ESP32 Serial Communication over Bluetooth Using Arduino IDE
Serial communication can be done using Bluetooth. ESP32 features dual Bluetooth which can be configured in receiving data from multiple sources.
Maximum Voltage ESP32 Can Take
Maximum working voltage of ESP32 is 3.3V however we can also use voltage greater than 3.3V at its VIN pin. Using a VIN pin maximum of 15V can be applied.
ESP32 PWM with MicroPython Using Thonny IDE
To configure PWM signal in MicroPython we have to import PWM class from the machine module. PWM in ESP32 helps in getting analog results using digital signals.
How to Scan I2C Address in ESP32 Using Arduino IDE
I2C devices with ESP32 must have separate I2C addresses as two devices with the same address cannot be connected over a single I2C line.
Push Button with ESP32 – Arduino IDE
Push button can be interfaced with ESP32 using the digital input pins. Digital read function can read input from the push button. Find out more in this guide.
ESP32 Digital Inputs and Digital Outputs Using Arduino IDE
ESP32 can read and write digital data using the GPIO pins. ESP32 has multiple pins that can act both as digital input and output. Find out more in this guide.
ESP32 NTP Client-Server: Get Date and Time – Arduino IDE
ESP32 inbuilt timer is not so accurate so we can use NTP server to get real time of specific time zone and use it to execute instructions. Read more here.
ESP32 – Bluetooth Classic vs Bluetooth Low Energy (BLE)
ESP32 contains dual Bluetooth. Bluetooth classic for high end requirements and Bluetooth low energy for power saving applications. Find out more in this guide.
ESP32 with PIR Motion Sensor using Interrupts and Timers – Arduino IDE
A PIR sensor with ESP32 measures infrared (IR) light radiating from objects in its field of view. To trigger a response using the PIR millis function is used.
Connect to the Strongest WiFi Network in ESP32 Using WiFiMulti Function
ESP32 connects to multiple networks using WiFiMulti function. If connection discontinues it will connect to the next strongest network. Read more in this guide.
SPI (Serial Peripheral Interface) in ESP32 Using Arduino IDE
ESP32 has SPI pins by default however we can configure new pins for SPI.Two SPI buses VSPI and HSPI can be used for external peripherals.