EzDIO Expansion Board

Hardware specifications

Features

EzDIO is the third expansion board CIRCUS Pi has designed for the Easy learning series. It carries over the elements of the earlier boards, including ease of use, high compatibility, and good expandability. It is the same size as the EZ Start Kit/EZ Start Kit+, still accepts a micro:bit, LinkIt 7697, or ESP32 controller board, and has cross-shaped holes at the four corners that match LEGO brick spacing.

● You decide which features to use
When the EZ Start Kit no longer meets the needs of your project, you can choose the EzDIO. Unlike the EZ Start Kit, the EzDIO removes all built-in features and replaces them with keyed sockets for easy connection and common Dupont pin headers. You can pick Grove and M5Stack modules, which also use keyed sockets, or the Arduino and micro:bit sensor modules you already have on hand to build your own projects.

● Enough power for your needs
This version strengthens the power supply to every connector socket and adds a DC jack alongside the existing power input. You can use any power supply in the DC 5–12 V range, which leaves enough power for many modules without causing malfunctions.

● Convenient I/O design
The two most common ways of connecting modules are laid out on the EzDIO to match how users work. The pin reference chart that used to be printed on the back of the expansion board is now printed right next to the Dupont pin headers, which solves the problem of not being able to see the back once the board is mounted in a device. The neat printing makes pin numbers easier to look up, so you won’t pick the wrong number and cause a malfunction. Among the keyed sockets, dedicated I2C and UART keyed sockets have been added to make it easier to manage and connect the matching modules.

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