I am newly studying the interaction between arduino and xively.com. The interaction was first designed for arduino ethernet but now I need the sketch run with WiFi. I use the WiFi shield and Arduino MEGA 2560. Although the internet seems work, my arduino just cannot get the xively data from internet. Even the example sketch of "wifi web client" doesn't work properly.
Finally I tried to update the firmware on my wifi shield. The introduction from the official arduino page is correct but lacks clear step-by-step explaination. Some other online solutions don't work on my shield. This article is written after my finally finshing the update and solving some problems. The final process I found out is actually relative simple and requires only a few downloads (I use windows):
Dec 27, 2013
Dec 17, 2013
Arduino ATtiny 84/85 (updated 2020/8/4)
ATtiny allows you to reduce the cost of your electronic prototype, even lower than Arduino Mini series. ATtiny84 or 85 is microcontroller from Atmel. ATtiny85 offers 6 I/O pins for communication and 8192 byte memory, and ATtiny 84 12 I/O pins and 8192 byte. You can use Arduino IDE to make a sketch and upload onto this tiny IC. To do that, you need to set up your Arduino as an ISP (In-System Programming).
I think, the original developers using ATtiny for Arduino projects are from High-Low Tech Lab of MIT (2009-2014). Visit their page for more information: http://highlowtech.org/
This post shows you how to use ATtiny84/85 for your project and other recent updates.
ATtiny85
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