Datasheet

Disclaimer
The author assumes no responsibility for your use of information contained in this
document. Experiment entirely at your own risk.
The author does not represent Davis Instruments Corp. Likewise, the author
does not have any commercial interests in Davis Instruments Corp. or any other
companies or products mentioned in this document.
All trademarks remain the property of their respective holders, and are used
only to identify the products mentioned. Their use in no way indicates any affilia-
tion between the author and the holders of the said trademarks.
No Davis products were hurt or damaged beyond repair while these experi-
ments were carried out.
Quoted prices are in USD unless otherwise noted.
Caution
Never connect anything to the rear expansion connector of the console while power
is still applied to the unit. To safely connect or disconnect anything, remove the ex-
ternal power plug and at least one of the batteries — and let the internal capacitator
discharge.
Pressing the 2ND button twice to activate the LCD backlight will significantly
reduce the time it takes for the capacitator to discharge. The LCD should be com-
pletely blank before anything is connected to or disconnected from the expansion
connector.
DO NOT CONNECT the console serial line directly to a PC or any other equip-
ment not known to use 3.3V signal levels. In most cases a level converter such as
the SparkFun FTDI basic breakout, 3.3V version (SparkFun product # DEV-09873 @
$14.95) is required.
http://meteo.annoyingdesigns.com ii