Space Invaders Clock

cults3d

Inspired by GeckoDiode (Instructables) and smooth_jamie (Instructables), I had to take up the challenge and build a version of my own. Case design is original and is designed to work with a MAX7219 LED dot matrix module. Arduino sketch is based off smooth_jamie original work. I improved the RTC logic and fixed various LED hex byte arrays for minutes and animations that did not display correctly. In addition, the Alien Space Ship now completes the cast of characters. LED Matrix Editor is a great tool to help create and troubleshoot matrix displays. PARTS: Arduino Nano Amazon MAX7219 LED Matrix Display (Red and Green LEDS) Amazon - Green Amazon - Red DS1307 Tiny RTC Module * REQUIRES PCB MODIFICATION * Amazon CR2032 Lithium Battery 8 ohm speaker Amazon 1K ohm Resistor SPST Momentary Push Button Amazon SB400 Solderable PC BreadBoard Amazon Micro USB Interface Power Adapter Board 5V Breakout Module Amazon 5 VDC Source - I used a USB power supply for a cell phone #4-20 X 5/8" Plastic Screws, QTY 4 Amazon ~~~~ Arduino Sketch - Included in Thing Files SpaceInvadersClockRepRapTodd03152020.pdf ~~~~ Note: Tiny RTC module needs R4, R5, R6 and D1 removed from PCB. R6 requires a wire to complete the circuit after removing the resistor. Now that the faulty recharging circuit is disabled, use a standard lithium 2032 battery to keep time when power is removed. Arduino libraries required:MaxMatrix - interfaces with the series of 8X8 LED displaysJeeLabs RTClib - Real Time Clock - DS1307 Tiny RTC Module UPDATE: 03152020 - Fixed sketch to display midnight correctly. Updated line #1205 - case 12: case 24: to case 12: case 0:, now correctly evaluates time at midnight. Thing file updated with code fix.