arduino

• IDE

• cli

• Pinout

• ESP32

• Uno

  • Q

  • R3

• OLED

  • IDE

• 3D Case

IDE

• ~/.arduinoIDE/arduino-cli.yaml (Linux/macOS)

• C:\Users\YourUsername.arduinoIDE\arduino-cli.yaml (Windows)

cd D:\Program Files\Arduino IDE\resources\app\lib\backend\resources

# fix: Client.Timeout
arduino-cli config set network.connection_timeout 600s

# fix: following symlink ... cannot find the path specified
arduino-cli config get directories.data
arduino-cli config set directories.data TARGET_DIR

cli

arduino-cli board list

Pinout

Feature	GPIO (General-Purpose I/O)	PWM (Pulse Width Modulation)	ADC (Analog-to-Digital Converter)
Input/Output	Both Input and Output.	Output only.	Input only.
Arduino Function	pinMode(), digitalWrite(), digitalRead()	analogWrite()	analogRead()
Mark	D_	~D_	A_

AREF: http://tronixstuff.com/2013/12/12/arduino-tutorials-chapter-22-aref-pin/

ESP32

• All: https://products.espressif.com/#/product-comparison?names=ESP32-C3,ESP32-S3,ESP32-C6&type=SoC

• S3: https://docs.arduino.cc/hardware/nano-esp32/

• C3/C6/S3: https://wiki.seeedstudio.com/SeeedStudio_XIAO_Series_Introduction/#seeed-studio-xiao-series-comparison-table

Uno

https://www.arduino.cc/en/hardware/#uno-family

Q

• Debian-capable

• Qualcomm QRB2210 microprocessor (MPU), quad-core 2.0 GHz CPU

• real-time STM32U585 microcontroller (MCU)

• RAM: 2GB LPDDR4

• Storage: 16 GB eMMC built-in (no SD card required)

R3

Atmel AVR ATmega328P | 8-bit RISC | 16MIPS throughput at 16MHz

• https://ww1.microchip.com/downloads/en/DeviceDoc/Atmel-7810-Automotive-Microcontrollers-ATmega328P_Datasheet.pdf

https://store-usa.arduino.cc/products/arduino-uno-rev3

• INPUT VOLTAGE (LIMIT) 6-20V limit / 7-12V recommended

• DC CURRENT PER I/O PIN 20 mA

https://content.arduino.cc/assets/A000066-pinout.png

• 14 digital input/output pins (of which 6 can be used as PWM outputs)

• 6 analog inputs

OLED

• I2C: 100Khz - 3.4Mhz, many devices on the same bus

• SPI: 4Mhz and up to 100Mhz

IDE

• Sketch Menu -> Include Library -> Manage Libraries

  • Search: BusIO + adafruit ssd1306

• File -> Examples

SSD1306 Oled display: https://create.arduino.cc/projecthub/Arnov_Sharma_makes/0-96-inch-oled-getting-started-guide-78163a

// Declaration for an SSD1306 display connected to I2C (SDA, SCL pins)
// The pins for I2C are defined by the Wire-library. 
// On an arduino UNO:       A4(SDA), A5(SCL)
// On an arduino MEGA 2560: 20(SDA), 21(SCL)
// On an arduino LEONARDO:   2(SDA),  3(SCL), ...

• File -> Examples ---> ssd1306_128x32_spi

    // Declaration for SSD1306 display connected using software SPI (default case)
    #define OLED_MOSI   9
    #define OLED_CLK   10
    #define OLED_DC    11
    #define OLED_CS    12
    #define OLED_RESET 13

3D Case

Pro Mini | Wall | https://www.thingiverse.com/thing:2457807