ESP8266 Community Forum

- Sat Jun 06, 2015 2:31 am #19626 thanks a lot twaymouth : I got what I need !

ESP8266
Temperature : 26
Node ChipID : 10550237
Node MAC : 18-FE-34-A0-FB-DD
Node Heap : 12528
Timer Ticks : 17461819

I really want to thank you for all the assistance provided to me on this project : it is my first trial using the esp.
Thanks again for the instruction relevantto the esp recovery procedure .

All the best.
Ambrogio
IW2FVO , north Italy

- Sat Jun 06, 2015 4:51 am #19630 Glad to hear you got it working and good luck with you future ESP endeavors.

- Sat Jun 06, 2015 5:44 am #19635 Final touch:
How could I display temperature with two decimal places ?
Where is this data format managed ?

Ambro

- Sat Jun 06, 2015 6:02 am #19638 I have added the following line to ds18b20.lua in order to round the value.

t = string.format("%02.1f",t)

This line is added almost at the end of ds18b20.lua, before the line "return t". To change the number of decimal places adjust the value before f. I.e. .1f .2f etc.

I am not sure if this is the most efficient or correct way to do this but it works for me. After editing ds18b20.lua you will need to upload and compile it again.

I have posted my ds18b20.lua to this url for reference https://docs.google.com/file/d/0B6gn-WoB7xpCdG95SjFPUE9xVVE/edit?usp=docslist_api

Be aware that I have stripped my ds18b20 down and it can only display Celsius, if anyone else has any suggestions on how to round this value input would be appreciated.