starter kit question... looking for suggestions for 9v toy/gadget to cannabilize

orioles50 · February 28, 2021, 7:48pm

hello - new to arduino and looking forward to the tinkering/learning. in the starter kit i purchased, it lists 'things you need to supply' which includes a 9v device that includes a switch/pushbutton that i'll be hacking. i'm having trouble thinking of anything... the only thing i have lying around are those little flashlight caps that you snap on to a 9v battery. they have a switch, but i don't know if that would be good enough? i don't know if i need to prefer something that has a case that can be opened (i.e., screws, or snapped together).

adv-thanks-ance

robin badart
tucson, az

pert · February 28, 2021, 9:27pm

To provide some context to the forum members who don't own the book, the project is "Project 15: Hacking Buttons". Here is the project's sketch:

github.com

arduino/arduino-examples/blob/1.9.0/examples/10.StarterKit_BasicKit/p15_HackingButtons/p15_HackingButtons.ino

/*
  Arduino Starter Kit example
  Project 15 - Hacking Buttons

  This sketch is written to accompany Project 15 in the Arduino Starter Kit

  Parts required:
  - battery powered component
  - 220 ohm resistor
  - 4N35 optocoupler

  created 18 Sep 2012
  by Scott Fitzgerald

  http://www.arduino.cc/starterKit

  This example code is part of the public domain.
*/

const int optoPin = 2; // the pin the optocoupler is connected to

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Forum thread providing links to PDFs of likely outdated, but still serviceable, versions of the Creative Commons licensed Arduino Projects book: Digital/pdf copy of the starter kit projects book - Project Guidance - Arduino Forum

system · June 28, 2021, 9:28pm

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