Tasks WiSe2021

Semesterplan and Tasks

• Regular Online Session on Thursday 18:00-19:00
• Tutors available in discord:
  • 10.12.2020 (Thursday) from 17:00-21:00
  • 16.12.2020 (Wednesday) from 17:00-21:00
  • on request - please let us know when you want to work on it

Session 1: Introduction (Monday 07th Dec)

• Introduction to the course, presentation of the hardware.
• Organisation - make teams of 2 people

Videos and Tutorials to watch

• Watch the Introduction: https://youtu.be/Irxo9b5cexs
• Go through Tutorial Basics, Tutorial Digital IO, Tutorial Analog IN
• look at the following page: https://micropython-on-wemos-d1-mini.readthedocs.io/en/latest/basics.html

Tasks and Submission (Deadline 16th of Dec)

• Unpacking of the hardware
• Install the software on your computer, put the software image onto the ESP8266 D1 mini, see Tutorial Basics
• Task 1: Digital IO
  • Connect 3 external LEDs and let it blink in different speeds
  • Connect a button to a digital input, when the button is pressed all LEDs should be on
• Task 2: Analog In, PWM Out
  • Connect 1 external LED
  • Connect a potentiometer to A0 and read the analog value
  • change the brightness of the LED with the analog value (PWM)
  • write the analog value to the serial line
• Submission:
  • Deadline: 16th of December 2020 latest 23:59 (Wednesday)
  • For each task submit a video of max 30 seconds (should show the setup, your code on the screen, an the system functioning)

Session 2: Sensors and Actuators (Thursday 17th Dec)

• Discussion of sensors, actuators, libraries
• Organisation - check that teams of 2 people exist

Videos and Tutorials to watch

• Understand how to connect a servo and how to move it, see Tutorial Digital IO
• learn at how to create sounds, see Piezo Speaker
• look at how control a stepper motor Stepper Motor and ULN2003
• get familiar with how to connect the Ultrasonic Sensor HC-SR04

Tasks and Submission (Deadline 13th of Jan)

• Task 1: Play a sound, PWM
  • Connect the piezo speaker to an output pin
  • Modify the example given in Piezo Speaker to play a part of a Xmas song

• Task 2: Read the distance with HC-SR04
  • Connect the Ultrasonic Sensor HC-SR04
  • Understand how to include a library in mycropython (see Tutorial Network, Tutorial Display)
  • use the hcsr04.py library and read out the distance
  • write the distance to the serial line

• Task 3: Implement Theremin-like instrument
  • Connect the piezo speaker to an output pin (task 1)
  • Connect the Ultrasonic Sensor HC-SR04 (task 2)
  • Change the tone (frequency) that is played based on the distance
  • write the frequency you play to the serial line

• Task 4: Stepper Motor
  • Connect the stepper motor Stepper Motor and ULN2003
  • Connect a button (see session 1)
  • For a short press on the button move 45° and for a long press move 180°
  • there may be a problem with power - see Stepper Motor and ULN2003 - if this is the case just build up the setup and the program and document this

• Task 5:
  • Connect the servo motor, see Tutorial Digital IO and SG90 Servo
  • Connect a potentiometer to A0 and read the analog value
  • Set the position (angle) of the servo based on the analog value
  • there may be a problem with power - see SG90 Servo - if this is the case just build up the setup and the program and document this

• Submission:
  • Deadline: 13th of January 2021 latest 23:59 (Wednesday)
  • For each task submit a video of max 30 seconds (should show the setup, your code on the screen, an the system functioning)

Session 3: Networked IoT Systems (Thursday 14th Jan)

• Network library, Display, ES32, MPU6050

Videos and Tutorials to watch

• Understand the network library Tutorial Network
• Understand the display library Tutorial Display (requires coming to the lab for soldering/picking up ESP32)
• Understand the MPU 6050 Sensor and I2C connection (requires coming to the lab for soldering)

Tasks and Submission (Deadline 20th of Jan)

• Task 1: Play a sound over the network, connected devices
  • Connect a potentiometer to A0 and read the analog value
  • Write the value to the network Tutorial Network
  • Read the value from the network from your team colleague
  • Play a sound based on the value you get from the network

• NOT POSSIBLE as we have no access to the lan: Task 2: Subtle communication, connected devices
  • (requires coming to the lab for soldering)
  • Solder the Pins onto the MPU 6050
  • Connect the MPU 6050 Sensor as I2C device
  • When the sensor is moved, write a value to the network Tutorial Network
  • When the device has not been moved for 10 seconds, write a different value to the network
  • Read the movement value from the network from your team colleague
  • Switch on the LED if the remote device has been moved

• Alternativ Task 2: Subtle communication, connected devices
  • Connect a Sensor (LDR, Ultrasonic Sensor HC-SR04, PIR Sensor, ...)
  • If the sensor value changes, write a value to the network Tutorial Network (not more than every 5 seconds)
  • Read the sensor value from the network from your team colleague
  • Switch on the LED if the remote site is active (changing sensor values)

• Task 3: Quotes on the Display
  • (requires coming to the lab for soldering/picking up ESP32)
  • put the micropython image onto the ESP32, see Tutorial Basics and session 1
  • Show every minute a random quote on the display (at least 3 different quotes) Tutorial Display

• Submission:
  • Deadline: 20th of January 2021 latest 23:59 (Wednesday)
  • For each task submit a video of max 30 seconds (should show the setup, your code on the screen, an the system functioning)