For projects that cannot be connected to the serial port, error analysis can sometimes be tricky. So it's nice that there are projects like the WEB-Serial library that make it easy to open a website on the ESP to show serial output there. I have tried the free version of the library. There is also a...
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I visited Speedy Ali again and browsed around a bit when this board caught my eye. It has an ESP32-C3 and is in a form factor that fits on a breadboard.
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Sometimes a remote control or a joystick is needed to test a project or just have fun. The following describes how to connect an ESP32 via Bluetooth.
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The DHT can measure humidity with an accuracy of 2%RH and temperature with an accuracy of +/-0.5°C. The values are output on the OneWire bus.
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For another project, I needed relays to be able to switch a couple of pumps. This is where the ES32 boards caught my eye on AliExpress. They come completely ready to use and some even have a 240V power supply on board. CAUTION: Although the programming port on the boards is marked as 5V, the fact that my boards…
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Hardcoded SSIDs and Wi-Fi passwords in Arduino code are not a good thing. Entering Wi-Fi credentials via the console is no longer up-to-date, especially if you don't have a console connection. It would be nice to have a general solution that allows IoT devices to be easily connected to your own Wi-Fi without having to already have something in the code...
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Small prototype board to fit the D1 Mini series. Facts Compatibility D1 Type Compatible Reason if not D1 mini Yes D1 mini Pro Yes D1 mini Lite Yes D1 32 Yes S2 mini Yes C3 Yes Compatibility with D1 Boards Application Areas Views Programming Libraries Arduino ESP32 Library V2.0.2 Arduino ESP8266 Library V3.0.2 Test Program The board …
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This is a circuit board with a slot for the ESP01 and a relay for switching external voltages of up to 250V AC and 30V DC. On AliExpress, these boards start at around €2 without the ESP01, and are available in sets for around €3-4. As home automation and voice assistants are in...
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When I saw this add-on board, I wondered what the point was when there's already an add-on board with 8 RGB LEDs, which is much more versatile. Is it the lower price or simple purism? Facts An RGB LED Description Name D1 ESP32 C3 S2 RGB Pin D2 4 21 8 33 D1 Mini Shield – …
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An ESP32 with an adapter board for a breadboard. It needs to be soldered together by yourself and is available for around €5 on the usual platforms. What is a preview: Since I'm increasingly losing track of the hardware ordered, I'll write a small preview after ordering. When I get to the hardware, I will then...
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