Friday, 24 May 2013 21:09

Arduino PCB DIY

Arduino PCB
If your projects require many Arduino and you do not want to purchase the expensive full set of Arduino, here is the good place to go.
All the PCB design is single sided I sugggested to use toner transfer to make the PCB. You should Google "toner transfer" if you want to know more about it.
I should mention all the collection of PCB is not my own design, all credit goes to each respective authors.
Wednesday, 22 May 2013 22:03

Digispark DIY: The smallest USB Arduino

Digispark is an ATtiny85 based microcontroller development board come with USB interface. Digispark is very small and inexpensive but less powerful than Arduino. Coding is similar to Arduino, and it use the familiar Arduino IDE for development.
Digispark is copyrighted by Digistump LLC ( and the full license is here
Here is an article on how to making a Digispark, however if you want to purchase a finished product, you can always get it from  Digispark's author homepage.

Tuesday, 16 April 2013 21:05

Arduino and Stronglink SL018 RFID module

Stronglink SL018 RFID module
Among the RFID modules, Stronglink SL018 is the lowest cost RFID module that I can get which supports read and write. SL018 is a 13.56MHz RFID module, it supports Mifare 1K, Mifare 4K and Mifare Ultralight. The specification are as follow:
MIFARE Module SL018
Tag supported
Ultralight, NTAG203, MIFARE Mini, MIFARE ™ Classic 1K, 4K MIFARE Classic ™, FM11RF08
Supply voltage
4.4 - 7.0VDC
65 × 45 mm

To communicate with Arduino, Marc Boon had developed the SL018 library for Arduino which support reading UID of tags and reading/writing tags.
Monday, 11 February 2013 10:39

Resizing SD card partitions for Raspberry Pi

If you download the Raspbian image from Raspberry Pi official homepage and write it to the SD card, the SD card partition is fixed to 2GB, meaning that only 2GB is accessible no matter how big your SD card are. You must manually re-size the SD card partition in order to increase the available storage capacity.

Sunday, 10 February 2013 19:03

Develop Android Application without Coding

App Inventor is an application use to develop Android application without programming. Its graphical interface is very similar to Scratch   that allow users to drag and drop visual objects to develop application which runs on many mobile devices.

Google released App Inventor on  December 15, 2010 and terminated as the Google product on August 2011. App Inventor is maintained by Massachusetts Institute of Technology and the code is become "Open Source".
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