AST-CAN485 I/O Shield (24V) Hookup Guide

Contributors: Alex the Giant, Ell C, JamesBM
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The AST-CAN485 I/O Shield (24) is an Arduino shield that will allow the user to interface the AST-CAN485 Dev Board with 24V inputs and outputs, which expands its usefulness into industrial systems.

SparkFun AST-CAN485 I/O Shield (24V)


Required Materials

To follow along with this tutorial, you will need the following materials. You may not need everything though depending on what you have. Add it to your cart, read through the guide, and adjust the cart as necessary.


Depending on your setup, you will need a soldering iron, solder, and general soldering accessories to solder pins to the AST-CAN485. You will also need a flat head and wire strippers to connect wires to the screw terminals.

Soldering Iron - 60W (Adjustable Temperature)

Soldering Iron - 60W (Adjustable Temperature)

Solder Lead Free - 15-gram Tube

Solder Lead Free - 15-gram Tube

Pocket Screwdriver Set

Pocket Screwdriver Set


Wire Strippers - 20-30AWG

3 Retired

Suggested Reading

We recommend checking out the AST-CAN485 Hookup Guide to get started with the board. Depending on your setup, you may need to install custom libraries and board add-ons.

AST-CAN485 Hookup Guide

March 1, 2018

The AST CAN485 is a miniature Arduino in the compact form factor of the ProMini. In addition to all the usual features it has on-board CAN and RS485 ports enabling quick and easy interfacing to a multitude of industrial devices.

Also, if you aren’t familiar with the following concepts, we recommend checking out these tutorials before continuing.

Working with Wire

How to strip, crimp, and work with wire.