Click here to download the Universal Arduino Telegram Bot library.

To interact with the Telegram bot, we’ll use the Universal Telegram Bot Library created by Brian Lough that provides an easy interface for the Telegram Bot API.įollow the next steps to install the latest release of the library.

Installing the ESP32 Board in Arduino IDE (Windows, Mac OS X, Linux).

We’ll program the ESP32-CAM using Arduino IDE, so make sure you have the ESP32 add-on installed in your Arduino IDE. We’re using the ESP32-CAM AI-Thinker Module. For this reason, if you want to use our PCB, you need the same ESP32-CAM board. The PCB shield is designed to be stacked to the ESP32-CAM. Additionally, you’ll receive a notification with a new photo whenever motion is detected. For the moment we’ll create a Telegram bot for the ESP32-CAM that allows you to control your board from anywhere to request a photo, sensor readings or control the flash. Later you will find a generic triple adapter here, as you see in the picture, which allows to use other sensors as well. For this we will use a ready-made PCB shield (link: ), orderable at JLCPCB, to attach components like sensor and camera. This makes the linker happy and allows your program to build.In this project we’ll create a Telegram bot for the ESP32-CAM AI-Thinker board with a PIR motion sensor, a BME280 temperature (humidity and pressure sensor). the program file that contains your start and loop functions). The magic thing to know is that if any of your libraries use Wire.h or SPI.h you must Include them in the main source file (i.e. It’s one of those horrible situations where you have to know the “magic” trick to make it work.

I’ve had this before, it is very frustrating. The compiler kept complaining about the Wire.h and SPI.h libraries not being available. I’d added the AdaFruit libraries and at that point my program broke. I’ve been creating a “Connected Little Boxes” driver for the BME280 environmental sensor (a personal favourite of mine). I hardly ever use them personally, I rely on people much cleverer than me to create libraries that I can use to talk to the hardware I want to use.

They’re used by programs to communicate with devices over the I2C and SPI busses.

The Wire.h and SPI.h Arduino libraries are kind of important.

Wire arduino library