Summary
In this chapter dedicated to IoT, we have learned some essential topics. First, we got to know the solar cells used to power small electronic devices. Next, we learned about the B25 voltage sensor and how to connect it to the STM32.
Later, we learned how to create a program to read data from the voltage sensor. With the voltage reading, we connect our STM32 to a NodeMCU board through serial communication. We create a program to send the voltage value between microcontrollers. Finally, we use an app to visualize the sensor data from the cloud.
At the end of the IoT topics, you have solid skills to create applications and devices connected to the internet and intranets. Your portfolio of projects has been strengthened to enable you to more easily find a job opportunity in this growth area.
In the next chapter, you will start developing projects that will help you create electronic support devices to assist with the COVID-19 pandemic.