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We also have a HD44780 datasheet with the detailed commands for control
Dimensions: 100mm long x 75mm wide X 25mm high
an environmental sensor with temperature
That's nearly all the GPIO available on a Pi
SparkFun Thing Plus - RP2040 home automation We also have a HD44780The SparkFun Thing Plus RP2040 is a low cost, high performance board with flexible digital interfaces featuring the Raspberry Pi Foundation's RP2040 microcontroller. Besides the Thing Plus or Feather footprint (with 18 GPIO pins), the board also includes an SD card slot, 16MB (128Mbit) flash memory, a JST single cell battery connector (with a charging circuit and fuel gauge sensor), an addressable WS2812 RGB LED, JTAG PTH pins, four (4 40 screw)
US$ 32.99
US$ 70.00
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