Thanks for replying @MicroController. Very good points thanks very much.

Fantastic thanks very much for your help will give it a go.

Hi,

I have bought one of these blue SIM800L v2 boards ( https://www.aliexpress.com/item/1005007048683266.html?spm=a2g0o.order_list.order_list_main.41.320418029BPwAs ) to connect to my ESP32. It takes a power supply of 5v (will have a separate one to my ESP32) but I am confused as to whether the tx ...

Thanks very much for getting back to me. I think this would include the component source and header files directly rather than create a binary that I could link into my project (e.g. a ".o" or ".a")? Is there a way of linking a pre-built binary or maybe this is how the ESP setup works?

Many thanks ...

Hi All,

I have a few projects on the go and have created a number of functions that are common to them all. I am looking to create a common library for them and then use this library in my other projects. I have searched around but can't find any instructions on how to create the library and then ...

Thanks very much for getting back to me. I have tried to do the connect and send each time and that seems to work so looks like you were correct. Thanks very much for your help.

Hi,

I have taken the SMTP example and added the code to my project so that when a trigger is activated it will send me an email. In order to do this, I have wrapped the example code with a C++ class and have separated the smtp_client_task function into 2 methods - one to do the initial connection ...

Sorry I was being dozy. Of course the voltage stays the same it is the current that would vary by switching the circuits on and off. The simulator helped a lot to correct my mental picture. Thanks very much. When the bits arrive I will wire it up and give it a god.

I have now managed to get it working fairly well and have ordered some more capacitors/ resistors. My next challenge is how to wire it up to read from 4 different probes. I have done a lot of Googling and can't find anything.

Ideally I would use a single fixed resistor and capacitor to save space ...

Just wanted to check on the capacitor types. I unfortunately don't have the correct sizes of ceramic capacitors - only 104 and 103. i.e. these ones....

https://cricklewoodelectronics.com/images/P/CERsingle25-01.jpg

I have a load of the following types though and was wondering if I could use any ...