Iris Cube->Arduino MEGA2560 Iris Edition R 1.3

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Warning: The BOM is automatically generated and may not match the actual situation. Please do not use the BOM table to place orders directly. Everything is subject to the PCB package and schematic values.

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Sequel: Iris Cube->Arduino MEGA2560 Iris Edition REV 2.1 If you don’t lack space, I recommend you use this!

Please check out: Iris Cube->Series Microcontroller Development/Verification/Core Board Introduction

Form Factor: Iris Cube Basic Small ( https://oshwhub.com/Iris-Cube/ICBasic )

The picture below is the prototype board of version 1.2. The pin colors are distinguished according to the register.

Another prototype board using long headers to explore the limits of expandability.

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The ATMega2560 development board has all IO leads (including IO not used by Arduino), on-board USB-UART conversion (CH340C), and can be used as a general Arduino 2560.

On the back of the board, the corresponding pin definitions in Arduino are marked (x means that Arduinio is not used), as well as a comparison table of some communication interfaces, which is convenient for newcomers like me and stupid loli who still only use Arduino after several years.

Don't ask me why Arduino's definition is so confusing, ask the Arduino team.

There are four LEDs on the board:

One is the power indicator light;

Two are UART0 (PE0, PE1) indicator lights;

One is the "L" light of Arduino's ancestral 13-pin (PB7).

There are three jumpers on the board (0603 0 ohm):

Two are MCU's UART0 (PE0, PE1) to CH340;

One is +5V to AVCC.

Just connect them all.

There are two optional resistors on the board:

The pull-up resistors of the IIC interface (PD0, PD1) are generally not connected.

I added IIC entirely because I personally prefer IIC and use IIC for everything.

Later note:

There is no 3.3V output because it is not a necessary function~~ (not because of laziness)~~ (2.0 will have it (Gu Gu Gu Gu* // Update: Version 2.0 is indeed available

The reason for emphasizing Arduino is to attract attention (although it is all true

satellite:

Peel off the main body of the USB to UART converter. After use, you can break it off and use it on other boards; place the AMS1117 in the original CH340C place to increase the 3.3V output. // Update: It should not be available anymore