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by Aravind_Raj
Thu Sep 14, 2017 12:18 pm
Forum: Networking and servers
Topic: Is it any possible to convert analog phone to IP phone using Raspberry PI
Replies: 9
Views: 1453

Re: Is it any possible to convert analog phone to IP phone using Raspberry PI

Much easier to either buy a dedicated IP phone, or get an app for your PC/mobile or maybe Pi that will turn it into an IP phone. I use Linphone on my Linux PC, Zoiper on my Adnroid mobile and a proper hardware IP phone as well. Your idea is a good one but I can't attend the call via head phone. I n...
by Aravind_Raj
Thu Sep 14, 2017 11:47 am
Forum: Networking and servers
Topic: Is it any possible to convert analog phone to IP phone using Raspberry PI
Replies: 9
Views: 1453

Is it any possible to convert analog phone to IP phone using Raspberry PI

I need IP Phone for VOIP purpose. I have Raspberry PI and analog phone. Is there any possibility for interfacing analog phone with Raspberry PI.
by Aravind_Raj
Fri Jul 28, 2017 12:51 pm
Forum: Automation, sensing and robotics
Topic: Temperature sensing 0 - 800°C
Replies: 10
Views: 1058

Re: Temperature sensing 0 - 800°C

First of all, I would like to say thank for all. Let I try your suggestion and update the status soon...
by Aravind_Raj
Thu Jul 27, 2017 6:40 am
Forum: Automation, sensing and robotics
Topic: Temperature sensing 0 - 800°C
Replies: 10
Views: 1058

Re: Temperature sensing 0 - 800°C

If you find a one wire sensor that will work let us know. At those temperatures, you will have to go with a thermocouple, and then find the best way to interface it with your RPi. There are lots of options for output types on thermocouple signal conditioners. Unfortunately, this would be MUCH more ...
by Aravind_Raj
Thu Jul 27, 2017 6:37 am
Forum: Automation, sensing and robotics
Topic: Temperature sensing 0 - 800°C
Replies: 10
Views: 1058

Re: Temperature sensing 0 - 800°C

Temperature of what? Contact or non-contact? This thermocouple is rated for 800°C http://www.thermosensedirect.com/acatalog/Type_K_Brake_Disc_Rubbing_Style_Thermocouple_TK_KI.html?gclid=EAIaIQobChMIzJmF0rOm1QIVprztCh2mwQ1TEAYYAiABEgJb7vD_BwE This handheld device is 1200°C http://eurolec-instruments...
by Aravind_Raj
Wed Jul 26, 2017 6:48 am
Forum: Automation, sensing and robotics
Topic: Temperature sensing 0 - 800°C
Replies: 10
Views: 1058

Temperature sensing 0 - 800°C

Hello Team,
I need to read temperature via 1 wire communication like DS18B20. DS18B20 can read maximum 125°C only. But i need to read 0 - 800°C. Kindly suggest any sensor available for this operation.
by Aravind_Raj
Fri Jun 16, 2017 12:33 pm
Forum: Automation, sensing and robotics
Topic: Reading Millivolt
Replies: 6
Views: 825

Re: Reading Millivolt

gordon77 wrote:Are you hoping to read a millivolt, 0.001v, or have millivolt resolution, 5.001v ?
I need to read from 0.001v to 1v. Resolution can accept up to + or - 10. But the output value needs in stable one.
by Aravind_Raj
Fri Jun 16, 2017 12:28 pm
Forum: Automation, sensing and robotics
Topic: Reading Millivolt
Replies: 6
Views: 825

Re: Reading Millivolt

You need to do what every other application does when reading very small voltages. Amplify. An operational amplifier will allow you to increase the voltage of the signal you are measuring such that you are able to read it with a standard ADC. Some ADCs have built in amplification such as the ADS111...
by Aravind_Raj
Fri Jun 16, 2017 7:23 am
Forum: Automation, sensing and robotics
Topic: Reading Millivolt
Replies: 6
Views: 825

Reading Millivolt

Hi all, I need to read millivolt. I use ADS1115 but its output value does not stable it change each and every second. Kindly suggest stable ADC module for millivolt

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