CE432-1 Robotics II 2021 Fall
Tutorial 1
Name: Mychael Garcia
Email: mhgarcia@fortlewis.edu

Materials:
Tutorial 1

For this  project we learned and  devolped some ways to use the ESP32-CAM board most of this code was pulled form the Rondom Nerd Tutorials textbook but some thing were changed for our own configurations. The first task was to turn on the camera and conect it Wifi and be able to acess it from a remote device.  For task two we learned how to control the flashlight and use external GPIO pins. the first part was done using softwear to automaticly turn off an on the light. Second, the light was controled with a button. Lastly, the brightness was controled using a PWMfunction.

Task 1:

For this task we powered on and conected our ESP32 to the local Fort Lewis "Guest" wifi. This was done by desoldering a small resistor on the board to ignore the onboard antenna and have it connected to an external one. This created a better signal which was actualy capeable of streaming live video.
Wifi conection and relavent streaming adress

After establishing a wifi conection and making sure the camera was opperating correctly we started on some image recognition. Using the camera and its built in facial recognition softwear we made sure it could finda face in the fram and draw a box around it.This did involve some small code changes as the given code did not work correctly.
Face with box drawn arround it

After knowing it can recognice faces we tested the memory and face comparison feature. This was done by seeing if it could tell the difference between a known and unknow face. After enrolling a face the camera would save a few frames to do a comparison on. After restarting the steam and having a face in the shot the camera could tell if the face was similar to the one it previously recorded. If it was we would get the message "Hello Subject" if it wasnt recognized the message would read "Intruder Alert!".
Approved faceDenied face

Task 2:

For this task we learned how to use the LED and control the pins (GPIO) on the ESP32 board. This started off by flashing the build in LED. Using the board schematic the LED is conected to pin GPIO4. Uploading a simple coad refering to pin 4 as an LED and putting a delay between actions we could get the flash to blink off and on.
Flashingflash code

After getting the flash control working we changed the control over from being sofwear based to a physical button. Afetr adding button and conecting it to pin GPIO2 we could manualy control when to turn the LED on and off be having the board know if the incoming voltage was higher or lower than the previous state.
Buttonbutton code

Lastly we controled the overall brighness of the LED. This was accomplished by using a PWM function which would sen small pulses of power to the LED in rapid succession with different frequencies that would control the brightness. The farther appart the pulses the dimmer the light.
PWM brightnessbrightness code

Conclusion:

For being the first tutorial, it was a good introduction to how the ESP32-CAM board is going to work and what quirks it has. Its also very interesting on how the board comunicates using the Arduino IDE programming softwear. Knwoing ths board exists this gives me future ideas in how this could be used in my senior seminar project.
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