Ofen

(Ofen is german for oven)

The real oven is a toy oven made of wood.

Hardware

I added:

• four Neopixel rings (16 RGBW LEDs) as gas burner on the top
• two Neopixel (8 RGBW LEDs) strips inside
• eight 14-segment displays to show texts
• two incremental rotary encoders
• a 3W I2S based audio board
• a Raspberry PI Zero W to connect everything

Connections

• The Neopixels are controlled via SPI
• The segment displays are controlles via I2C
• Audio is connected vie I2S
• the rotary encoders are connected by GPIO (and converted to Linux input devices)

Code

This repo contains the C++ program that contains the menu (user interface), controls the LEDs (based on TGA Image files) the Display, etc.

Note: The code for controlling the NeoPixels via SPI needs a fix SPI frequency. The raspberry derives the frequency from the core frequency and that can change: then the timing will not work anymore. To avoid this, add core_freq=250 to the config.txt