Sparkfun uLog - The Lil' Logger

50841

This Product Has Been Discontinued, This Page Is For Reference Only.

19.95 USD
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$19.95 ea.

This small and tidy 3-channel data logger is designed for brute-force, quick (50Hz) data collection.


Description [Hide]

Once there was a man with a model rocket who wanted to record stuff as it shot through the sky. He needed a small, lightweight, simple-to-use data logger to plug his accelerometer, temperature, and altitude sensor into. He wished so hard that he awoke the next morning with the Sparkfun uLog module nestled into his fist. (Kids, electronic design really doesn't happen this way).

The uLog is a small analog data logger based around an AVR ATtiny24 microcontroller that blarfs what it measures into a 16Mbit memory, which fills up in about 2 hours. Running from a 3.7V lipoly cell, it draws only 4mA, even when linked to a ADXL321 accelerometer.

A small microcontroller can only support so much code, so its interface is tidy, but functional:

  • Connect the uLog to an TTLyFTDI (or similar usb/serial breakout board), linking the Tx/Rx/Gnd lines
  • Open a serial communications program and link to the serial port
  • Turn on the uLog (it detects the presence of a serial link)
  • Hit the enter key until you get a "?" prompt
  • Type "r" to read the data, which dumps the collected data to the terminal window
  • Type "e" to erase the memory for next time.


Features:

  • AT45DB161D provides 16 Mbits of flash
  • 50Hz sample recording speed
  • Up to 3-channel ADC logging
  • Access to ATtiny24 SPI pins
  • Simple-to-use UART (38400 baud) interface for reading and erasing flash
  • 2-pin JST power connector ideal for small LiPoly battery connection

Dimensions:

  • Size: 0.9x0.7"
  • Weight: 8.07g

Documentation [Hide]

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