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Esp32.co.uk
  • Arduino

Arduino UNO R3 Pinout: GPIO, PWM, ADC, SPI, I2C and Interrupts

Arduino UNO R3 pinout guide: ATmega328P GPIO, PWM, ADC, UART, I2C, SPI, interrupts, power pins, current limits and safe wiring explained.

  • panakos
  • 27 September 2026
  • 2 Comments
  • Home Assistant Integration, Sensors & Components

VL53L0X vs VL53L1X: Best Time-of-Flight Sensor for ESP32

Compare VL53L0X vs VL53L1X for ESP32 projects. Range, field of view, speed, ESPHome support, wiring, multi-sensor use and which ToF sensor to choose.

  • panakos
  • 26 September 2026
  • Sensors & Components

INA219 vs INA226 vs INA260: Best Current Sensor for ESP32

Compare INA219 vs INA226 vs INA260 for ESP32 current and power monitoring. Voltage range, shunts, accuracy, ESPHome support, wiring and best use cases.

  • panakos
  • 26 September 2026
  • ESPHome, Home Assistant Integration, Sensors & Components

MCP23017 with ESP32 and ESPHome: 16 Extra GPIOs over I²C

Add 16 digital GPIOs to an ESP32 with the MCP23017 I2C expander. ESPHome wiring, addresses, pull-ups, interrupts, multiple chips, Home Assistant and troubleshooting.

  • panakos
  • 25 September 2026
  • ESPHome, Home Assistant Integration, Sensors & Components

TCA9548A I2C Multiplexer with ESP32: Multiple Sensors at the Same Address

Connect eight I2C channels to an ESP32 with TCA9548A. Full ESPHome YAML for identical-address AHT20 sensors, Arduino channel scanning, 0x70–0x77 addresses, pull-ups, reset and troubleshooting.

  • panakos
  • 23 September 2026
  • ESPHome, Home Assistant Integration, Sensors & Components

AHT20 with ESP32 and ESPHome: Wiring, Calibration and Home Assistant

Connect an AHT20 temperature and humidity sensor to ESP32 and ESPHome. Covers 0x38 wiring, AHT20 variant setup, calibration offsets, filtering, self-heating, placement, condensation and Home Assistant.

  • panakos
  • 22 September 2026
  • Getting Started, Home Assistant Integration, Sensors & Components

ESP32 GPIO Expanders: MCP23017 vs PCF8574 vs PCF8575

Compare MCP23017, PCF8574 and PCF8575 GPIO expanders for ESP32 and ESPHome: pin count, I2C speed, interrupts, pull-ups, relay and button use, wiring and example YAML.

  • panakos
  • 14 September 2026
  • Raspberry Pi Guides

Raspberry Pi Pico 2 / RP2350 Pinout + Safe GPIOs & Interfaces (2026)

Complete Raspberry Pi Pico 2 / RP2350 pinout guide for 2026: safe GPIOs, ADC, I2C, SPI, UART, PWM, PIO, USB, power pins, BOOTSEL, SWD and MicroPython/Arduino setup.

  • panakos
  • 4 September 2026
  • 5 Comments
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