Page 146 - KEC Khaitan C6 Flipbook
P. 146
∑ Give your channel a name, like Temperature Data.
∑ In the Name Field , type Temperature (this tells ThingSpeak that we will be sending
temperature data).
∑ Scroll down and click Save Channel.
5. Get Your Channel ID and API Key
∑ After saving, ThingSpeak will show you some numbers and codes:
o Channel ID: A number that identifies your channel.
o Write API Key: A special code that allows Micro:Bit to send data to your
channel.
∑ Important to write these down or keep the page open because you’ll need them
later.
Step 2 Connect the Micro:bit to the WiFi Shield
The Micro:bit cannot connect to the Internet on its own, so we use a WiFi shield like the
ESP01, ESP8266 or ESP32. This shield will connect to the internet and send the data from
the Micro:bit to ThingSpeak.
• You will need to connect the Micro:bit to the WiFi shield using wires. The WiFi shield has
pins that you can connect to the Micro:bit.
∑ The WiFi shield uses serial communication to talk to the Micro:bit. This means it
sends and receives data through specific pins on both devices.
Step 3 Program the Micro:bit to Send Data
Now that your Micro:bit is connected to the WiFi shield, you need to write a program
(code) to tell the Micro:bit to send sensor data to ThingSpeak.
∑ You will use the Arduino IDE (a software to write programs for the ESP8266 or ESP32)
to write this code.
∑ The code will tell the Micro:bit to connect to WiFi, read sensor data, and send that
data to ThingSpeak using your Channel ID and API Key.
Step 4 Upload the Code and Test
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