Lesson25- how to send alert message to Whatsapp by KC868-A4 A8 (ESP32)

[admin]

1527 code support.

[captaincringe]

All RF say 433 MHz or 433.92 MHz..
What do you mean with the chip code?

He is likely talking about the specific coding or modulation scheme used to transmit data wirelessly at a particular frequency, such as 433MHz or 433.92MHz.

[admin]

the RF module frequency is fixed.

[hery16]

In Lesson 25, you'll learn how to send alert messages to WhatsApp using the KC868-A4 A8 (ESP32). This tutorial provides valuable insights into integrating IoT devices with messaging platforms, enhancing remote monitoring and communication capabilities for various applications. Exciting possibilities await with this innovative technology integration!

[jack79]

In Lesson 25, you'll learn how to send alert messages to WhatsApp using the KC868-A4 A8 (ESP32). This tutorial provides valuable insights into integrating IoT devices with messaging platforms, enhancing remote monitoring and communication capabilities for various applications. Exciting possibilities await with this innovative technology integration!

Lesson 25 offers an exciting dive into sending alert messages to WhatsApp using the KC868-A4 A8 (ESP32). This integration enhances IoT capabilities, improving remote monitoring and communication for diverse applications. Innovative and practical.

[raymond8668]

You need to get the apikey form the bot before using the API:

1. Add the phone number +34 644 56 55 18  into your Phone Contacts. (Name it it as you wish)

2. Send this message "I allow callmebot to send me messages" to the new Contact created (using WhatsApp of course)

3. Wait until you receive the message "API Activated for your phone number. Your APIKEY is 123123" from the bot. As this is still in beta testing, the activation can take up to 2 minutes.

4. The WhatsApp message from the bot will contain the apikey needed to send messages using the API.
You can send text messages using the API after receiving the confirmation.

Example:


5. Enjoy

How to send a WhatsApp text message

https://api.callmebot.com/whatsapp.php?phone=[phone_number]&text=[message]&apikey=[your_apikey]

[phone_number]: Is your phone number asociated to your WhatsApp including the country code. (Ex: +34 123 123 123).

[text]: Message to send (urlencoded). You can use this online converter to encode the message. (i.e. %20 for space, %0A for new lines). WhatsApp formatting characters are allowed (i.e "*" for bold, etc.). Check here how to include emoticons in the message.

[your_apikey]: The apikey that you received during the activation process (step 4-5 above)

Example:

https://api.callmebot.com/whatsapp.php?p...1234567890
If you have problems building the URL, you can try the Web Browser assistant to test the API.

As this API is in beta testing, the messages can be delayed up to 1 minute.


Preparing 433MHz RF wireless sensor

Welding wireless module to KC868-A4 or KC868-A8 PCB board.

Preparing Arduino IDE

install RCSwitch library online.
source code download: 
you need to change WiFi ssid, password, apiKey, phone number, sensor_address, message_to_whatsapp by yourself.

[raymond8668]

hi admin, may i know if i want digital input or digital output activated send alert to watsapp, is it use digital write or digital read instead of rcswitch?

[admin]

you need use digital read.

[raymond8668]

hi admin, I was trying to upload the WhatsApp program to kc868-A4 but it will have error showing HTTPClient:no such file or directory may I know the issue? I had downloaded quite a number of http libraries.

[admin]

post your error photo, what arduino version you are using?
we use ESP32 board V1 version in arduino IDE.