HackerSpaceTech

Using a Maxbotix Range Finder, Kevin Dahhar show you how to make a circuit that helps you back your car up into the garage, and put the Arduino into a super low power sleep when the circuit is not needed.

The Arduino only runs off of batteries and because it ...

I popped the MAX7219 and 8x8 LED Matrix from the kit and made it a little more social (watch video to see what I mean).  Using the MAX7219 requires only 3 pins from the arduino, a couple capacitors and resistor.  All the multiplexing is handled by the chip.  When writing ...

My last experiment was with the three 74HC595s I was using to create the Knightrider effect on 24 leds. In this experiment I am going to add another 74HC595 and use all four to control four common-cathode seven-segment LED displays.

To duplicate this setup you will need the following hardware ...

Connected three 74HC595s in series and entertained myself by simulating KITT from Knightrider. Would have hooked up the fourth one but was running out of realestate and LEDs. I should have a another breadboard in a few days along with some 7 segment leds that I will be hooking up ...

Using the 74HC595 to control 8 leds (outputs) without giving up 8 ports on the arduino uno. Three outputs from the arduino are used to shift the data out in serial to the 74HC595 were it is then parceled out to each of its individual pins. You can link multiple ...

This is the first experiment I tried with the board of education arduuino robot shield. The experiment involves using Ken Shirrifs IR Library along with any IR Receiver. In order to use this example you will first need to determine what the IR codes are for the transmitter you wish ...