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Experiment

Time allocation 10 min.

Transmitting the pulse count​

Experiment Description​

As part of the experiment, we will transmit the number of pulses using an LED or a magnetic sensor.

Experiment Step​

1. Building the Sensor Set​

Modules in the setup:​

  • Core Module
  • Mini Battery Module
  • Sensor Module
tip

Don’t forget to connect your pulse counter to the Sensor Module according to this diagram:

2. Uploading the firmware​

  • Connect the Core Module to your computer.
  • In the Playground application, under the Firmware tab, upload the firmware twr-radio-pulse-counter.
  • If you haven’t installed Playground yet, download and install it.
tip

Take a look at the detailed guide for uploading firmware to the Core Module.

3. Connecting the units to Playground​

  1. Insert the Radio Dongle into your computer’s USB port.
  2. Open the Playground application and go to the Devices tab.
  3. Select your Radio Dongle from the list of USB devices and click Connect.
  4. Click Start pairing.
  5. Insert the batteries into the Sensor set – successful pairing will be indicated by the appearance of a device named wireless-pulse-counter:0.

4. Setting up the pulse count display function​

  1. Switch to the Functions tab.
  2. Perform the flow import:
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  1. Switch to the Messages tab - if everything went correctly, you will see incoming messages from the Sensor set.
  2. Switch to the Dashboard tab – a graph displaying the pulse count will appear.
info

The flow also includes an automatic alert if the pulse count reaches 30 or 70.