12 Jul

Three Node Mesh Network Demonstration Using painlessMesh

Bhavik Joshi

This week, I used the painlessMesh library to create a very simple mesh network of three nodes. I wrote the code to resemble how I believe our blimps/ RoCo robots should use the network once they are automated: they send instructions to one another that is interpreted in a switch statement, these in...

05 Nov

FORAY - multiple peripheral devices connected to the same laptop

Parth Agrawal

In case, we have a limited number of laptops to connect the game controllers and master devices. This experiment shows that multiple game controllers can be connected to the same laptop for communication. The current communication system is limited by the number of ports. We can overcome this limita...

21 Oct

FORAY - Integrated System ( Joystick Controller + 2.4 GHz Communication + Motors)

Parth Agrawal

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

FORAY - Controlling Multiple NodeMCU using Controller

Parth Agrawal

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

Using Peripheral Device to Control Motors using ESP NOW

Parth Agrawal

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...

09 Sep

Experiment Results II - Communication

Parth Agrawal

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

Experiment Results - Communication

Parth Agrawal

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...

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