12. Class - juxtapix/IMA_E4I GitHub Wiki

Concepts:

• Protocols
• Serial Communication
• I2C
• SPI
• RS232/RS485
• DMX512
• Midi

Components:

• MAX485

      MAX485
   +----U-----+
RO | 1      8 | Vcc
RE | 2      7 | B
DE | 3      6 | A
DI | 4      5 | Gnd
   +----------+
 
RO  - Receiver out
RE  - Receiver enable (enabled when this pin is LOW)
DE  - Driver   enable (enabled when this pin is HIGH)
DI  - Driver   in (the transmitter pin)
GND - Ground (0V)
A   - Connect to pin A of the other 485 IC
B   - Connect to pin B of the other 485 IC
Vcc - Power (Vcc)

Tools/Skills:

• Logic Analyzer

Readings:

_Modular Electronics: Chapter 17

LAB:

• Arduino Serial
• MAX485
• Arduino DMX