### Agenda: 12:00: Assignment Review <br> 12:30:  <a href='../../lab/machine/steppers.html' target="_self">Stepper motor workshop</a> <br> 1:15: <a href='https://learn.sparkfun.com/tutorials/how-to-use-an-oscilloscope'>How to use an oscilloscope</a><br> 1:30: Break. Brainstorm ideas for CNC assignment. <br> 1:45: Output device extravaganza! (Choose one) - <a href='../../lab/output/led/rgb.html' target="_self">RGB LEDs</a>: Control each color channel independently. - <a href='../../lab/output/led/strip.html' target="_self">LED Strips</a>: Light the first 4 LEDs of your LED strip with different colors. - <a href='../../lab/output/display/oled.html' target="_self">OLED</a>/ <a href='https://learn.adafruit.com/adafruit-1-14-240x135-color-tft-breakout'>TFT displays</a>: Write a function to change the screen color. - <a href='../../lab/output/buzzer/index.html' target="_self">Piezo Buzzers</a>: Compose a melody (3+ notes) and play it. - <a href='https://circuitdigest.com/microcontroller-projects/esp32-based-audio-player'>Speaker/Amplifier</a>: Requires ESP32 ([Or does it?](https://github.com/charliegerard/dev-notes/blob/master/arduino/wavFilesWithoutSdCard.md)). Play a WAV file. - <a href='https://itp.nyu.edu/physcomp/labs/motors-and-transistors/using-a-transistor-to-control-high-current-loads-with-an-arduino/'>EMF (motors/solenoids/valves)</a>: Open and close a solenoid with a FET. <a href='../../lab/output/emf/Transistor_ESP32S2.txt' target="_self">Code for ESP32S2</a> ### Assignment: <b>Minimum Viable Product:</b> Make a serious attempt at the most challenging/intimidating aspect of your final project. 1. Include at least one input and one output device. 2. Write a microcontroller program that integrates at least one input device and one output device. Avoid the <code>delay()</code> function and use the C++ class structure. 3. Use an oscilloscope to discover the time domain at which your output device is operating. Is it on a fixed clock? What's its speed? Share images and describe your findings. Examples: [PK's capacitive piano](https://laurenbhr.github.io/PHYSCI-70/07_output/index.html), <a href='https://kian2attari.github.io/2020/03/14/week-8.html'>Kian (pan/tilt kit)</a>, <a href='https://kassialove.github.io/PS70-assignments/week8.html'> Kassia (RGB LED / buzzer)</a>, <a href='https://tsevilla16.github.io/TeddySevilla-PS70/week8.html'> Teddy (LED Strip / pot)</a>. ### Labs: Work on the assignment. Use a 'scope. Confirm any materials you may need for your final project. <h3> Reading: </h3> <p> <a href='https://learn.sparkfun.com/tutorials/light-emitting-diodes-leds'>LEDs</a>, <a href='https://learn.sparkfun.com/tutorials/transistors'>Transistors</a>, <a href='https://learn.sparkfun.com/tutorials/how-to-use-an-oscilloscope'>How to use an oscilloscope</a></p>