Difference between revisions of "Tutorial Digital IO"

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== Related Components ==
 
== Related Components ==
−
The components are related to the [[LMUBox]]. For more components, see the [[Hardware List]. Many of the pages on actuators and sensor include additional examples.
+
The components are related to the [[LMUBox]]. For more components, see the [[Hardware List]]. Many of the pages on actuators and sensors include additional examples.
  
 
=== Microcontroller ===
 
=== Microcontroller ===
 +
* [[ESP8266 D1 Mini]]
 
* [[ESP32 Web Kit]] with integrated OLED Display from Heltec  
 
* [[ESP32 Web Kit]] with integrated OLED Display from Heltec  
−
* [[ESP8266 ESP-12F]] NodeMCU Module from AZDelivery  
+
* [[ESP8266 ESP-12F]] NodeMCU Module from AZDelivery
  
 
=== Actuators ===
 
=== Actuators ===
−
* [[LED]]s in different colors to connect externally, many in  the
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* [[LED]]s in different colors to connect externally  
−
* [[RGB LED]] multi-color LED, 2x in  the
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* [[RGB LED]] multi-color LED
−
* [[LED Ring NeoPixel]],
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* [[LED Ring NeoPixel]]
−
* [[Piezo Speaker]], 2x in the
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* [[Piezo Speaker]]
−
* [[Speaker]], 2x in the
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* [[Speaker]]
−
* [[SG90 Servo]] Micro Servo Motor, 3x in the
+
* [[SG90 Servo]] Micro Servo Motor
−
* [[Stepper Motor and ULN2003]] 28BYJ-48 ULN2003 5V Stepper Motor + ULN2003 Driver Board; 2x in the
+
* [[Stepper Motor and ULN2003]] 28BYJ-48 ULN2003 5V Stepper Motor + ULN2003 Driver Board
 
* [[IRF520 Module]] Power MOSFET switching module ('electronic relay')
 
* [[IRF520 Module]] Power MOSFET switching module ('electronic relay')
  
 
=== Sensors (and physical controllers) ===
 
=== Sensors (and physical controllers) ===
−
* [[push button]], several in the
+
* [[push button]]
−
* [[Switch]],
+
* [[Switch]]  
 
* [[PIR Sensor]] passive infrared motion sensor
 
* [[PIR Sensor]] passive infrared motion sensor
  
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The videos are a first test... the ones marked with ** will be replaced over the next months with new versions.
 
The videos are a first test... the ones marked with ** will be replaced over the next months with new versions.
 +
 +
If you use the [[ESP8266_D1_Mini]] have a look at this file about which Pins to use: https://micropython-on-wemos-d1-mini.readthedocs.io/en/latest/basics.html
 +
  
 
== Digital Output: Adding an external LED to the controller ==
 
== Digital Output: Adding an external LED to the controller ==
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<youtube>0KGgYsEZcZM</youtube>
 
<youtube>0KGgYsEZcZM</youtube>
  
 +
 +
Here is a short video of how to connect and control an LED on the [[ESP8266_D1_Mini]].
 +
 +
<youtube>GHE5A0WT5AE</youtube>
 +
 +
 +
If you use the [[ESP8266_D1_Mini]] have a look at this file about which Pins to use: https://micropython-on-wemos-d1-mini.readthedocs.io/en/latest/basics.html
  
 
== Digital Output: Connectin an external LED (old version using WebREPL **) ==
 
== Digital Output: Connectin an external LED (old version using WebREPL **) ==
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== PWM Output: connecting a servo (old version using WebREPL **) ==
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== PWM Output: connecting a servo and and LED ==
−
In this video on youtube (14:40) we explain the concept of pulse width modulation (PWM) and how to program it in MicrpPython. We show how to use PWM to controll a servo: https://youtu.be/_4bXk8JjQSk
+
In this video on youtube (45:39) we explain the concept of pulse width modulation (PWM) and how to program it in MicrpPython. We show how to use PWM to control a servo and the brightness of an LED: https://youtu.be/XovIHYo7s1A
 +
 
 +
<youtube>XovIHYo7s1A</youtube>
 +
 
 +
 
 +
== PWM Output: connecting a servo (old version using WebREPL **, 14:40) ==
  
 
<youtube>_4bXk8JjQSk</youtube>
 
<youtube>_4bXk8JjQSk</youtube>
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<youtube>va1beT6sxLs</youtube>
 
<youtube>va1beT6sxLs</youtube>
 +
 +
 +
Here is a short video of how to connect a button and how to read a digital value from the ESP8266_D1_Mini with [[MicroPython]].
 +
 +
<youtube>Cb_nYYs-pag</youtube>
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 +
[[Category:Tutorials]]

Latest revision as of 15:11, 12 June 2024

Digital Input and Output with MicroPyton and ESP32/ESP8266[edit]

In this part of the tutorial, we explain how to control digital outputs and how to read digital inputs using MicroPyton on ESP32/ESP8266. This includes switching the state of the GPIOs (general purpose input output) and also how to create a pulse width modulation output for changing the brightness of an LED or for controlling a servo.

Success criteria[edit]

  • you can set a GPIO pin to on or off from the python prompt
  • you can write a loop to blink an external LED
  • you can use pulse width modulation to control the intensity of an LED
  • you can use pulse width modulation to control a servo that can be directly driven from the ESP Module
  • you can read in the status of a GPIO
  • you can connect a switch or a push-button and read its status into a variable

Related Components[edit]

The components are related to the LMUBox. For more components, see the Hardware List. Many of the pages on actuators and sensors include additional examples.

Microcontroller[edit]

Actuators[edit]

Sensors (and physical controllers)[edit]

Instructional Videos[edit]

The videos are a first test... the ones marked with ** will be replaced over the next months with new versions.

If you use the ESP8266_D1_Mini have a look at this file about which Pins to use: https://micropython-on-wemos-d1-mini.readthedocs.io/en/latest/basics.html


Digital Output: Adding an external LED to the controller[edit]

In this video on youtube (30:30) we show how to connect an LED and how to control it from MicroPython: https://youtu.be/0KGgYsEZcZM


Here is a short video of how to connect and control an LED on the ESP8266_D1_Mini.


If you use the ESP8266_D1_Mini have a look at this file about which Pins to use: https://micropython-on-wemos-d1-mini.readthedocs.io/en/latest/basics.html

Digital Output: Connectin an external LED (old version using WebREPL **)[edit]

In this video on youtube (16:54) we show how to connect an LED and how to control it from MicroPython: https://youtu.be/G6HZ1etMRbM


PWM Output: connecting a servo and and LED[edit]

In this video on youtube (45:39) we explain the concept of pulse width modulation (PWM) and how to program it in MicrpPython. We show how to use PWM to control a servo and the brightness of an LED: https://youtu.be/XovIHYo7s1A


PWM Output: connecting a servo (old version using WebREPL **, 14:40)[edit]

PWM Output: creating sounds[edit]

In this video on youtube (23:56) we explain how to create a sound on a digital output pin. We have two versions, one with the sleep function and one with pulse width modulation (PWM) in MicrpPython. We also show how to add an PAM8403_Stereo_Amplifier: https://youtu.be/HPQMvL1SP_c


Digital Input - connecting a switch and a push-button **[edit]

In this video on youtube (30:31) we explain how to read in digital inputs in MicrpPython. We show how to connect a switch and a push-button and also explain the basic concept of a pull-up resistor: https://youtu.be/va1beT6sxLs


Here is a short video of how to connect a button and how to read a digital value from the ESP8266_D1_Mini with MicroPython.

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