Nano RC12-3

• uses a Nano (with ENC28J60 Ethernet shield) & an on-board mounted Cytron for rate control
  • 1 or 2 MD13S for rate control
• self assembled through-hole board, least expensive
• controls two rates
• can be connected to a relay module with a 20 pin cable or dupont connectors
• work switch
• pressure switch
• [OSHPARK](https://oshpark.com/shared_projects/UU8e90h9

Teensy 4.1 RC11-2

• uses a Teensy & an on-board mounted Cytron for rate control
  • either (1) MD13S for single rate control
  • or (1) MDD10A for dual rate control
• small components are surface mount parts
• Teensy Ethernet
• can control two rates and eight sections
  • 8 relays (SPDT 12V output)
  • (1) 5V or 12V analog (pressure) input, potentiometer adjustable filtering
  • (2) optically isolated digital (rate/pulse) inputs (5V or 12V)
• 3.3V I2C headers (Qwiic)
  • supports optional external RelayDriver5 I2C board
• work switch
• canbus

ESP32 RC15

• uses an ESP32 (optional W5500 Ethernet Module)
• mostly surface mount parts
• can control two rates and 7-14 sections
  • (2) DRV8870 motor drivers with reversible outputs for rates
  • (7) DRV8870 motor drivers for 7 reversible (motorized ball valve) outputs
• (4) 5V analog inputs (or 2 differential inputs)
• (2) optically isolated digital (rate/pulse) inputs, up to 12V
• RS485 chip & header
• 3.3V I2C header
  • supports optional external RelayDriver5 I2C board

RelayDriver5

• PCA9535 based I2C IO expander
• designed to plug into 8 or 16 channel relay board with Qwiic cable

Firmware

https://github.com/SK21/AOG_RC