Freenove Breakout Board for ESP32 / ESP32-S3 WROVER WROOM, Terminal Block Shield HAT with Pin Header, 5V 3.3V Power Outputs, GPIO Status LED

Extremely handy for viewing what your microcontrollers are up to, and connections are nice and easy. I like using these in small din-rail mounts for projects I expect to mess with every so often.Standard barrel jack makes for easy hookup, though it might be nice to support 12v instead of just 5v. Each side has a swappable rail between 3v3 and 5v, so powering accessories as well as your microcontrollers is nice and easy.As long as your board features legends on the top side it's super easy to wire with, and I've not had any boards in the two-row style not work with it so far. If you want flexibility and ease and don't mind using up some space and paying a little for it, this is certainly worth the money, especially compared to the other boards that are dedicated to single microcontrollers.

I do a lot of ESP32 development and have a very small workspace. This board allows me to see what each IO pin is doing with its LED lights and connect wire or plugs to each IO. The only grip I would have would be the bottom of the board with the protruding pins. They will scratch your work surface, So I placed rubber feet on the board. They should have included them with the kit. The power strip screws are very tiny, and it does come with a screwdriver, Don't lose it. Its a very good board for trouble shooting as well. Does provide two way power connection and offers 3v & 5v power strips to connect your sensors or other DIY boards. There is one catch using this dev board. You have to use their ESP32 or ESP8266 board (FREENOVE) Which isn't a bad thing. They make very good EPS32 boards and very easy to program using VS CODE or Arduino IDE software. The IO pins are very well printed on the bottom of the board and on stop. It even has mounting hold to imbed this board into your DIY projects. I wished I had this board 3 years ago. Very good quality and sturdy.

These are really nice. I bought 2! The document is very, very thorough.

This product is excellent for a PERMANENT setup for an ESP32 or ESP32 S3 board. I say permanent because external power is needed for the Red Line of pins, the 5V column. Any of the Ground Pins Column can be used in USB mode however. The 3.3V next to the Power Input can be used in USB mode, however there are only 8 pins for this usage.Pros:Each pin slot has a Female Hole for Male Pins for screwing it down to connect. Each pin has Male Connectors for Signal, 5V and Ground. There is also a set of 8 (Eight) male pins for both 3.3V and Ground.Cons:The column of Red Pins (5V) is only usable with an outside power source, 7-12V.

ESP32 dev boards typically have rows of header pins space by one inch so they do not fit in a solderless breadboard. This board accepts them as well as narrower boards. The built-in LEDs on each pin are like a logic analyzer for debug. Pins that are changing state often like the UART or other serial I/O may not trigger the LEDs, so they are mostly useful for static logic indication. Be careful how you power the dev boards from the on-board supplies or USB.

This breakout board is a real joy to use. It provides an LED indicator on nearly every pin, and accepts an external power source. Those LEDs are handy when troubleshooting, and they saved me time identifying connection mistakes quickly.Keep in mind, the screws on those terminals are tiny, but the supplied screwdriver is adequate. Once paired with my ESP32-S3-DevKitC-1, the assembly still fits in the box supplied with the product, which is kind of a bonus.This product may not work with every ESP32 variant, so pay close attention to the pinouts of your development board and compare with those found on this breakout board.At first glance, I wasn't sure this would work with my ESP32-S3-DevKitC-1, but it works great. The breakout board has 40-pins, but the (DevKitC) ESP32-S3-WROOM-1 breakout has 44-pins. The 40-pin socket simply plugs in to the middle 40 pins of the DevKitC, with one pin unconnected at each end. This is not a problem, since those pins are redundant 3V3 and GND pins.Just for fun, enjoy this quick sample code to see all those LEDs in action:#include <Arduino.h>const int gpioPins[] = { 4, 5, 6, 7, 15, 16, 17, 18, 8, 3, 46, 9, 10, 11, 12, 13, 14, 2, 42, 41, 40, 39, 38, 37, 36, 35, 0, 45, 48, 47, 21, 20, 19};const int numPins = sizeof(gpioPins) / sizeof(gpioPins[0]);void setup() {for (int i = 0; i < numPins; i++) {pinMode(gpioPins[i], OUTPUT);}}void loop() {for (int i = 0; i < numPins; i++) {digitalWrite(gpioPins[i], !digitalRead(gpioPins[i]));delay(100);}}update: I'm taking a few stars off. The 5V signal pin on the breakout isn't connected with the DevKit 5V pin.The product description clearly states the abundant (red) 5V0 pins on the breakout are only powered by the external power supply. But the ESP32-S3-DevKitC has a dedicated 5V pin from the 5V+ supplied by either USB port. FYI, the USB port powers the DevKit when no external supply is used. This pin is broken out in the lower-left corner to a blue LED. But, sadly, it is NOT connected to its adjacent (yellow) signal pin. Instead, the pin is tied to all the other (red) 5V pins powered by the external supply through the buck convertor. As far as I can tell, this is the ONLY (yellow) signal pin on the breakout not connected with the corresponding pin on the DevKit. The whole point of the breakout is to make connection with and troubleshooting of the smaller DevKit easier. I presume the designer of this breakout felt users may try to power external devices from the yellow 5V signal pin, and felt it necessary to block them from doing so.

Only tried with a couple of the ESP modules, some of which don't fit standard protoboard. Works great for those.I 'think' I really like the little state LEDs on each pin. Makes a really quick indicator of Vcc, 3.3 pins to verify orientation. I've not had issue with those LED indicators causing input pins to have an incorrect state.. it does include buffers between the pin and the LED/resistor, so maybe I am wrong. I do like the LEDs fwiw

Of all the breakout boards out there, these are the most useful. Rather than needing breakout boards tailored to each microcontroller, this makes it easy to configure as needed. The build quality is good, the board is neatly laid out, and it fits my Picos, Arduino Micro, Arduino Nano, Adafruit Kee Boar, etc.