[time-nuts] Temperature (environmental) sensors

Didier Juges shalimr9 at gmail.com
Wed Jan 4 20:12:03 EST 2017

I have C code (for the 8051) that is simply the translation of what's in the app note. It does temperature and humidity but not the barometric pressure (no double precision float on that compiler).

Works exactly as advertised. I have two.

You can see one in action here:


This is my wife's green house, with temperature in C and F and humidity.

Let me know if you are interested.

Didier KO4BB 

On January 4, 2017 1:32:24 PM CST, Dan Kemppainen <dan at irtelemetrics.com> wrote:
>Hi All,
>Just ordered a few of these BME280 sensor boards. Also ordered a FTDI 
>C232HM cable to try to SPI or to bit-bang data from the board directly 
>to the PC. If a PIC or similar is required, does anyone on the list
>16Bit PIC code (pic24/dsPIC) C code for reading these BME280 sensors 
>laying around?
>They really look like a neat little unit. Thanks to all for the heads
>on these ones!
>On 1/4/2017 12:00 PM, time-nuts-request at febo.com wrote:
>> Message: 7
>> Date: Wed, 4 Jan 2017 09:53:24 -0000
>> From: "David J Taylor" <david-taylor at blueyonder.co.uk>
>> To: "Discussion of precise time and frequency measurement"
>> 	<time-nuts at febo.com>
>> Subject: Re: [time-nuts] Temperature (environmental) sensors
>> Message-ID: <076CCA551DC142C2A8D93CF02A4AD1A3 at Alta>
>> Content-Type: text/plain; format=flowed; charset="UTF-8";
>> 	reply-type=original
>> I like the Bosch BME280 conneced to a Raspberry PI.
>> --   Björn
>> ========================
>> Some performance plots are here, with some comparison between the
>> readings from various sensors.
>>   http://www.satsignal.eu/mrtg/performance_air_temp.php
>> This is on mixed Windows/Linux platforms.
>> Cheers,
>> David
>> -- SatSignal Software - Quality software written to your requirements
>> Web: http://www.satsignal.eu Email: david-taylor at blueyonder.co.uk
>> Twitter: @gm8arv
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Sent from my Moto-X wireless tracker while I do other things.

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