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Once your Arduino IDE and COM driver is set up, just plug in this ESP32 board to your PC with a USB cable. The blue LED will start flashing and "Hello, My firstESP32" will be printed to the COM port. You can then upload an example sketch etc. There is no need to connect power to the pins as it will run off the USB port. There is a red power LED and blue LED connected to PIN 2. There are no pinouts printed on the board so just search for NodeMCU for pinout info.
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So easy to use with the Arduino IDE. So far I have created a web server and various weather monitors with a few external sensors, building on examples on various websites. I used to be an Arduino Nano fan, but from now on it will be ESP32 for my projects. The chip is extremely powerful and has a comprehensive range of digital and analogue inputs and outputs, most of which are bought out to external pins by this board. The board is well made and well labeled on both sides.
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Small compact and cheap have now had 12 of these boards all working well. They are bread board friendly. They have two LEDs on board one is annoyingly on all of the time the other one is controllable.
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This appears to have an identical PCB and components (except for the ESP32 module) to the "Ai-Thinker NodeMCU-32S" so web-searching for that gets you schematics and pinout etc. The ESP32 module is the ESP32-WROOM-32 which contains the Espressif ESP32-D0WDQ6 chip and 4Mbytes of flash. I found that it worked fine with the Arduino IDE, provided that you follow the "Random Nerd Tutorials" ESP32 setup guide, which seems to be the closest thing to an "official" guide from Espressif. It also works fine with Micropython (which I'm afraid does require fairly good understanding of the interface and software to set up). You need a good USB connector with a cable that's either very short or one that's nice and thick because it does seem a bit sensitive to power-supply droop.
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Autoflash is flaky - very unreliable - apart from that, pretty standard, i.e. everything else works as it should. Better quality clones work better! I wouldn't buy another one from here
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