Introduction
This guide shows you how to transmit data from a ESP32 UWB, via a Notecard, and to Notehub. It also shows how to create a project in Notehub, such that the transmitted data can be viewed.
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ESP32 UWB
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Notecarrier-A
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USB Type A to USB Micro B
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4 male to female wires
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Connect the following pins:
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3V3 on ESP32 to V+ on Notecarrier
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GND (the GND next to the 3V3 pin is the one we used) on ESP32 to GND on Notecarrier
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IO21 on ESP32 to SDA on Notecarrier
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IO22 on ESP32 to SCL on Notecarrier
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Connect the ESP32 UWB to your computer using USB
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Download Arduino IDE : https://www.arduino.cc/en/software
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Once downloaded, choose the correct board:
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Navigate to Tools->Board->Boards Manager
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Search “esp32” and click “Install”
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Once installed (can take a few minutes), navigate to Tools->Board->esp32 and select “ESP32 Wrover Module”
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Select the port by navigating to Tools->Port and select the port you want to use. In my case it was called “/dev/cu.usbserial-02310491”
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Install the Notecard library: https://dev.blues.io/tools-and-sdks/libr...
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Each Notecard comes with 5000 “consumption credits.” To utilize these credits, you need to create a Notehub account. After setting up a Notehub account, you can create a project. Then, by adding the ProjectUID to your code, the data sent from the Notecard will appear in your Project.
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Sign up to Notehub: https://notehub.io/sign-up
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Create a project by clicking “Create Project”. Something similar to image 1 should pop up.
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Add a project name and complete the ProductUID. Click "Create Project."
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The ProductUID is circled in red in the second image. Copy this ProductUID.
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Copy the code from the image into Arduino IDE. The code is a basic “Hello World,” which sends a hardcoded temperature and humidity value.
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Under #define productUID "FILL_IN_PRODUCTUID", add the ProductUID from Notehub. It should look something like #define productUID "edu.bucknell.XXX:testing"
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Compile and upload the code to the ESP32 by clicking the "->" icon in Arduino IDE
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In Notehub, click on the project you have created.
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Select "Events"
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Data should now have been sent to Notehub, and it should look something like the image.
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