This listing is for the equipment extension PCB circuit board and comes fully assembled. It's compatible with the Robo-Tank controller and can be used as is for your own projects. You can connect one of these to the controller using the included cables, if you want to run two of these you would need the Robo-Tank PCA9685 Expander.

The equipment extension has six 12v - 24v DC ports which are great for dosing pumps, lights, valves or anything DC powered. Each DC port has a hardware based emergency backup port for a float switch or other type of switch. The backup ports are great for critical applications as they will shut off the corresponding DC port no matter what the program or Pi says. Each port is driven by a 12-bit PWM signal which allows you to adjust the speed or output of each port using reef-pi. If the main input is 12v you can output 6v-12v, if your input is 24v the output can range from 12v-24v.

There's also 8 auxiliary outputs that can be accessed using the pluggable screw terminal connectors or using the four 3.5mm jacks. Each port can be set to output a 0-5v PWM, 0-10v PWM, 0-5v Analog or 0-10v Analog signal. The 0-10v Analog signal is comparable to the 0-10v ports on an Apex. These ports are great for LED drivers, lights and other 0-10v controllable equipment. You can find a variety of equipment on Bulk Reef Supply using the following link. Note you may not have full control based on software features.

0-10v Equipment available at Bulk Reef Supply

To use the equipment extension for your own project you need to connect 14 PWM signals and a common Ground. 6 signals can be digital however you won't have adjustable DC ports, instead only on/off

Equipment Extension User Manual

Package Includes

  • Equipment extension circuit board fully assembled
  • Faceplate
  • 15 pluggable screw terminal connectors

Equipment Extension Details

This extension allows you to connect and control LED drivers, 12-24v DC devices and 0-10v controllable equipment such as lights or Jebao compatible pumps.

  • 6, 12v - 24v DC ports
  • 6 emergency backup ports for DC ports
  • 8 auxiliary ports that can be independently switched between 0-5v PWM, 0-10v PWM, 0-5v Analog or 0-10v Analog signals

Hardware Features

  • 12v - 24v DC input
  • Highly efficient reverse polarity protection on main DC input
  • Each DC port can support up to 4 amps which is 50w at 12v or 100w at 24v, maximum between all ports is 5 amps
  • 12-bit PWM signals
  • Auxiliary ports support up to 20mA each

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Reef-pi Equipment Extension - DIY Kit

  • Product Code: DIYEquipV3Ra
  • Availability: In Stock
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Available Options

Name Product Quantity Price
Reversible Float Switch + $3.49 USD
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