To build a micromouse I need sensors that see the maze and motors that move the robot through the maze, connected to a brain that I can teach. All of that is powered by a battery. In this post I’m going to connect the micromouse sensors and graph their output. (more…)
An LCD is a great way to communicate a lot of information fast from an Arduino. Combine it with a few buttons, and it suddenly becomes a great control interface for your new machine, whatever it may be. However, LCDs only use 16 pins to communicate with other circuit boards, but the Arduino UNO only has 13 pins. We’re going to need to use something in between to let us do more with less. This is where an I2C backpack comes to the rescue. The only tricky part is that each I2C backpack and LCD are slightly different and require some small tweaks. Today, let’s go through it and show you how the LCD/I2C combo works out.
Check out our final product:
Much like the previous tutorial (how to use a 4-digit seven segment display), this time we’ve got only one seven segment digit, but with a strange number of pins!
Today we’re going to be playing with a 4 character seven segment display. It’s intended for displaying any number with 4 characters.
Making a stepper motor move is easy with an A4988 driver. They’re super straightforward and very versatile, making them very popular for 3D printers and other DIY CNC machines.
