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3 votes
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Convert a char array to Flash string

Direct answer F() takes immutable string literals, that are known at compile time, and places them into flash ("PROGMEM") instead of RAM. snprintf() creates strings at runtime and places ...
timemage's user avatar
  • 5,299
2 votes

How to clear SoftwareSerial values?

For the hardware serial port, the buffer is 64 and I was reading at least 100 times. Every read will clear one byte of data from the serial buffer at a time. For the software serial port, you do a ...
Sonder's user avatar
  • 191
1 vote

SIM808 does not support SSL related AT commands

I updated the firmware version: 1418B05SIM808M32. Now all commands are working fine.
mohamed ali's user avatar
1 vote

How to GET HTTP Request from Arduino to Firebase?

It is just the server problem. I just changed a website and it works.
Cheeseburger's user avatar

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