21 Oct

Specifications of the system - Blimp with 2 motors used for horizontal propagation connected to ESP32 microcontroller (Slave Device) NodeMCU with ESP 8266 acting as the master device 2.4GHz with ESP Now protocol is used for communication between the 2 devices A joystick controller is used...

21 Oct

This experiment demonstrates that by using ESP Now protocol we have the capability to control multiple blimps from a single joystick controller. We can switch between different control modes at the click of a button. In the following video - 1 ESP32 microcontroller is connected to the motors. 1...

07 Oct

I was looking for ways to control the motors using peripheral hardware. I initially used Keyboard to control the motors. The input characters were sent to an ESP32 device (Master) via serial communication. The data was sent to another ESP32 device (Slave) connected to the motor drivers. I used a 2.4...

28 Sep

Microcontroller - ESP32 Motor Driver - TB6612FNG Dual Motor Driver Propeller Size - 45mm (diameter) Communication - WIFI Module using Blynk I also found out that ESP32 does not have a native implementation of the AnalogWrite function. This has led to problems for PWM. I will look for a...

09 Sep

I determined the change in the signal strength of the network due to metal interference. I used the same setup as the previous experiment. Received Signal Strength Indicator (RSSI) was used as a metric to measure signal strength. ESP32 WIFI (2.4 GHz) A point to point connection was established u...

02 Sep

Motivation The objective of the experiments was to test various communication methods (different protocols and frequency) under different conditions. I am using the following communication devices – ESP32 Wifi Module – 2.4GHz ESP32 Bluetooth Low Energy – 2.4 GHz NRF24L01 module - 2.4GHz Lo...

30 Aug

Motivation – The Arduino IDE can only be used to monitor a single port. Arduino IDE does not allow multiple serial ports to be monitored simultaneously. Serial library can be used to read, write and print to different serial ports. Therefore, different ports can be monitored simultaneously from the...

30 Aug

To calculate the volume of helium required for neutral buoyancy based on the mass of components and blimp. Assumptions – Temperature is constant. The gas is purely helium The density of surrounding air is constant Atmospheric pressure is constant Derivations Using the equation - ...

31 Jul

Simulink Model I worked on the Coriolis force module in the Simulink model. I wrote the MATLAB function that calculates the Coriolis matrix. With the completion of this module, the dynamic model is now complete. The next target is to complete the aerodynamic model. However, the equations we have...

21 Jul

Weekly Update - As part of the FORAY team, I worked on building a mathematical model of the blimp on Simulink. I familiarized myself with dynamic equations of the motion of the blimp. Modeling - Tutorial I used to learn the fundamentals of Simulink – http://ctms.engin.umich.edu/CTMS/index.php?e...

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