jim hamblen

Activity

Comment on: MCP23S17 addressable 16-Bit I/O Expander with SPI - I used the library for a student lab here and posted a basic IO getting …
jim hamblen - 28 Jan 2011
Program: MCP23S17_Basic_IO_Demo
jim hamblen - 28 Jan 2011
Reply to wave player library - Sparkfun makes an audio jack breakout board. Some students here used it with an old …
jim hamblen - 26 Jan 2011
Comment on: Interfacing USB mass storage devices (aka USB flash drives) - I noticed that Cool components has a nice USB A breakout board, http://www.coolcomponents.co.uk/catalog/product_info.php?products_id=556 They seem …
jim hamblen - 26 Jan 2011
Reply to Small RS232 Serial SMD breakout board at Sparkfun - If you need to use handshaking, take a look at this one http://www.pololu.com/catalog/product/126
jim hamblen - 25 Jan 2011
Reply to Can't wakeup MBED from DeepSleep - http://mbed.org/users/simon/notebook/interface-powerdown/ also states that it disconnects the debugger - so it might help the DeepSleep …
jim hamblen - 06 Dec 2010
Reply to Solar Power for Mbed? - Divide by 5 for mA - assuming you are using 5V power on the mbed …
jim hamblen - 03 Dec 2010
Reply to Solar Power for Mbed? - So using the two ideas above here is a code example that cuts power consumption …
jim hamblen - 03 Dec 2010
Reply to mBed only runs 4.5 hours on 3 x AA ? is that right ? - So with the two ideas above, I ran a test and it would just about …
jim hamblen - 03 Dec 2010
Comment on: mbed Power Control/Consumption - I noticed that http://mbed.org/users/simon/notebook/interface-powerdown/ has new firmware to power down the magic USB interface chip. …
jim hamblen - 02 Dec 2010
Reply to mBed only runs 4.5 hours on 3 x AA ? is that right ? - http://mbed.org/users/simon/notebook/interface-powerdown/ has new firmware that turns off the "magic" USB interface chip allowing the mbed …
jim hamblen - 02 Dec 2010
Reply to assembly preprocessing - http://mbed.org/cookbook/Assembly-Language might be helpful
jim hamblen - 02 Dec 2010
Reply to X-10 Home Automation with mbed - FYI: If you need to buy some X10 hardware, they often have some very low …
jim hamblen - 30 Nov 2010
Reply to Solar Power for Mbed? - http://mbed.org/users/simon/notebook/interface-powerdown/ has new firmware that turns off the "magic" USB interface chip allowing the mbed …
jim hamblen - 30 Nov 2010
iRobot Create Robot was updated
jim hamblen - 18 Nov 2010
Reply to about serial - A voltage level conversion circuit or http://en.wikipedia.org/wiki/MAX232 IC is required to connect mbed to a …
jim hamblen - 18 Nov 2010
Reply to Ethernet working (show of hands, please)? - We used the Sparkfun Magjack breakout board here in a class and twenty students all …
jim hamblen - 17 Nov 2010
Reply to printf hangs after several lines - Here is a short example based on longer code I was working on that made …
jim hamblen - 17 Nov 2010
Reply to printf hangs after several lines - Printf is deadly with almost any interrupts as far as I can tell. you can …
jim hamblen - 16 Nov 2010
Program: Serial_interrupts
jim hamblen - 16 Nov 2010