Business: Raspberry Pi mini computer becomes a tech playground | computer, raspberry, software, chip, programming, people, around, see, broadcom, upton (OC geeks, did you know that a @Broadcom engineer started @Raspberry_Pi foundation?
As you probably know, all chip datasheets have these little capacitors connected near the main chips, “for decoupling”. You’ll often see schematics with several of them... What is decoupling? And decoupling what exactly?
With HouseMon running on the Raspberry Pi, we can start to think how to show incoming data on a web page. The following approach is the most basic one possible: get the received packets into Node.js, i.e. the RPi server, “publish” each through a WebSocket connection to any attached client, and figure out how to get the received value onto the web page.
The measurement “readings” exist in the following three (3!) forms in HouseMon:
raw – serial streams and byte packets, as received via interfaces and wireless networksdecoded – actual values (e.g “temperature”), as integers with a fixed decimal pointformatted – final values as shown on-screen, formatted and with units, i.e. “17.8 °C”
For storage, I’ll be using three (3!) distinct mechanisms: log files, Redis, and archive files.
Aurich Lawson When you buy a Raspberry Pi, the $35 computer doesn't come with an operating system. Loading your operating system of choice onto an SD card and then booting the Pi turns out to be pretty easy.
A Personal Weather Station (PWS) is basically equipment setup by an individual to measure the outdoor temperature, humidity, wind speed/direction, barometric pressure, etc. Weather Underground allows for individuals to log the data from their stations on their servers so it’s available to the world and fully integrated into the “weather map.” Lots of companies make off the shelf hardware and software for this, but since the protocols for this aren’t difficult, I thought it would be fun to make an inexpensive station using the Raspberry Pi!
Turn a Raspberry Pi Into a Low Power NAS Lifehacker Turn a Raspberry Pi Into a Low Power NAS A network storage device is one of the best ways to keep your data backed up, but it can be a little pricey to set up and leaving a computer on all the...
Co.Design Cloud Shield, Twine's Gateway To The Full-Blown Internet Of Things Co.Design Now, if you've ever wanted your Arduino to connect easily to your Twine--because you're some kind of mad maker genius--the guys behind Twine have got you covered.
I remember in high school in France, our class only had 2 oscilloscopes and few other electronics equipment, needless to say I did not actually get to use an oscilloscope until I went to university. It would have been nice to be able to play around with oscilloscopes, frequency generators, etc… earlier, but due to budget constraints, this was not possible. Dr Ajith Kumar, a scientist working with the Inter University Accelerator Centre of India, has spent several years working on an ultra low cost electronics lab composed of an oscilloscope and a signal generator to provide students attending schools that cannot afford regular equipments. This learning & experimentation tool is called expEYES...