Data loggers
Universal SD data logger with display and without.
Temperature, light , voltage, counters ,digital I/O to the
USB or SD card when powered of a battery only <4ma
SD card on bottom of the board supplied 1Gb
Great for science projects.
Also can be used with digital temperature sensor +-0.5oc error and 0.0625oC steps
so each channel can have its own screen with programmed display name and
the channels are cycled round.
Features
· PIC18F4580 micro ,less than 4ma when logging.
· Small battery backup for real-time clock approx 4 mins.
· Can be re-programmed via USB for future free upgrades
· +5V output pulsed for external sensors, also to save battery life
· +7V-16V input typical current 5ma
· 7 A/D inputs
· 5V or 2.560 precision reference for the A/D ref
· Temperature sensor on board see table below for spec.
· Light sensor LDR on board
· 7 Digital I/O inputs or outputs
· 5 Real time counter inputs
· PWM output can use a A/D channel to control the duty cycle.
· Real time clock with timestamp
· SD card logging ,115 days with 1Gb sample every second.
· Easy to use ASCII format for HyperTerminal or use PC software
· User selectable sample time 1s,10s,30s,1m,10m,30m,1h
· Easy plug & play operation
· Interface to reed switches, temperature sensors
· Programmable display for different use's.
Display options
The Logger can be programmed via the PC for which display to show when logging.
Some screens below see manual for more.
Show text with temperature Internal temp & Light RAW A/D data
Wind speed & direction Display a temperature from all channels.
Some experiment ideas.
Windows PC software latest version 3/2/2009
