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Products -
MultiLogger
MultiLogger
The MultiLogger allows you to store any information to a SD/uSD card in
computer readable (FAT) format. It can be used alone for logging
temperatures, or use the serial interface to log time-stamped data in any
application. Advanced users can customize the source code to integrate other
sensors/data.
 
$45.00 USD
Uses:
- Logging local temperature changes over time
- Log interval configurable anywhere from
one second to one week)
Logging multiple temperature locations (up to 127 on
a 3 wire cable)
Logging GPS data from nearly any serial GPS module
A serial source stream such as GPS emulation
Features:
- SD card slot for SD or uSD (with adapter) flash card,
push-in/push-out type.
- Battery backed Real Time Clock (DS1392) for adding timestamps to
logs.
- RTC interrupt allows unit to sleep (conserve energy) and then wake
up at a predetermined time/day.
- Temperature sensor (DS18B20) for local temperature measurements
- Polarized header allows for easy addition of up to
127
external sensors on the Dallas 1-wire bus.
Voltage regulation (accepts 3.5 to 16v input) onboard. Stuffing
option regulator allows wider voltage range with improved efficiency and
extra power for external components.
3.3 to 5v tolerant serial communication. Defaults to 9600 baud
(higher rates available).
Arduino-like architecture, using the Atmel ATmega328 running at
3.3v/16MHz.
FTDI
Basic Breakout (5V) style serial header connector for upgrading or customizing
firmware.
LEDs to indicate power and SD card access
Two more user programmable LEDS (used to indicate SD error, and RTC pulse on provided demo app).
Full source code provided; customize to fit your need or use it as
is.
Six spare microcontroller pins broken out for digital I/O or analog
inputs.
Spare I/O, TTL serial, and power brought out to 0.100” spaced headers for prototyping,
probing, or customization.
Five more 0.100” spaced unconnected holes available for prototype
additions such as a GPS module (see below).
Power on/off switch to select external or USB (FTDI) power source.
JST connector to supply power from battery, wall-wart, etc.
Reset button.

Re-programming the MultiLogger with a
5V FTDI
Basic Breakout
M ultiLogger Software:
- Open source (see link below).
- Comes loaded for stand-alone temperature logging or as a serial logger/slave
from any device with 3.3-5v TTL RS-232 output.
- Easily configurable code to set logging frequency, file name,
precision, etc.
- Write/append files with or without time stamp. File access date/time
updates automatically.
- Simple serial interactive menu can be used directly/manually, or as
a slave to your device.
Serial commands currently available:
h/?: Lists available commands
f: set File Name
a: append file with string
r: read file(arg is last X KBytes, def is 0/all)
d: Directory
m: manual temp log add
i: init SD Card
t: read rtc time
u: update rtc time
c: CD/WP bits status
New commands added regularly, also upon
request
Resources:
$45.00 USD
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