Sensors · BME280In progress
BME280 Temp / Humidity / Pressure
I²C / SPI sensor with ±0.5 °C, ±3 %RH and ±1 hPa accuracy — plugs straight int
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🧲A3144
Sensors
Hall Sensor Module 3144
¥4.80¥6.0020% off for members
Latching Hall switch that pulses once per magnet pass — one magnet is enough for a tachometer. Drives page 33 (pulses per revolution = magnets × 2).
⚠ Before you use it
Signal goes to GPIO41 (GPIO40 is the display reset and must never be used). The output is open-collector and needs a pull-up; pulses per revolution = magnets × 2. Switch-type only — linear Hall sensors cannot be read.
Specifications
| Type | Digital switch output |
|---|---|
| Supply | 3.3–5 V |
| Output | Open collector, needs a pull-up |
| Firmware page | Page 33 · Hall Tachometer |
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