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Hi5 bot (ESP-version)

Send Hi5's across the globe with single click

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This project is made with ESP 32 as it's heart, it uses MQTT protocol to receive messages from friends and saves them in a stack, when ever we receive an hi5 the hand rises a little bit indicating hi5's are waiting for us. When ever we place it before the hand of the bot it will starting giving hi5 for each person and shows their name on the LCD display attached to it. And sensing of hand is done with the help of ultra sonic sensor.

Links for hardware connections
Interfacing of ultra sonic sensor with ESP 32
https://www.instructables.com/Pocket-Size-Ultrasonic-Measuring-Tool-With-ESP32/
Interfacing of LCD display with ESP32
https://deepbluembedded.com/esp32-lcd-display-16x2-without-i2c-arduino/
Interfacing of servo motor with ESP32
https://dronebotworkshop.com/esp32-servo/
MQTT
https://en.wikipedia.org/wiki/MQTT
I used HiveMq broker for MQTT protocol, for this protocol the topic which we are subscribing is important small mistakes can mess up a lot in the project.

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