PIC LCD backpack for HD44780 scree

Liquid Crystal Displays or LCDs as we commonly call then are now very prominent in project making – it dominated the field of numerical indicators surpassing the vintage Nixies and the ever famous seven segment displays – this module from dangerousprototypes will never reach production, since the HD44780 is already rarely used. It’s a very convenient way of practicing LCD communications and it’s also a very nifty gadget to have around – if your planning to have an optional display that can be accessed through USB then this baby is up for the task.

The circuit is composed of a PIC18F2550 which takes care of the serial communications – it communicates through the USB line in the PIC18F2550. You might say that this LCD back pack is just similar to the serial LCDs available in the market – yeah they are similar but this guy is packed with a little more making it beyond your ordinary serial LCD. It has a 500mA fuse – what for? For protection of course it also comes with on board potentiometers to control the contrast of the display. And the thing that makes this more fun to use – Its firmware is USB upgradable! You can add more on it as the PIC18F2550 can handle.

Der Kapellmeister – Direct Musical Performance through Only Visible Gestures

Have you ever thought that is it possible to direct musical performance by only moving your hands in the air without even get in touch with the musical instrument? Well, it might be sounded crazy, but believe it or not, you can really do it with Der Kapellmeister!

For your information, the project is implemented with a glove. Then, it resembles with a conducting baton that has the ability to analyze visible gestures and interprets them into musical elements.

Der Kapellmeister

Der Kapellmeister is a very simple device that can be used to test a user’s ability in basic conducting, by using a real conducting baton. Let’s take an example. When a user performs a gesture, the device is automatically display the tempo, time signature and beat number on the LCD screen. It will then output a tick sound through the speaker.

The system can analyze up to four different time signatures at one time! Honestly, Der Kapellmeister is a very suitable device, especially for the beginners of conducting.

Der Kapellmeister is a compact mobile set that consist of a baton and a glove. Furthermore, an accelerometer is attached to the user’s middle finger, while the microcontroller, LCD and speaker are stitched to the wrist area of the glove.

The Genuine Arduino Control Panel for Motorcycles

There are many electronic projects have been built based on the Arduino. You might have seen the Arduino Control Panel for Racecars or SUV, but have you ever heard about an Arduino Control Panel for Motorcycles? Yeah, it sounds like pretty amazing, isn’t it?

Well, today’s your lucky day, where we’re going to build an Arduino Control Panel for motorcycles. Before that, you should know that the main purpose of developing this arduino control panel is to measure various locomotion parameters, such as the speedometer, tachometer and gear indicator.

Motorcycle Control Panel

Although it’s still in the prototype stage, but it works perfectly without any hassle.

For this project, you have to prepare these following components:

  1. A standard Arduino,

  2. A small LCD, and

  3. Bluetooth .

Basically, the device is connected to the electrical system of the motorcycle to receive pulses from the tachometer and using a reed switch for wheel rotation. It starts to calculate the wheel speed in Revolutions per minute (RPM), divides it into most recent engine RPM and obtains a unique ratio for each gear!

It’s very a fun and interesting project, especially for all the motorcyclists out there! Build one, stick it on your motorcycle, and do the experiment by yourself.

The Simplest Ways to Turn Old Hard Drive into Super Cool Hard Drive Clock!

Have a bunch of old unused hard drives and you don’t know what to do about it? Instead of throwing it into the trash bin, you can simply modify it into a cool hard drive clock!

Technically, it won’t cost you a dime to do the modification, as you’re going to use the recycled items to build this hard drive clock. By the way, those essential components that you’re needed are:

  • Solid metal case,
  • LED at front panel,
  • Power connector and switch at the back,
  • Power supply +5V and +12V, and
  • A 12V fan.

Well, this project is based on PIC18F2320, which is running at 40MHz. The microcontroller can be used to read current time and date from RTC. It will automatically refresh data every hour.


Two timers of microcontroller synchronize work of whole device. There are two different timers, which as Timer0 and Timer1. Timer0 is responsible to measure time of full disk revolution and calculate moment for LEDs to turn On/Off. Timer1 is configured as real time clock and is used to scan keyboard, and refresh LCD.

By the way, the keyboard contains two illuminated buttons, where is used to set correct time/data or select clock mode!