Thanks Sara

Hi.
Yes.
It’s easier to buy the ones that already come predefined to use the external antenna.
Regards,
Sara

I really appreciate all of the effort you all go through to explain all of this to the community. I’m fairly new-ish to modifying boards, so I’m a little confused on what the photos are telling us. I don’t see any resistor at all, but I do see the three solder “drops” located within “boxes”. In order for the external antena to work, do I “erase” the bottom line located between the left “drop” and the bottom “drop” and then connect the line located between the top “drop” and the left “drop”? Or is there an actual set of contacts that need to be disconnected and new set connected?

Thank you in advance for your assistance.
Ron.

Many thanks in advance for any help

Sorry about the messed up msg – I was “saving” it as I went along and I just forgot to delete some of the earlier existing copy. It’s called “proofreading” right?

Hello Sara, let me first say that I LOVE how you guys work. I mentioned this in another msg – another subject – but I have several of your books and they are immensely helpful – thank you for that.

Now, I don’t know if this thread is still open or not but I guess I’ll see! I’ve been struggling for hours – maybe even days trying to get this ESP32-“U” board working. What a comedy or errors and limited information about just about everything in the Arduino world! Lots of “learning curve” – OK enough of my stumping.

I am working on a project whereby I can use my current doorbell chime and its’ 18vac existing cabling, combined with an ESP32-U and a couple of ESP32-Cams. I’m getting there albeit very slowly – “learning curve”!! The “32U” is acting as a server of sorts whereby it controls a dual relay to physically trigger the doorbell chimes. It is mounted, along with a PS and the relay board inside the doorbell housing – all powered of course by the existing 18vac transformer. This part works GREAT – after I figured out all the little nuances of the 32U.

First of all, determining what “board” to use in the IDE was interesting but it was, after all, simple – just use the “DOITESP32DevKit” along with “your” Hello Sara, let me first say that I LOVE how you guys work. I mentioned this in another msg – another subject – but I have several of your books and they are immensely helpful – thank you for that.

Now, I don’t know if this thread is still open or not but I guess I’ll see! I’ve been struggling for hours – maybe even days trying to get this ESP32-“U” board working. What a comedy or errors and limited information about just about everything in the Arduino world! Lots of “learning curve” – OK enough of my stumping.

I am working on a project whereby I can use my current doorbell chime and its’ 18vac existing cabling, combined with an ESP32-U and a couple of ESP32-Cams. I’m getting there albeit very slowly – “learning curve”!! The “32U” is acting as a server of sorts whereby it controls a dual relay to physically trigger the doorbell chimes. It is mounted, along with a PS and the relay board inside the doorbell housing – all powered of course by the existing 18vac transformer. This part works GREAT – after I figured out all the little nuances of the 32U.

First of all, determining what “board” to use in the IDE was interesting but it was simple – Just use the “DOIT ESP32 Dev Kit” and the sketch from your CAM book “https://RandomNerdTutorials.com/esp32-esp8266-web-server-outputs-momentary-switch/” – the IDE board was one of your suggestions from here in the forum section.

Along with the IDE board selection, there was the issue of the “antenna”. First of all, this particular board “U32” does not have an “internal” antenna. Try to find that essential info anywhere in the Arduino world. So naturally I spent a great deal of time trying to get the U32 to connect to WIFI – about a day and a half on this issue. Then, trying to get the external ant connect was a chore too. My big hands just couldn’t get the right angle – that’s where your “just snap it down … it won’t break” comment came into play. Everything I have up to this point works great. Doorbell rings just by pressing the HTML button in the sketch!

As I said, I’ve got a long way to go, but I wanted to see if some of this info might help someone else trying to connect an antenna to an ESP32U Module.

Sorry about the “book” but I just wanted to layout my project for you because I am sure I will be coming back to you for additional “Help”.

Thanks a bunch for all your help, Dan Cook