Update:DIY wireless temperature sensor for Tellstick

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sonnyboy
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Re: Update:DIY wireless temperature sensor for Tellstick

Post by sonnyboy » Thu Jan 18, 2018 11:08 am

lioelec wrote: I think you shoud be add offset -0,7°C
The DS18B20 is specified as ±0.5°C Accuracy from -10°C to +85°C. That's perfectly acceptable for regular weather/temperature monitoring.
Try another Ds18B20 and se if you get the same result.
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lioelec
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Re: Update:DIY wireless temperature sensor for Tellstick

Post by lioelec » Thu Jan 18, 2018 11:08 am

ok thanks for information and for your work.
I would make other circuits, It's possible to modify .hex file to change ID 124 ? I don't have mplab compiler.

regards
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sonnyboy
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Re: Update:DIY wireless temperature sensor for Tellstick

Post by sonnyboy » Thu Jan 18, 2018 11:08 am

lioelec wrote:ok thanks for information and for your work.
I would make other circuits, It's possible to modify .hex file to change ID 124 ? I don't have mplab compiler.

regards
You don´t have to change the id, its generated by the ds18b20 unice serialnumber.
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lioelec
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Re: Update:DIY wireless temperature sensor for Tellstick

Post by lioelec » Thu Jan 18, 2018 11:08 am

ok it solve problem
thanks
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tronde
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Re: Update:DIY wireless temperature sensor for Tellstick

Post by tronde » Thu Jan 18, 2018 11:08 am

This is a great project.

Is it possible for you to make a version reading one of the analogue inputs of the PIC instead of the DS1820? Access to the analogue input makes it possible to read a lot of other sensors, e.g. gas, water level, light or an PT100 element for high temperature reading.

niclasf
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Re: Update:DIY wireless temperature sensor for Tellstick

Post by niclasf » Thu Jan 18, 2018 11:08 am

Pin 7 is used as an analog input. The battery status can be read in the humidity data field in esic_clone up to version 0.6.
The input pin can handle voltages from 0-Vdd and the result will be presented as a number from 0-127.

Another approach is to use a 1-wire chip DS2760 and a K-type thermocouple.

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Re: Update:DIY wireless temperature sensor for Tellstick

Post by niclasf » Thu Jan 18, 2018 11:08 am

New version available for download.
Please read here for Important information regarding changed electrical scheme.
http://elektronikforumet.com/forum/view ... =3&t=63772

esic_clone-0.7 have support for DHT22/RHT03. The send interval is set to 1 minute in the included hex-file.
esic_clone-0.7.zip
Support for DHT22. Send interval is 1 minute. HEX-file is included in zip-file
(9.67 KiB) Downloaded 337 times

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Re: Update:DIY wireless temperature sensor for Tellstick

Post by niclasf » Thu Jan 18, 2018 11:08 am

New version available for download.

esic_clone-0.7.1
More stable DHT22/RHT03-readings. Correct usage of the OSCCAL-value to generate the sensorID in the case a DHT22 is used.
The send interval is set to 1 minute in the included hex-file.

See first post for download.

Baltta
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Re: Update:DIY wireless temperature sensor for Tellstick

Post by Baltta » Thu Jan 18, 2018 11:08 am

I have ver 0.6 temperature sensor. And i like to measure one analog measurement. Where i connect it? I have my house electricity comsuption 0 to 25 amp transformed to 0 to 3,6 V dc. So if it works i can monitor my electricity consuption. But where i connect this 3, 6 V dc. Above there is says connect pin 7. Now there is led.

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Re: Update:DIY wireless temperature sensor for Tellstick

Post by niclasf » Thu Jan 18, 2018 11:08 am

Not so easy. You connect to pin 4, BUT you will need to add a couple of diods and also update the sw very slightly.

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Re: Update:DIY wireless temperature sensor for Tellstick

Post by lioelec » Thu Jan 18, 2018 11:08 am

good update for PIR sensor
telldus detect it on sensor view ? logical information 0-1 ?
What is PIR sensor you use ?
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Baltta
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Re: Update:DIY wireless temperature sensor for Tellstick

Post by Baltta » Thu Jan 18, 2018 11:08 am

BUT you will need to add a couple of diods and also update the sw very slightly. Can you show how to connect those diodes and what software version i have load to PIC. Thanks for good advice.

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Re: Update:DIY wireless temperature sensor for Tellstick

Post by niclasf » Thu Jan 18, 2018 11:08 am

esic_clone-0.8.3 is available for download.

lempa
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Re: Update:DIY wireless temperature sensor for Tellstick

Post by lempa » Thu Jan 18, 2018 11:08 am

Hello all
Can i use this solution but get accuracy from -30?

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Re: Update:DIY wireless temperature sensor for Tellstick

Post by niclasf » Thu Jan 18, 2018 11:08 am

The accuracy is the same as the spec for ds18b20 and/or the DHT22/AM2302 sensor. The spec can be found on the web.
I hope this helps.

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