This document summarizes a project to develop a WiFi-enabled automatic cat toy called the "Mousr" using an ESP32 microcontroller and app. The objectives were to create an Android app for Bluetooth and WiFi communication with Mousr, integrate sensors with the ESP32 microcontroller, recreate the UART connection to engines, and design LED/button circuits. There were issues in the PCB layout, ESP32 crashes when flashing I2C drivers, and inability to get a response from the IR receiver circuit. The UART reset protocol and Bluetooth connection between the app and Mousr also failed.

1. WIFI MOUSR
Isabel Ugedo, Marc Abraldes and Nick Thoele
ECE 445 Project Presentation

2. Introduction

3. ▪ Petronic’s “Mousr” is an automatic/phone controlled cat toy.
▪ It currently connects to the phone via Bluetooth, which has
significant range and data transfer limitations.
▪ The aim of our project is to develop the product on a
different microcontroller, which along with a new App allows
for WiFi connection.
Introduction
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4. ▪ Create App to manage Bluetooth and WiFi communication
with Mousr (Android)
▪ Integrate sensors with ESP32 microcontroller and read
output data
▪ Recreate UART connection with engines
▪ Design LED/Pushbutton circuit to change and display
power state and battery level
Objectives
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5. Block Diagram
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6. Power Circuit
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7. ESP 32
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ESP32 Wrover kit [2]
ESP32 series [2]

8. FreeRTOS
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9. Sensors
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Mousr functionality [1]

10. Sensors – IMU
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I2C Protocol for IMU [3]

11. Sensors – TOF
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I2C Protocol for TOF [3]

12. Sensors – IR circuit
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Presence detection circuit [4]

13. Sensors – IR circuit
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Presence detection circuit [4]

14. PCB Design
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15. PCB Design
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16. App Main Activity
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App Screen

17. Connection Activity
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App Screen

18. ▪ There were several errors in the PCB layout which impeded
sensor connections.
▪ ESP32 crashed when we flashed I2C drivers, and displayed
an “Invalid Architecture” error.
▪ IR circuit proved hard to debug due to the inability to see
the specific wavelengths. We weren’t able to get a response
from IR receiver.
Issues and Future Work
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19. ▪ UART reset protocol was complicated and failed when
attempted.
▪ Bluetooth connection between Mousr and App unbonded.
This inability to connect led to the inability to send data
packets, including the WiFi credentials.
Issues and Future Work
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20. [1] Petronics Oficial Website: https://petronics.io/
[2] ESP32 Oficial Website: http://esp32.net/
[3] Wikipedia I2C page: https://es.wikipedia.org/w
[4] “Vishay’s TSSP-AGC P Sensor Series for Proximity Sensing”:
https://pdfs.semanticscholar.org/b33d/0a973e715ca6b67689cb69ef4e8b62826f
7b.pdf
References
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21. Thank you for you time
Any questions?
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