Difference between revisions of "CHAM 2018-02-26"

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=== Stepper Motors! Control the position of a motor that's used in 3D printers! ===
=== Stepper Motors! Control the position of a motor that's used in 3D printers! ===
THIS DOCUMENT: https://www.noisebridge.net/CHAM_2018-01-22
THIS DOCUMENT: https://www.noisebridge.net/CHAM_2018-01-22

Revision as of 04:34, 27 February 2018

Circuit Hacking Arduino Mondays - February 26, 2018

THIS DOCUMENT: https://www.noisebridge.net/CHAM_2018-02-26

Getting Started

If you have never worked with an Arduino before, you'll first need to install the Arduino IDE (Integrated Development Environment).

Download and install the Arduino IDE

  Windows:  https://www.arduino.cc/en/Guide/Windows
  Mac OS X: https://www.arduino.cc/en/Guide/MacOSX
  Linux:    https://www.arduino.cc/en/Guide/Linux
  Web IDE:  https://create.arduino.cc/editor
  You may need to install a separate USB driver to connect with the Arduino board. Speak with one of us.

Arduino Pinout

(CLICK TO ENLARGE) Uno board pinout.png

Test that your setup works - Blink the Arduino's onboard LED

Select "Blink from the Arduino IDE's "File > Examples > 01. Basics" menu, or load the code from the following page:


Fun with LEDs

Let's add one LED to your Arduino breadboard now, and make it blink

You can either modify the "Blink" example above to use a different pin, or you can follow another example sketch-


Blink without the "delay()" function

A slightly more sophisticated technique- load File > Examples > 02. Digital > BlinkWithoutDelay

PWM: Pulse-width modulation

Use a digital "~" pin to output a signal which dims and brightens using pulse-width modulation (powering the pin for short bursts)

   Load File > Examples > 03. Analog > Fading

Multiple LEDs at once

Now let's add multiple LEDs to your breadboard, and make them blink-


Controlling LEDs with Outside Events

Adding inputs to control the LEDs: switches


Use a Photoresistor to control an LED!

See Kevin for a photoresistor. Follow these directions to set up the photoresistor, then use the input to control the PWM from above.



Communicating between two Arduinos with Packet Radios

Packet Radios! The nRF24L01 is a digital radio chip that Arduinos can use to send and receive data.

Requires two people with an Arduino apiece. Ask Kevin, J, Asim or Joe for a radio module.

Find a partner and follow this document: http://howtomechatronics.com/tutorials/arduino/arduino-wireless-communication-nrf24l01-tutorial/



Packet Radios^2! Communicate with more than one other radio

Send an ACK (acknowledgement) message after receiving a message. Let's sender know a receiver got a message. This constitutes bidirectional communication, which http://tmrh20.github.io/RF24/GettingStarted_CallResponse_8ino-example.html

Stepper Motors! Control the position of a motor that's used in 3D printers!


THIS DOCUMENT: https://www.noisebridge.net/CHAM_2018-01-22