all of google, the ...
0
votes
1
answer
181
views
Laser tag IR LED beam reflection problem
I built a laser tag gun using an Arduino,but there is a problem. When I use it indoors with lens or without I have beam reflections. If I shoot on the wall the receiver also claims a "hit." ...
- 29
1
vote
1
answer
382
views
Arduino ultrasonic sensors in closed spaces
I am wondering whether or not it is possible to use an Arduino ultrasonic sensor in a closed box (30 cm x 30 cm.)
I have been told that the walls will cause the signal to bounce all over the place and ...
- 31
1
vote
1
answer
313
views
Laser and galvo project
I'm working on passion project that would allow me to control laser and mirror galvanometer (galvo in further text) using Arduino board.
Laser and galvo that I've bought are encased in plastic ...
- 113
0
votes
2
answers
223
views
Arduino Laser Engraver cd drive - what do i connect where?
I am a beginner in the world of circuit boards and electronics, and this is my first real project. I am making a DIY laser engraver, following the instructions in this instructable.
Here is the ...
0
votes
2
answers
218
views
Powering an IR + RED laser with an Arduino
I am hoping to run a laser diode from an Arduino.
The specific one with included data sheets are here:
https://industrial.panasonic.com/kr/products/semiconductors/laser/red_infrared/red-and-infrared-...
4
votes
2
answers
703
views
Transimpedance amplifier with inverted output
In a little hobby project I am trying to send data from one Arduino to another using a modulated laser and a photodiode.
On the sender side, the laser has a dedicated modulation input for up to ...
- 51
0
votes
1
answer
812
views
Improve switching speed for a <50mW laser with an Arduino and Transistor
I'm trying to build a "laser harp" device similar to this: (http://www.instructables.com/id/Frameless-Laser-Harp/), but I'm having trouble switching my laser on and off fast enough, and for full ...
- 103
1
vote
5
answers
4k
views
Laser diode driven by a voltage source seems OK
I have bought a KY-008 laser diode module and connected it directly to an Arduino's output pin. It has been blinking (on for 0.5 second, off for 0.5 second) for an hour. I am very puzzled.
From ...
- 141
1
vote
1
answer
772
views
Creating a vector display with a laser
Recently, I've been playing with arduino and programming games on an oscilloscope! I thought it would be really cool to recreate a classic vector screen (like the vectrex https://en.m.wikipedia.org/...
- 135
2
votes
2
answers
4k
views
DIY Laser Tag, Safety and Modulation questions
So I'm trying to build a Laser Tag game for some friends, I was wondering a couple of things
Safety - I'm using 5mW red lasers from Aliexpress. I have no datasheet for the lasers, so I was wondering ...
0
votes
2
answers
2k
views
Detecting linelaser with photodiode and Arduino
I'm looking to experiment with a Valve Light lighthouse sort of setup. I've bought line lasers and pin photodiodes (BPW34) and get to successfully detect the laser line. The photodiode is in parallel ...
- 143