[Changshu University of Science and Technology] Touch adjustable lighting design (pure hard)

Introduction: It mainly uses the multi-harmonic sine oscillation circuit of NE555 that can send out stable and regular signals as the signal benchmark to send signal pulses to the counting circuit. The mechanical language of the counter is converted into binary numbers, which are displayed by LED lights.

Schematic PCB

Disconnection alarm

Introduction: This is a wire break alarm. When the switch is pressed, the buzzer sounds when the circuit is disconnected.

Schematic PCB

Guitar water lamp

Introduction: Hebei University Science and Technology Innovation Association, the first EDA training course

Schematic PCB

NE555—Electronic speed regulator

Introduction: PWM wave is generated through ne555 to drive mos, thereby driving the motor. You can also use this electronic speed regulator to adjust the LED brightness, the speed of the DC motor, and make an inverter.

Schematic PCB

The humidity and temperature sensor nodes of the star network achieve a service life of button batteries of more than 10 years

This TI design uses Texas Instruments' nanopower system timers, SimpleLink™ ultra-low power wireless microcontroller (MCU) platform, and humidity sensing technology to demonstrate an ultra-low power approach to driving a sensor end node. These technologies enable extremely long battery life: more than 10 years on a standard CR2032 lithium-ion coin cell battery. This TI Design includes system design techniques, detailed test results, and information to get your design started and up to speed.

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CN0290

Extending the low-frequency range of high-performance phase-locked loops

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CN0294

Increase the number of clock source outputs using low-jitter LVPECL fanout buffers

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CN0311

Wideband low error vector magnitude (EVM) direct conversion transmitter using LO divide-by-2 modulator

Schematic PCB