micompass

A minecraft compass for Arduino!

Building

1. Link this directory to ~/Arduino
2. Open the Arduino software
3. Select Arduino Nano & upload

Hardware

• Arduino Nano clone from eBay link
• GY-271 compass module
• GY-GPS6MV2 GPS module

Pinouts

• Pin D6 - TX on the GPS
• Pin D7 - RX on the GPS
• Pin A4 - SDA on the compass (also SDA on the Nano)
• Pin A5 - SCL on the compass (also SCL on the Nano)
• Pin D10 - Button to set waypoint (normally low, with external pull-down)
• Pin D13 is the built-in LED

Notes

Compass module: X is north, uses I2C, by default Z must be up to work

Todos

• Figure out better blink pattern
• Calibrate compass & handle non-horizontal modes
• Play with LCD (need level shifters)
• External power supply
• Switch to a Teensy?
• Try internal pull-down for button?