Stackable Building Automation Card for Raspberry Pi

Brings to Raspberry Pi all IO’s needed for Building Automation Systems. Eight universal inputs can be jumper selected to process 0-10V signals, read 1K or 10K temperature sensors or dry contact counters. Four TRIAC outputs can drive loads up to 0.5A and 500V. Four 0-10V outputs can control light dimmers. Status LEDs display the state of all outputs. Keep time indefinitely even during power failure using the Real Time Clock with battery backup. Activate the hardware watchdog to monitor and power cycle the Raspberry Pi in case of software lockup. TVS diodes on all inputs protect the card for external ESD, and the on-board resettable fuse protects is from accidental shorts.

Features

• Eight Universal Inputs, jumper selectable
  • 1K or 10K thermistors
  • 0-10V analogue inputs
  • Dry contact/counter inputs
• Four AC Triac Outputs, 0.5A/500V
• Four 0-10V Outputs
• 24VAC Power Supply
• Four General Purpose LEDs
• RS485 In and Out ports
• Real Time Clock with Battery Backup
• Pluggable Connectors
• Hardware Watchdog
• Status LEDs on all Digital Inputs and Outputs
• TVS protection on all inputs
• On-board resettable fuse
• Eight Level Stackable
• Command line, Python drivers
• Node-Red code examples

These cards share the I2C bus using only two of the Raspberry Pi’s GPIO pins to manage up to eight cards. This feature leaves the remaining 24 GPIOs available for the user.

Kit contents

• Raspberry Pi Stackable Card for Building Automation
• Mounting hardware
  • Four M2.5x18mm male-female standoffs
  • Four M2.5x5mm screws
  • Four M2.5 nylon nuts
• Two jumpers
• Four 8-pin female mating connector plugs for IO's
• Two 2-pin female mating connector plug for RS485 IN/OUT
• One 2-pin female mating connector plug for power

Specification