LOG08-II One Wire Sample Logger
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Introduction Instructions  Software Vintages Download the Instruction Manual Here

A Serial 1-Wire Recorder

Please note that LOG08-II is now discontinued. This information is provided for reference only. 

This is the second generation of 1-Wire logging devices (LOG08 was the first) and this project builds on the success of it's predecessor, TEMP08.  LOG08-II retains many of the previous features of the TEMP08, and adds some extras.

Features of the LOG08-II include;

  • Standard RS232 serial interface between the Dallas/Maxim 1-Wire bus and a host PC

  • provides real-time relief for the host PC by removing the burden of providing the precision timing required by the 1-Wire bus

  • No connection to PC required for stand-alone logging

  • Polling display and logging support for the following 1-Wire environmental sensors;

    • DS18S20, DS18S20-PAR, DS1822, DS18B20 and DS1920 temperature sensors

    • DS2438 based Sensors

    • DS2423 based counters

    • DS2450 based voltage sensors

  • Easy option programming (Set and Forget) - NO option jumpers required.

  • Capability to interface up to 60 different sensors and log up to 24 of them

  • Optional on-board DS2438 or DS18S20 temperature sensor

  • Optional on-board humidity sensor

  • Connectivity to 1-Wire bus via either terminal strip or RJ-12 connector

  • Large EEPROM capability for sensor logging

  • Discrete commands for setting all important parameters

  • Battery backed up Real Time Clock for displaying time of day with results of sensor polls or logs

  • PCB Size fits into optional PacTec CM5-125 case

  • EASY software upgrades via recyclable processor changes

Here is what LOG08-II looks like (may not be exactly as shown):

Connector Definitions

  • J1 Power Input connection.  12 to 16 Volts AC or DC required

  • J2 Serial Interface connector.  Standard DB-9 female connection.

  • J3 1-Wire and external interface.  +5V, GND and DQ provided.

  • J4 RJ-12 interface for 1-Wire bus.  +12V, +5V, GND and DQ provided.

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Last Updated January 1, 2020

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