Internet Enabled LM35 Data Logger using MBED ARM NXP LCP1768 + Pachube

[Macgyver]

May extra time ako kahapon.  Eto, binuo ko na yung balak kong Internet Enabled LM35 Temperature Data Logger using  the MBED  NXP LC1768 and send the data to Pachube.

http://screencast.com/t/vdCC9sUc



Ako lang ba nagiisang Pinoy na nagsesend ng data sa Pachube?  Hmm... 1st kaya ako o meron na dati na nag discontinue ng sensor data feed nila.


Anyway, Eto setup




May built in ethernet hardware na.  Jacks lang ang kulang.  Then import ng TCP/IP libraries.  Ayos na.

Medyo erratic lang ang output nitong LM35.  Minsan wrong reading kaya nagswi-swing yung data sa temperature log.

[RiDdLeR???]

Medyo erratic lang ang output nitong LM35.  Minsan wrong reading kaya nagswi-swing yung data sa temperature log.

May solution or work around na kaya dito?  I tired on arduino (atmega8l) and even on stm32, erratic nga   biglang tataas yung reading or magdidip from the expected normal reading.  Kakataka lang kung bakit sa DMM, hindi naman lumalabas yung gantong behaviour?

[Macgyver]

workaround na ginawa ko is sa code na lang.  Pag temperature is <20  or  >45  medyo abnormal na yun.  discard the reading.   Then nilagyan ko din na if  new reading increase or decrease by more than 5% compared to the previous reading, discard the reading na din.

[maldihtah13]

Gusto ko rin gawin ito using microchip enc28j60 and ds1820