Sending Blynk Messages to An LCD with micro:bit

Abdulrahman Alhamed
10 Mar 2023
Tutorial
Beginner
1304

In this tutorial, we'll show you how to set up your micro:bit and Blynk app to communicate with each other, allowing you to send messages from the app to the micro:bit, which will then display them on the connected LCD screen. But this project is not limited to just displaying messages. You can also use it to create reminders, make to-do lists, and more! The possibilities are endless, and we hope this tutorial will inspire you to explore different ways you can use this project to simplify your daily tasks.

Video Tutorial

Components Required

อุปกรณ์ฮาร์ดแวร์

เพิ่มในรถเข็น

Grove WiFi 8266 - IoT for micro:bit and beyond

THB220.00 THB205.61

x 1 หน่วย

เพิ่มในรถเข็น

REKA:BIT - บอร์ดขยายของ micro:bit

THB1,220.00 THB1,140.19

x 1 หน่วย

Connection

By following the diagram above:

Connect the grove Wi-Fi module to P15 and P16
For the LCD, connect GND to VSS, 3V3 to VDD, SDA to SDA, SCL to SCK

Blynk Setup

go to Blynk website, create a new account and log in
create a new template
from datastream add a virtual pin and change data type to (String)
then add a new device
select the template that you have created
now copy the token and paste it into the micro:bit code
on your phone, open Blynk app and click on micro:bit device
from the widget box, add a Terminal and select virtual pin 0

Code

Connect your micro:bit to your computer and open MakeCode editor to start programming.

Add “ESP8266 Cytron” extension
Add "micro:bit + LCD" extension using this link: https://github.com/cytrontrainee/microbit-lcm1602-14-lcd-extension
then follow the code block in the picture above
Type in the name and password of your WiFi
After completing the code, download it on microbit

You can also view and edit the code by clicking here!

Project Complete

Type the message in Blynk terminal and it will be displayed on the LCD