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content/hardware/02.hero/boards/uno-r4-minima/tutorials/can/can.md

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@@ -20,20 +20,20 @@ The goals of this tutorial are:
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## Hardware & Software Needed
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- Arduino IDE ([online](https://create.arduino.cc/) or [offline](https://www.arduino.cc/en/main/software)).
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- [Arduino R4 Minima]().
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- [Arduino R4 Minima](/hardware/uno-r4-minima).
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- [Arduino Renesas Core](https://github.com/bcmi-labs/ArduinoCore-renesas)
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- CAN transceiver module\*
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- Jumper wires
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In this tutorial, we are using a CANXXXXX breakout module.
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In this tutorial, we are using a SN65HVD230 breakout module.
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## Controller Area Network (CAN)
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The CAN bus uses two wires: **CAN high** and **CAN low**. On the Arduino UNO R4 Minima, these pins are:
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- D5/CANRX0 (receive)
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- D4/CANTX0 (transmit)
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To communicate with other CAN devices however, you need a transceiver module. In this tutorial, we will be using a CANXXXX module based on the XXX chip. To connect this, you can follow the circuit diagram available in the section below.
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To communicate with other CAN devices however, you need a transceiver module. In this tutorial, we will be using a SN65HVD230 breakout. To connect this, you can follow the circuit diagram available in the section below.
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For this tutorial, we will use a simple example that sends a CAN message between two UNO R4 Minima devices. If you wish, you can also connect an existing CAN device to the UNO R4 Minima.
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| CANH (HIGH) | CANH (HIGH) |
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| CANL (LOW) | CANL (LOW) |
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The complete circuit diagram can be seen below:
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![CAN circuit.]()
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## Code Examples
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The following code examples needs to be uploaded to each of the UNO R4 Minima boards, one will send a message, one will receive it. These examples are available in the Renesas core, and using the Arduino IDE, you can access them by navigating to **File > Examples > Arduino_CAN > CANWrite/CANRead**
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This tutorial shows how to use the CAN bus available on the UNO R4 Minima, and how to send and receive data using the Arduino_CAN library.
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Read more about this board in the [Arduino UNO R4 Minima documentation]().
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Read more about this board in the [Arduino UNO R4 Minima documentation](/hardware/uno-r4-minima).

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