From the world of Electronics…
I have finally been able to put together a few tutorials on how i used my raspberry pi and how you can do the same, i have referred a lot of tutorials and guides to come up with this, and i hope this would be useful…The Host Your website instructable is quite basic and would help you get started on your raspberry pi, The talking to sensors tutorial is more advanced and required an advanced understanding of linux commands and Python. So go ahead have fun living with your raspberry pi…
just completed my cookie jar prank tutorial for instructables.com, it uses just three components that you can buy from any Radio shack. This cooke jar sounds a loud alarm if any un-authorized friend tries to steal your cookies, You can also use it to play a prank on ur little sister.. 🙂 and it took me 15 min to finish the whole project, happy halloween guys!! and do visit the tutorial here
I hope this is not animated, and if it is not animated, its a really really awsome Halloween project..check out the video…
Many of my students keep asking me, how can I make a plug and play device like a pendrive, well in defiantly not very easy, I will give you two easy ways to do the same, it a easiest is… using a Easyusb module by daniel brodani..documentation is available on sparkfun..it a very simple module but the storage is limited to 2 MB, but its quite ok for a dataloger! .txt files are usually less than a KB. The interfacing is quite simple, it has UART lines TX and RX, connected them to your controller, go through the data sheet you will find commands to make a new file and write data, once the data is written u will see the file when u plug it in.
The second not so easy method to make a SD/MMC card data logger, to write the code on your own you need to have a clear understanding of SPI communication and FAT32 by windows, i was amazed initially to find out memory cards use SPI protocol! for all the newbies out there the is and AVR fat library which you can use! They also give sample code downloads for AVR, PIC and 8051. If you are comfortable working with Arduino, there is also a Arduino FAT libraryhere which is much simpler to use…and for all the lazy geeks there sparkfun had made a nifty micro SD card logger OpenLog using the arduino FAT library and its only 23$..so add USB compatibility to your projects now!..happy datalogging!!
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