Pre-loaded with open source firmware. Specifically configured for use with the SIO Control Plugin for OctoPrint. This controller is based on a ESP32-WROOM-32E module. It is ideal for adding IO to your OctoPrint instances. There are 13 configured IO points for use from OctoPrint; 2 Relay out, 4 designated Inputs and 6 configurable (default to INPUT_PULLUP) points. It's got plenty of IO for your project.

With a SerialIO board, you can take remote control of things like the Power supply, lights, and just about anything you might want to turn on and off. Also you can monitor inputs like a filament runout sensor or local physical buttons. It has built in support for a physical E-Stop if you want that extra safety right at your printer.

If you are an arduino enthusiast you can access and modify the firmware to add special features just for your setup. Or ask us to do that if you don't know how.

There are a few other versions of this board available as well.

• 4 relay module
• 2 relay full Kit

IO Specifications

• 2 onboard relays mapped to G16,G17 [IO 11-12]
• 1 status LED mapped to G23 and [IO 13]
• 4 input lines (3.3v) mapped to G34,G35,G36[svp],G39[svn] as [IO 0-3] (Available as Dupont posts IO Points)
• 6 configurable IO (3.3v) mapped to G0,5,12,13,14,33,25 as [IO 4-10] (Available as Dupont posts IO Points)
• This board will come with firmware preloaded to use with the SIOControl OctoPrint Plugin.

What is in the box?

• The IO Control board 2 Relay version (With Latest SIOControl Firmware installed)
• 2 2x20 Dupont headers
• 1 1x6 header for the programing interface.

Don't forget to pick up a UART Cable to make the connection to you PC/Rasperry Pi. You might also want to pick up a Power blocker cable (cant get this anywhere else) It's the best way to isolate your printers power from you Raspberry Pi or PC. See Options when purchasing.

You can also get this as a full kit.

Plug and play Serial IO for your Octoprint instance. Comes with a case, breakout terminal module for the additional 11 IO connections, USB Serial UART cable, and detailed instructions on how to setup and use the plugin. See this listing.

If you are looking for something a bit more custom, reach out and let us know. We likely can get you hooked up.