kandi X-RAY | MQ135 Summary
kandi X-RAY | MQ135 Summary
MQ135
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Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of MQ135
MQ135 Key Features
MQ135 Examples and Code Snippets
Community Discussions
Trending Discussions on MQ135
QUESTION
i'm attempting to create a RESTful API using PHP. I'm unable to format it in a way I'm used to seeing. Would appreciate some guidance. Thank.
This is the current JSON output:
...ANSWER
Answered 2018-Mar-16 at 13:01The output is correct, as you're creating an array. If you want an object, create an object!
Do something like;
QUESTION
I programmed rather long Arduino application and when I tried to run it on my Arduino Nano(ATmega328P CPU),I found it crashed when it turns to "Serial.println(F("ESP8266_PHP_CONNECTED"));"(Line 462), just stopped there and printed abnormal thing such as "ESP8266_PHP_CONNECTBB", I don't know why did it happened even if the SRAM was enough.this is what I read from monitor
...ANSWER
Answered 2018-Mar-13 at 12:41You'd better be careful to deal with character buffers in your program.
Based on my short observation on your code, I found erroneous codes in ESP8266_MsgTx2Rx()
which is being called more frequently and looks suspicious because it's supposed to be called around before the crash.
Are you sure the length of the string to be read will be the only one byte? Otherwise, strcpy_P()
will cause memory corruption which might cause another crash when the corresponding memory would be referred to later on. Another point is ... Whenever calling malloc()
or new
, you should check the validity of the returned pointer first before using it as well.
QUESTION
I am trying to plot an histogram with the following script:
...ANSWER
Answered 2017-Aug-19 at 08:20Are you really sure you want the xscale as log and not the yscale? This uses hist
but with yscale set to log
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