Posts Tagged ‘arduino project requirements’
Hello, I have gotten my hands on couple of communication devices which could be used for android and Arduino/ Netduino communication, first RN-42 SMD bought from robotics.pk – link, Arduino WiFi Shield also bought from robotics.pk – link and third is Netduino it self which comes with Ethernet shield built-in, and Netduino is given to me by my teacher for educational purposes only, sad cant keep it.
Any ways lets start of with, RN-42 SMD is fairly cheap comparatively to others available for sale on spark fun and is very easy to use you just need 4 connections VCC(3.3v),GND,RX and TX and you are done and by default RN-42 runs on 115200 braud rate, I found this to be very cheap and easy to use although for making connections on the smd, could be stressing, you would need small and steady hands, after making connections and connecting it to my Arduino Mega 2560, I used my serial Bluetooth android app and data transfer was done perfectly and fast, and range was acceptable, about 50 to 60 feet. it is perfect fit for short range, battery powered application.
Third device which is Netduino in-built Ethernet Shield, I have not gotten around to configure it yet, but will do it next. I feel the results will be same as Arduino WiFi Shield.
So in end I realized one thing, WiFi Shield is a bit buggy, sometimes requests in buffer of Arduino don’t really execute and if they do its 4-5 sec delay, I guess it takes time to process the request and its fairly new so needs a firmware update, so WiFi shield is not recommended for on second execution for example like WiFi controlled car, for such projects Bluetooth should be preferred, and for projects such as Home Automation and such WiFi is ideal.
This is basic things i have at my dissposal, list you will need to follow my experiments, if you have any suggestion do comment
|ARDUINO MEGA 2560 Rev3|
|Bluetooth Serial Module|
|RESISITANCE (330 ohm )|
|RESISITANCE ( 10k )|
|JUMPER CABLES or WIRES|
|ARDUINO WIFI SHIELD|
|7805 12V TO 5V|
|5V DC ADAPTER|
|100 OHM RESISTANCE|
|BLUETOOTH RN42 SMD|
|9V BATTERY STRAP|
for now I guess that’s it.