Actions
Forum Thread Details
  • Replies 6 replies
  • Subscribers 222 subscribers
  • Views 656 views
  • Users 0 members are here
Related

1 wire bus

Former Member

Hi Peeps,

 

I am about to embark on a 1 wire bus project using devices such as the Maxim DS18S20DS18S20+ temperature sensor and other similar devices. The idea of the 1 wire bus seems groovy enough but I wondered if anyone out there had any experience of this stuff.

 

The concept of the project is in 2 major parts, the physical hardware implementation of devices connected ono the 1 wire bus along with a USB transciever to connect it into the main motherboard. The second part is the software which will be Linux based and the idea is to use the Linux DBUS mechanism to create a self describing (a method called introspection) platform for applications which are interested to get hold of sensor data. There is actually a 3rd parrt to this project which is the applications themselves, but before I go blabbing on in detail about the project I thought I ought to see if anyone has any comments to make first.

 

Fire away

Parents

  • Hi!

     

    Just wanted to give you info about my DS18B20 usage and experience. I'm using a DS2480B+DS2480B+ 1-wire driver to drive the network, ranging from 25 to 150 meter lengths thru a 16 channel mux and with 8-16 sensors per mux. The whole network is in total 2100 sensors spread over 20 pcbs with 16-channel muxes. It's more or less painless as long as you keep the total capacitance down on the network. Have the odd missed reading, but not many. They are all run on parasite power 24/7/365. A full scan takes 2520 seconds :-)

     

    I would not use these devices on a PCB to check local temperature, but for bigger networks I haven't really found anything competing with these buggers!

Reply

  • Hi!

     

    Just wanted to give you info about my DS18B20 usage and experience. I'm using a DS2480B+DS2480B+ 1-wire driver to drive the network, ranging from 25 to 150 meter lengths thru a 16 channel mux and with 8-16 sensors per mux. The whole network is in total 2100 sensors spread over 20 pcbs with 16-channel muxes. It's more or less painless as long as you keep the total capacitance down on the network. Have the odd missed reading, but not many. They are all run on parasite power 24/7/365. A full scan takes 2520 seconds :-)

     

    I would not use these devices on a PCB to check local temperature, but for bigger networks I haven't really found anything competing with these buggers!

Children