AZDelivery LOLIN32 Lite V1.0 ESP-32 Rev1 WiFi Bluetooth Board 4MB Flash 500mA CH340 CH340G Lithium Battery Connector ESP32 compatible with Arduino Including E-Book!

There are a lot of ESP32 boards out there but this has good quality components and is built well as you'd probably guess if you have bought from AZDelivery before . I used them to create some custom LED flickering candles I can control using ESPHome + home assistant which work great.Also comes with links to good documentation and pinouts which is always a bonus as most sellers do not include this.

This is a nice board only complaint is that they don't bring out the 5v supply pin so you need to use a micro usb cable to charge the device.

I bought these as they were smaller (top-to-bottom) than my current modules, and I was after a smaller device for my new project.This device is nearly ideal in all ESP32 aspects; it runs all the expected code including FreeRTOS. It also has a small (JST) socket for the addition of small rechargeable battery, although there is no on/off switch present like on the TTGO boards.It has a built-in LED on GPIO pin 22 although that pin is, of course, part of the default I2C pair (the other being GPIO pin 21).It also exposes pins 12, 13, 14, 15 for use in JTAG debugging operations. Whilst this limits the amount of GPIO pins available for general use, it's a good option for debugging without multitudes of Serial.print statements littering your code.However, there are one flaw with this device which make it much more difficult to use in projects with a bespoke PCB.Firstly, if you look at the photo of the device, you will not find any kind of +5v or "Vin" pin. Yup, there is no dedicated 5v pin exposed. So what? Well, if this board is plugged into a PCB, the designer will have to ensure that there is a suitable (stable and clean) 3v3 supply on the PCB for this device, with (potentially) a suitable 5v supply for other peripherals.It's the only board I have in my collection that does not have a 5v pin. It's a strange decision IMHO not to include this.That aside, it's a good implementation of a standard ESP32 module with 4Mb of flash memory (so it can use two code partitions, for OTA [over the air] updates.

Amazon suggests a bundle with LiPo batteries. The entry for these makes very clear to check the polarity of the cells is correct, but if you buy the bundle you may not look at that page. So, if you do buy both, you can swap red and black wires using a small flathead screwdriver to lift up the tabs (gently!) then the terminals can be pulled out and moved to the correct side

I’m used to minimal printed instructions when buying things like microcontrollers. You just download them from the manufacturers website. This product advertises a free ebook which you have to register to download only to get a message which says it’s not been created yet when you try and download the English version.