Capacitive touch button driver module MPR121, I2C
Code: LA132012
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Product detailed description
Capacitive touch button driver module MPR121, I2C
MPR121 is a capacitive touch sensor driver communicating via I2Cinterface. It can control up to twelve individual electrodes, as well as a simulated thirteenth electrode that can be used to measure the distance of approach to the sensor on individual channels. The MPR121 is also equipped with eight LED drivers. If these pins are not configured as capacitive sensor electrodes, they can be used to drive LEDs.
Specifications:
- Supply voltage: 2.5-3.6V
- Number of capacitive channels: 12
- Number of LED channels: 8
- I 2 C address: 0x5A
- Dimensions: 20.5x31mm
Included in delivery:
- 1pc Capacitive touch button driver module MPR121, I2C
Remark:
- This product is not a standalone functional unit and may require professional installation.
- Product images are for illustration purposes only and may sometimes differ from the actual appearance of the item. However, this does not change its basic properties.
Additional parameters
| Category: | Controls |
|---|---|
| Warranty: | 2 years |
| Weight: | 0.004 kg |
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Jaroslav Solař
Jaroslav Solař
Chvíli jsem bojoval s adresami I2C, bo to ESP32 pro HomeAssistant nějak nechápal (nenašel ani jednu adresu, potřebuji 20 tlačítek), ale po zapojení přes I2C multiplexer to jede na první dobrou i bez nastavení adres. Trochu jsem doufal, že bude reagovat na dotyk i přes 6mm plexisklo, ale zatím se mi nedaří, takže spodní hrana plexi tlačítka má nalepenou hliníkovou pásku, aby prst šel "na kov". Je to divné, protože při nastavení max. citlivost to reaguje na letící mouchu na chodbě, ale prsty nee :-)
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