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USBTemp
USBTemp measures the temperature and connects via USB to your computer. IntroductionUSBTemp provides a thermometer. It is based on the DS18S20 digital thermometers. In addition, the thermometer connects to an USB port - you can read the temperature using a commandline tool. In combination with RRDTool you can easily create temperature graphs:
This is a live graph of the temperature in Kaiserslautern, Germany - at least if my server at home is up and running. I describe my setup at home here: USBTemp: Continuous Temperature Monitoring. FeaturesAt this time, USBTemp provides these features:
DownloadThe current version can be downloaded from the "Download" page. The tarball contains the firmware, the host software and the schematic. HardwareThe hardware consists of an ATMega168, the DS18S20 temperature sensors and some support elements. It is described on the USBTempHardware page. SoftwareThe host software uses libusb to connect to the hardware. You can query the device for available temperature sensors: $ ./usbtemp sensors 2 sensor(s) found, querying sensor 0: ID 9F17A5010800 type: (DS18S20) sensor 1: ID B46865010800 type: (DS18S20) The IDs are the actual unique hardware IDs of the DS18S20 sensors. Afterwards you can use the ID to query a sensor: /usbtemp temp B46865010800 searching sensor with id B46865010800 - using sensor handle 1 reading sensor 1 (°C): +1.1875 If you want to use the raw temperature value in a script, simply discard stderr: $ ./usbtemp temp B46865010800 2>/dev/null +1.0000 The host software only depends on libusb and has been tested on Linux and Mac systems. With libusb-win32 it should be possible to compile it on Windows as well - but this is currently untested. Building the softwareTODO. CreditsThe microcontroller firmware uses several libraries:
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so did you get the mega168 working? Would the new arduino mega3xx work it is similar to the 168? If so is it a usb keyboard? that would be easy to get keys in c. What speed logging? I have a 24 bit adc at 10ksps