NE555 dimming speed

Introduction: Simple NE555 duty cycle dimming, changing the R1 R2 C1 potentiometer resistance can change the frequency.

Schematic PCB

555DC dimming

Introduction: The dimmers on the market have a certain stroboscopic phenomenon and are very uncomfortable to adjust, so I made a high-power DC dimmer.

Schematic PCB

【Course Design】Touch Sensor

Introduction: Make a delay-off switch to transform the desk lamp. When the lights are turned off at night in school life, turn on the delay-off switch of the desk lamp. When you climb up the ladder and go to bed, the desk lamp will automatically turn off.

Schematic PCB

Guitar water lamp

Introduction: Hebei University Science and Technology Innovation Association, EDA training first course introduction: I participated in the club’s activities for the first time and made a pure circuit-implemented LED running light, which is quite good-looking.

Schematic PCB

[Training Camp] Internet of Things Clock + Liu Quan

Introduction: IoT Clock

Schematic PCB

Sawtooth wave generation circuit based on NE555 ver 0.01

Introduction: Simple NE555 sawtooth wave generator

Schematic PCB

NE555 eight-note electronic keyboard_V1.0

Introduction: NE555-Piano_V1.0

Schematic PCB

SMT practice PCB business card and tool card

Introduction: The front is a SMD practice board, which contains 120 original components and 264 solder points. It can be practiced up to 3 times. The manual SMD technology has advanced by leaps and bounds. The back is a tool card, including a toolbar, and the silk screen in the middle can be changed to your own LOGO. The PCB size is 9*7.2mm, which is very convenient to carry.

Schematic PCB

[Hebei University of Science and Technology "Muxing Lake Cup" Science and Technology Competition] Simple RLC test bridge

Introduction: This design is a device that can measure the size of capacitance and resistance, and can measure the voltage value of the resistance to be measured through ADC, and automatically select the range.

Schematic PCB

Improved version of 555PWM module with adjustable duty cycle frequency

Introduction: Improved version of 555PWM module with adjustable duty cycle frequency

Schematic PCB

[Creative PCB] Qingguo Mid-Autumn Festival

Introduction: Welcome the Mid-Autumn Festival and celebrate the National Day water lanterns

Schematic PCB

[Successful test] PWM dimmer

Introduction: PWM dimming module based on NE555

Schematic PCB

Lucky wheel based on NE555 and CD4017

Introduction:.

Schematic PCB

【Creative PCB】Lucky Roulette

Introduction: A wheel of fortune

Schematic PCB

NE555 time control

Introduction: NE555 spot welding machine time controller

Schematic PCB

Electric vehicle flasher

Introduction: Simple Flasher Circuit

Schematic PCB

[Tianjin University of Technology] Differential amplifier circuit tester + Zhang Hao

Introduction: Differential amplifier circuit tester, using triode 9013 to build a differential amplifier circuit and analyze its circuit characteristics.

Schematic PCB

Digital circuit production 05-555 dual tone alarm circuit

Introduction: Different frequencies can emit different sounds. Based on this feature, we can make a small circuit that can emit a variety of different sounds. This circuit uses two NE555 chips to generate an alarm circuit similar to the sound of police cars, ambulances, and ambulance lights.

Schematic PCB

Digital circuit production 09-NE555 eight-tone electronic keyboard

Introduction: This circuit cleverly uses a combination of eight buttons and resistors to play eight simple scales. You can play some simple songs at will, it is powered by USB, the circuit is simple and has a certain degree of fun.

Schematic PCB

Digital Circuit Production 08-Logic Pen Experiment

Introduction: This circuit uses an op amp and a NAND gate as the core to design a simple logic pen circuit, which can measure a high and low level state of an external circuit and is suitable for distinguishing power supply potential without a multimeter.

Schematic PCB