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Wxtoimg professional enhancements code#

In a previous article, I wrote all about Iridium satellite communication for IoT projects using an Iridium modem and simple Arduino technology.

Wxtoimg professional enhancements code#

Project source code at GitHub: iridium-signal-strength-monitor The code is on GitHub, and here is the schematic so you can build it yourself with the things you have lying around.

I made the circuit on an Arduino shield prototyping board. This leads to even more interesting visualizations. There are also pots to control the PWM duty cycle and PWM frequency. This makes sense, of course, because the motors cause periodic oscillations along different axes. They look a lot like Lissajous figures you see on an oscilloscope. The motors are mounted perpendicular to one another, and when you change the speed of the motors, the vibrations cause the laser to oscillate in chaotic patterns.

4 10K pots to control motor speeds, laser PWM duty cycle, and laser PWM frequency.

2 cell phone vibration motors from AliExpress.

What happens when you mount vibration motors on a laser? Well, it turns out you can make a cool laser show! I also have a handful of cheap vibration motors. I have a bunch of these cheap laser modules that can easily be driven from an Arduino with 5V, and they only draw 20mA of current. Here’s a fun idea I had while quarantined during the 2020 pandemic.