TEMP08 Description
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Introduction  Description Schematic Instructions  Software Vintages  Differences with TEMP05  FAQ  HomeSeer Setup References Ordering Information Download the Instruction Manual Here

  Please Read the FAQ's

(we're not kidding - we get a lot of e-mails with questions that are already addressed in the Frequently Asked Questions web page)

Note: 1-Wire is a registered Trademark of Dallas Semiconductor

The TEMP08 is based on the TEMP05, which was originally developed by Midon Design to be a serial logging interface between the Dallas Semiconductor/Maxim 1-Wire bus and a host PC.  It was set up to log temperatures from the Dallas Semiconductor 1-Wire Weather Station and up to 20 additional DS18S20 1-Wire Thermometers. It has since evolved to also read multiple Dallas Semiconductor 1-Wire Rain Gauges, 1-Wire Barometers, 1-Wire Humidity Sensors, and other 1-Wire devices, up to 60 in total.  The TEMP08 can be configured to send records of sensor readings  through the serial port every 1 to 99 minutes, or on demand if required. The poll setting is adjustable in 1 minute increments. The temperatures can be sent in either Celsius or Fahrenheit, however all other sensor outputs (wind speed, rain count, barometric pressure, etc.) are in Imperial units, in other words, not SI (metric).  A sample output string is shown in Figure 1.

In a typical application, TEMP08 is connected to a spare serial port on a PC.  Serial interface software is then used to gather the data received from TEMP08 and process it.  Many users have interfaced TEMP08 into the HomeSeer product, which can be used to automate lights, HVAC, sprinklers, and other devices, based on the sensor readings from TEMP08.

Midon has provide a sample script for interfacing TEMP08 to HomeSeer.  Please also check the HomeSeer Bulletin Board for plug-ins that simplify the interface task.

TEMP08 can be used with just the DS18S20 sensors or with a mix of the many other 1-Wire sensors available today such as the following:

  • AAG 1-Wire Weather Station (one only)
  • DS18S20 temperature sensors
  • DS1820 temperature sensors
  • DS18B20 temperature sensors
  • DS1822 temperature sensors
  • DS1920 temperature sensors
  • DS2401 serial ID's (will report presence only)
  • DS2408 based input/output sensors
  • DS2423 based Rain Gauge
  • DS2423 based Lightning detector
  • DS2423 general purpose counter
  • DS2438 based Humidity Sensors
  • DS2438 based Barometer
  • DS2438 voltage monitors
  • DS2450 voltage sensors

Except as noted for the Weather Station, TEMP08 can interface to any multiple combinations of sensors, up to a total of 60 in all.

Figure 1  Sample of Output


SUN 16:52:46
Reading Sensors...
Humidity #01[DC0000002B274726]=58%
Voltage #01[520000002B25A826]=00.12V 05.05V
Voltage #02[020000002B2CB326]=03.98V 05.03V
Lightning #01[D4000000045C621D]=00020 24592
Temp #01[4C00080031220C10]=70.80F
Temp #02[10000800312D2B10]=79.80F
Temp #03[520000002B25A826]=76.21F
Temp #04[020000002B2CB326]=72.77F
Temp #05[DC0000002B274726]=76.21F
>SUN 16:53:14

Missing #03[600008001E316D10]

> SUN 16:53:25

Restore #03[600008001E316D10]


Last Updated March 11, 2022

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