- Fri Apr 12, 2019 9:10 am
#81725
No, you don't need to use a transistor for GPIO04.
GPIO15 is a bit special as it needs to be pulled down during boot up to put esp8266 in normal run mode. That is in conflict with using it directly for cs and is why the transistor is needed if using GPIO15.
That looks like your current list of libraries. You have to install the Ethernet library.
In arduino choose sketch menus, select 'include libraries' and select manage libraries.
You will get a dialog box allowing to choose new libraries. Select Ethernet and then press install. THis installs the library under your libraries folder.
You can now use #include <Ethernet.h> in your sketch