Merge pull request #1127 from arduino/karlsoderby/r4-wifi-maintenance-update

Karlsoderby/r4 wifi maintenance update

Author: karlsoderby

content/hardware/02.hero/boards/uno-r4-minima/tech-specs.md

@@ -1 +1,3 @@
-Here you will find the technical specifications for the Arduino® UNO R4 Minima.
+Here you will find the technical specifications for the Arduino® UNO R4 Minima.
+
+**Maximum current draw per pin:** the UNO R4 series' maximum current draw per GPIO is **8 mA**, which is significantly lower than previous versions. Exceeding this limit may damage your pin / board.

content/hardware/02.hero/boards/uno-r4-wifi/datasheet/assets/ABX00087-pinout.png

@@ -120,7 +120,7 @@ In addition, it features an ESP32-S3 module for Wi-Fi® & Bluetooth® connectivi
 | U4          | TXB0108DQSR logic level translator (5 V - 3.3 V) |
 | U5          | SGM2205-3.3XKC3G/TR 3.3 V linear regulator       |
 | U6          | NLASB3157DFT2G Multiplexer                       |
-| U_LEDMATRIX | 12x8 LED Red Matrix                             |
+| U_LEDMATRIX | 12x8 LED Red Matrix                              |
 | M1          | ESP32-S3-MINI-1-N8                               |
 | PB1         | RESET Button                                     |
 | JANALOG     | Analog input/output headers                      |
@@ -468,6 +468,7 @@ Hereby, Arduino S.r.l. declares that this product is in compliance with essentia
 
 ## Change Log
 
-| Date       | **Revision** | **Changes**                        |
-|------------|--------------|------------------------------------|
-| 08/06/2023 | 1            | First Release                      |
+| Date       | **Revision** | **Changes**        |
+| ---------- | ------------ | ------------------ |
+| 08/06/2023 | 1            | First Release      |
+| 30/06/2023 | 2            | Update Pinout File |

content/hardware/02.hero/boards/uno-r4-wifi/datasheet/datasheet.md

@@ -1 +1,7 @@
-Here you will find the technical specifications for the Arduino® UNO R4 WiFi.
+Here you will find the technical specifications for the Arduino® UNO R4 WiFi.
+
+**Note on ESP header:** the ESP32-S3 module on this board operates on 3.3 V. The ESP header located close to the USB-C® connector is 3.3V only and should not be connected to 5 V. This may damage your board.
+
+**Note on Qwiic connector:** the Qwiic connector on this board is connected to a secondary I2C bus on this board, **IIC0**. This connector is **3.3 V only**, connecting higher voltages may damage your board. To initialize this bus, use `Wire1.begin()` instead.
+
+**Maximum current draw per pin:** the UNO R4 series' maximum current draw per GPIO is **8 mA**, which is significantly lower than previous versions. Exceeding this limit may damage your pin / board.

content/hardware/02.hero/boards/uno-r4-wifi/downloads/ABX00087-full-pinout.pdf

@@ -30,8 +30,8 @@ The goals of this tutorial are:
 ## Controller Area Network (CAN)
 
 The CAN bus uses two wires: **CAN high** and **CAN low**. On the UNO R4 WiFi, these pins are: 
-- D5/CANRX0 (receive)
-- D4/CANTX0 (transmit)
+- D13/CANRX0 (receive)
+- D10/CANTX0 (transmit)
 
 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.
 
@@ -43,9 +43,9 @@ To connect the CAN transceiver, follow the table and circuit diagram below:
 
 | UNO R4 WiFi | CAN Transceiver |
 | ------------- | --------------- |
-| D5 (CANRX0)   | CANRX           |
-| D4 (CANTX0)   | CANTX           |
-| 5V            | VIN/VCC/5V      |
+| D13 (CANRX0)   | CANRX           |
+| D10 (CANTX0)   | CANTX           |
+| 3.3V         | VIN/VCC/5V      |
 | GND           | GND             |
 
 Then, between the CAN transceivers, connect the following: