most recent 30 from http://chiphacker.com 2010-09-09T14:44:44Z http://chiphacker.com/feeds/user/536 http://www.creativecommons.org/licenses/by-nc/2.5/rdf http://chiphacker.com/questions/1554/msp430-programmer/3660#3660 pfyon 2010-07-21T20:07:55Z 2010-07-21T20:07:55Z

<p>Tried a launchpad? ( <a href="http://processors.wiki.ti.com/index.php/MSP430_LaunchPad_%28MSP-EXP430G2%29" rel="nofollow">http://processors.wiki.ti.com/index.php/MSP430_LaunchPad_%28MSP-EXP430G2%29</a>) It's an MSP430 development board for $4.30 US (with free shipping). Only problem is finding one as they were pretty hot when they were announced about a month ago.</p>

http://chiphacker.com/questions/3462/what-is-the-most-popular-embedded-serial-bus pfyon 2010-07-14T11:57:24Z 2010-07-14T19:28:08Z

<p>I'm designing an embedded device that I would like to make interoperable with third party peripherals through a serial bus. Should I choose SPI, I²C, or some other bus? </p> <p>The peripherals will be pretty low bandwidth (some sensors that communicate over the bus, polled periodically) and most likely within a metre or less of the controller. The controller's sole task is to collect the sensor data, package it in some way, and then send it off to a wireless module via another bus (although the sensor bus could potentially be reused for this too).</p>

http://chiphacker.com/questions/2318/shielding-techniques-for-digital-sensor/2335#2335 pfyon 2010-04-22T16:01:29Z 2010-04-22T16:01:29Z

<p>You could probably try filtering out the 60Hz noise using a simple RC filter.</p>

http://chiphacker.com/questions/2245/zigbee-starter-kit-any-suggestions/2252#2252 pfyon 2010-04-16T02:44:02Z 2010-04-16T02:44:02Z

<p>After spending the last 8 months working on my engineering project involving XBees for my degree, I would recommend a <a href="http://www.ladyada.net/make/xbee/index.html" rel="nofollow">breakout board from ladyada</a> with an FTDI usb to serial cable for programming and an XBee. The board exposes DTR, RST, CTS, RTS, TX and RX for the XBee and regulates the supply voltage down to 3.3V. For automation purposes, there's no reason to go pro unless you live in a mansion imo.</p> <p>The breakout board uses a level converter to switch between RS232 levels and TTL levels required by the XBee, but if your controller outputs serial on TTL levels, I believe you can omit the MAX232 chip or something to keep it at TTL.</p>

http://chiphacker.com/questions/4180/reversing-engineering-usb-signals/4181#4181 pfyon 2010-08-27T16:35:21Z 2010-08-27T16:35:21Z

I'm interested in doing some reverse engineering of the MSP430 launchpad dev board's usb communication under linux. Do you know where I could find some more information on the devices under /dev that I can directly communicate with?

http://chiphacker.com/questions/3462/what-is-the-most-popular-embedded-serial-bus pfyon 2010-07-19T13:10:17Z 2010-07-19T13:10:17Z

Correct me if I'm wrong, but I didn't think UART was a bus. I thought it was just serial communication between two devices.

http://chiphacker.com/questions/3518/code-composer-studio-v4-and-msp430-development/3520#3520 pfyon 2010-07-15T19:54:16Z 2010-07-15T19:54:16Z

However, the code size limit is greater than the maximum amount of storage on those chips you get from the kit so you're only going to run into problems if/when you get some higher end MSP430s

http://chiphacker.com/questions/3462/what-is-the-most-popular-embedded-serial-bus/3466#3466 pfyon 2010-07-14T13:38:46Z 2010-07-14T13:38:46Z

I think you're right about it being easier to bitbang SPI than I2C. I'm hoping it won't come down to bit banging though.

http://chiphacker.com/questions/3462/what-is-the-most-popular-embedded-serial-bus pfyon 2010-07-14T13:37:40Z 2010-07-14T13:37:40Z

I added more details to the question

http://chiphacker.com/questions/3088/aes-128-chip-solutions/3091#3091 pfyon 2010-06-22T00:26:58Z 2010-06-22T00:26:58Z

<a href="http://www.embedded.com/design/224900352" rel="nofollow">embedded.com/design/224900352</a> is an article on power attacks against FPGAs. Not specific for the listed AVR though, still a good read if you don't know how power attacks work.

http://chiphacker.com/questions/2908/measuring-voltage-of-unknown-type pfyon 2010-06-09T03:36:07Z 2010-06-09T03:36:07Z

Are you referring to voltage here? The wikipedia article's circuit assumes AC voltage, as this rectifier circuit 'converts' ac to dc voltage.

http://chiphacker.com/questions/1885/wireless-temperature-sensor/1900#1900 pfyon 2010-03-16T21:57:15Z 2010-03-16T21:57:15Z

Non-pro XBees are rated at ~1mW at their lowest power setting, which will give you near 100% packet transmission within ~10 feet (line of sight) in my experience, an XBee Pro has a max power consumption of ~300mA during transmission but is rated for 1+ mile line of sight. The non pros can do something like 100ft with their max power consumption (about 1/10 of the pro I believe).