Microcontroller ArtNet and DMX experiments (ATmega8/ATtiny13, ENC28J60)
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bridge
peripherals
receiver
tinyrecv
tools
.gitignore
LICENSE.txt
README.md
TODO

README.md

megadmx

Minimalistic DMX & ArtNet projects using the ATmega8

  • ArtNet to DMX bridge using an ATmega8 and an ENC28J60
  • DMX receiver with PWM outputs using an ATmega8 and a MAX481
  • DMX receiver with PWM outputs using an ATtiny13 and a MAX481

Documentation TBD

Hardware Setup

Bridge

MAX485 DI   <-> PD1 (UART TX)
MAX485 DE/RE    <-> HIGH
LED1        <-> PC5
LED2        <-> PC4
ENC CS      <-> PB0
ENC INT     <-> PB1
ENC SPI     <-> ATmega SPI
ATmega SS   <-> HIGH
ENC RST     <-> HIGH
ENTER button    <-> PD0
UP button   <-> PD2
DOWN button <-> PD3
SSD1306 SPI <-> ATmega SPI
SSD1306 CS  <-> PC3
SSD1306 DC  <-> PC2
SSD1306 RES <-> PC1

Receiver (mega8)

MAX481 RO   <-> PD0 (UART RX)
MAX481 DI/DE/RE <-> LOW
DMX ADDR    <-> PC012345 PD567
PWM OUT     <-> PB123

Receiver (tiny13)

MAX481 RO   <-> PB3
MAX481 DI/DE/RE <-> LOW
PWM OUT     <-> PB01
ADDRSWITCH  <-> PB2

Hold the ADDRSWITCH down to set the channel addresses
to the first two DMX channels with value > 127