ESP32-S3-WROOM-1U-N16 for WiFi

[Jordan22xx]

Hello everyone,

I just got an https://www.kasuo.com/product/esp32-s3- ... price-pdf/ and I’m excited to try it out. This module has WiFi, decent memory, and supports modern peripherals, seems ideal for IoT or wireless microcontroller projects without needing extra parts. My plan is to build a small sensor/control board: the ESP32-S3 will read some sensors and send data over WiFi to a server or phone. It should be easy to power from 3.3 V, and I like that I don’t need a separate WiFi chip or Ethernet.

Before I get started, I have a few questions:

What’s the best way to connect sensors and switches to this module to get stable readings and avoid noise?
Any recommended libraries (or Flowcode components) for using WiFi, I/O pins, and ADC with this ESP32
When powering the module, are there tips for smoothing supply (caps, decoupling) to keep WiFi stable?

If anyone here has worked with ESP32-S3 (or similar ESP32 modules) in Flowcode or custom code, I’d love to hear your thoughts and tips to avoid beginner mistakes.

Thanks in advance!

[BenR]

Hello,

The ESP32 and S3 devices are very nice to work with and there's not a lot you can do wrong with them.

Personally I would look at the DevKit modules as these are very cheap and have everything on them to get you going.

https://www.aliexpress.com/item/1005008750977454.html

The module already include caps etc so it really depends on how you plan to power it e.g. via USB or via your own power supply circuit. The Wifi/Bluetooth does use a bit of current and so on some of our boards we power the module from 5V and have added an extra 3V3 regulator so that the module has plenty of current.

If you do want to use just the chip then I suggest looking at the schematic of the DevKit module as a starting point.

https://docs.espressif.com/projects/esp ... -reference
https://dl.espressif.com/dl/schematics/ ... 221130.pdf