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Soil Moisture-Based Irrigation System
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the Raspberry Pi 2/B+/A+
The Mega2560 R3 board features a 1
MPR121 - 12 Channel Capacitive Touch Sensor Controller Module - I2C Interface Relays Soil Moisture-Based Irrigation SystemMPR121 12 Channel Capacitive Touch Sensor Controller Module I2C Interface The MPR121 12 Channel Capacitive Touch Sensor Controller Module is a capacitive touch sensor controller driven by an I2C interface. The chip can control up to twelve individual electrodes, as well as a simulated thirteenth electrode. This is a breakout board for NXP Freescales MPR121QR2. The MPR121 also features eight LED driving pins. When these pins are not configured as
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