KOI - Internet of Things (KOI v1.9.5)
The Wifi capabilities of KOI allows it to access IoT platforms.
Connecting to IoT Platforms
Load the KOI Extension: https://github.com/KittenBot/pxt-koi
Blocks for Voice Recognition:
This tutorial just serves as a general example for communicating with MQTT servers, different MQTT servers may require different credentials.
Refer to this page for ThingSpeak tutorials: ThingSpeak Tutorial
1: Download the program to the Micro:bit.
2: Press A and B at the same time and wait for KOI to connect to the Wifi network.
|KOI can store the Wifi and MQTT credentials, there is no need to run these blocks everytime we use these functions.|
3: Press A to upload a random number to the MQTT.
4: Press B to read the data from the MQTT.
5: KOI will display the number on its screen.
Extension Version and Updates
There may be updates to extensions periodically, please refer to the following link to update/downgrade your extension.
Q1: There is no reaction after pressing the buttons on the Micro:bit.
A1: This is because KOI has a longer boot time than Micro:bit. When the power is turned on, Micro:bit has already ran the code for KOI initialization before KOI is ready.
Solution: Reset your Micro:bit after KOI has been turned on. (The trick is to let KOI power on completely before initialization.)
Q2: Does KOI work with 3V input?
A2: No, KOI only works with 5V.
If you have any question, please feel free to contact us at Discord, we will always be there to help.