Raspberry Pi 3 B/B+ and 4CH Relay case
thingiverse
A custom case for a Raspberry Pi 3 B/B+ that accommodates space for a four-channel relay is now available. This innovative design centers around the SainSmart four-channel relay board, which can be found on Amazon at https://www.amazon.ca/SainSmart-101-70-101-4-Channel-Relay-Module/dp/B0057OC5O8/ref=sr_1_3?ie=UTF8&qid=1529882645&sr=8-3&keywords=4+channel+relay. An update has been made to include a Python script example that allows users to toggle the relays and RPi pins on and off. For users of OctoPrint, the System Command Editor plugin (https://plugins.octoprint.org/plugins/systemcommandeditor/) can be used. To run the script, create a new system command with the following input: python3 {PATH TO SCRIPT}/toggle.py {PIN}.
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