WEEK2

(last update 09/02/2023, Yibing)


Process checking

  • set up the car kit by following the instrumentation
figure-1
  • test the receiver circuit

figure-2


figure3

  • get Bluetooth and AT commands connected so 'gestures' can be sent to the receiver later.

Issues occurred

  • We found some problems when connecting Bluetooth HC-05 to AT command. Group members have tried all the bauds and the different devices but we still can not figure out which part failed Bluetooth. 
Potential limitations of this project

  • Range Limitations: Bluetooth has a limited range of about 10 meters, which may not be sufficient for some car control applications. If you need to control your car from a greater distance, you may need to use other wireless technologies such as Zigbee or Wi-Fi.

  • Power Consumption: Bluetooth modules like the HC-05 consume a relatively high amount of power compared to other wireless technologies. This can be a challenge when designing a battery-powered car control system

  • Interference: Bluetooth operates in the 2.4GHz ISM band, which is also used by other wireless technologies like Wi-Fi and Zigbee. This can result in interference and reduce the reliability of wireless communication.

  • Security: Bluetooth is a relatively secure protocol, but it can still be vulnerable to hacking or eavesdropping. You may need to implement additional security measures to ensure the safety of your car control system.

  • Complexity: Integrating the HC-05 into a car control system can be complex, especially if you are new to wireless communication. You will need to understand how to configure the module, send and receive data, and manage the communication between the car and the remote device.

Despite these limitations, the HC-05 is still a popular choice for car control projects due to its low cost, ease of use, and wide availability. However, it's important to consider these limitations and choose the best wireless technology for your specific application.

Additional tasks

  • see if other components/systems could replace the Bluetooth HC-05


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