D1 Mini Shield – RGB LED (Individual)

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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Preview – Heltec Cube Cell Board with LoRa Wan

Heltec offers a low-power board with LoRa in a miniature format here. The price is around €13 on the usual platforms. What is a preview: As I am increasingly losing track of ordered hardware, I will write a small preview after ordering. When I get to the hardware, I will then...

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Preview – Round 1.28 inch TFT LCD Display

Here is a round display, with 240 x 240 pixels. What is a preview: As I am increasingly losing track of the ordered hardware, I will write a small preview after ordering. When I then get to the hardware, I will replace the corresponding preview with the actual post. This way, you will receive the...

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D1 Mini Shield – RGB LED

7 RGB LEDs arranged in a circle, each LED can display 24-bit RGB colours and each LED can be switched individually. Facts 7 RGB LEDs arranged like a flower, LED individually controllable. Description Name D1 ESP32 C3 S2 Signal pin (pre-assigned) D4 GPIO2 16 6 16 Circuit diagram Compatibility D1 Type Compatible Reason if not D1 mini Yes D1 ...

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D1 Mini Shield – I2C Connector

Additional board with three connectors for connecting a TFT display, the I2C bus and an I/O device. Facts TFT socket I²C socket I/O socket TFT socket Connection Pin Description Name D1 ESP32 S2 C3 1 Backlight TFT_LED NC 2 Ground GND GND 3 Reset TFT_RST RST 4 Register Select TFT_DC D8 15 5 A5 / 5 …

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ESP D1 Mini 8x8 Matrix-Banner

D1 Mini Shield – Matrix LED Shield

An 8x8 LED Matrix in red. Facts 8x8 LED Matrix (One module) Data and clock lines are fixed and cannot be adjusted via solder bridges Description Name GPIO Clock CLK 14 Data DIN D7 Schematics Compatibility D1 Type Compatible Reason if not D1 mini Yes D1 mini Pro Yes Not tested D1 mini Lite Yes Not …

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Bars in Crystal LCD Retro Style

I am always surprised that there are still a few readers here on the blog. Recently, Siegfried messaged me and said he wanted to display some bars on a Cristal LCD display, and if I had ever done it before. The answer was no, but that was set to change soon. Facts Parts list Arduino Uno Arduino LCD…

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