- July 25, 2018
July 25, 2018 - Sequent Microsystems, a tech startup from Cupertino, CA has launched a Kickstarter campaign for a new industrial expansion card for the Raspberry Pi platform. Loaded with inputs, outputs, and relays, the card will be designed for the Industrial Automation market. According to the KS page, the card attempts to integrate as many Industrial Automation functions as possible into the format of the Raspberry Pi.
Shipment of these cards is expected by January 2019.
The MegaIO-IND card features Optically Isolated 4-20mA Inputs and Outputs, 0-10V Inputs and Outputs, Optically Isolated Digital Inputs and Open Drain Outputs, Optically and Galvanically Isolated 10A/250V Relays with status LED's, Standard Communication Ports, Configurable Interrupts and a Real Time Clock with Battery Backup.
The MegaIO-IND can be ordered with screw-type terminal blocks, as shown in the picture below, or upgraded for a small extra charge to pluggable connectors. Pluggable connectors offer a way of removing the cards after field installation, for repairs or upgrades.
The Kickstarter campaign also offers a few low cost accessories to the MegaIO-IND and Raspberry Pi that can be added to any pledge:
- Raspberry Pi 8-Relay Card ($20) - add 8 additional relays
- Raspberry Pi DIN-Rail Kit ($7) - install Raspberry Pi on a DIN-Rail
- Raspberry Pi Breakout Card ($9) - provide screw terminals for all GPIO pins
- IO Terminal Block Upgrade ($15) - upgrade IO screw terminals to pluggable
- Relay Terminal Block Upgrade ($5) - upgrade Relay screw terminals to pluggable
The key specifications of the Raspberry Pi Mega-IO Expansion Card include:
- Four Optically Isolated 4-20mA Inputs
- Four 4-20mA Outputs
- Four 0-10V Inputs
- Four 0-10V Outputs
- Four Optically Isolated Digital Inputs
- Four Optically Isolated Open Drain Outputs
- Four Optically Isolated 10A/250V Relays
- Four Relay LED's
- Four General Purpose LED's
- RS485, CAN, 1 Wire communication
- Real Time Clock with Battery Backup
- Configurable Interrupts
The MegaIO-IND can be stacked up to four cards high. Command Line, Python and CODESYS drivers can be downloaded from GitHub. Programming examples will be made available for all environments.
The specs boast better than 0.2% linearity on all current channels, and better than 0.15% on voltage channels.