Have you ever wanted an ultrasonic tape measure, like this Stanley? (See picture). Well, I have but then I am a Lazy Old Geek. I don’t really need one but I thought I’d try to make one. And naturally, I thought of an Arduino.
August 2012 update: I just found out the software used in this Instructable does not work in the latest Arduino environment, 1.0. I think it is the LCDKeypad library but haven't found an updated version or software fix. However, this does work with version 023. LOG
Step 1: Parts List
Arduino $17.60 (Duemilanove 2009) ebay.com
HC-SR04 Ultrasonic $ 4.61 ebay.com
LCD Keypad (Arduino) $ 8.88 ebay.com
Now I realize this is about $30 where the Stanley is available for around $24 but these parts are not committed to one function like the Stanley is.
I wanted an Arduino that was shield compatible. I already have two, a Freeduino and Seeduino so I decided to buy a third. Right now, one of the best deals I liked is for a standard Arduino Duemilanove 2009 on ebay.
By the way, mine came with an Atmega 328-PU instead of the ‘standard’ Atmega328P-PU. I discussed this in another Instructable:
The LCD keypad also has Arduino support plus five user pushbuttons and a 16x2 (16 characters x two rows) display.