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connect the bell through a relay or timer circuit that interrupts power at your desired pulse frequency
Bluetooth operation uses 30-100 mA
typically 40-80mA depending on brightness level
and autonomous systems design
SOM-RK3399 74LS12 NAND Gate IC (Pack of 5) connect the bell through aSOM RK3399 The SOM RK3399 is a high performance System on Module based on the Rockchip RK3399 dual core ARM processor, designed for embedded computing and IoT applications requiring robust processing power. Embedded systems engineers, IoT developers, and industrial automation specialists use this module to build edge computing solutions, robotics controllers, and multimedia processing systems. It solves the challenge of integrating complex ARM based
