555 chip speed regulation

Introduction: 555 chip makes dimming and speed control, classic PWM. I originally wanted to use a ready-made one, but I made one that my brothers made public, but it didn’t work, so I had to draw it myself.

Schematic PCB

drsstc/sstc fixed frequency/music optical fiber arc extinguishing

Introduction: Arc extinguisher for Tesla coil

Schematic PCB

[Power bank low current anti-power-off plug-in]

Introduction: It is a power bank plug-in designed to prevent the power bank from automatically cutting off power when supplying power at low current (mostly <50mA). In this way, the power bank can be completely drained. . .

Schematic PCB

Effector analog switch bypass

Introduction: 555 controls the CH443K analog switch, used for signal switching of guitar effect pedals

Schematic PCB

BD-2 RealPass

Introduction: Boss BluesDriver-2 electric guitar overdrive effector true bypass version

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AB-BOX

Introduction: Guitar effects chain switcher

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Lucky wheel lottery DIY production electronic 555 production

Introduction: The Lucky Wheel is a tool that predicts where the rotating disk will stop when it stops. It can also be used as a number estimation game, electronic dice, lottery machine, etc.

Xue Qiankun-202110512046-Electromechanical

Introduction: Panzhihua University Electronics Association EDA trains outstanding students on open source projects

Schematic PCB

NE555

Introduction: 555 dynamic load machine

Schematic PCB

Running water lamp_NE555_CD4017

Introduction: Flowing Water Lamp~

Schematic PCB

Fully discrete NE555

Introduction: The fully discrete NE555 is made with reference to the datasheet of the earliest version of NE555, and is connected with solder tabs; the pin layout is optimized, putting 2 and 6 pins together, and 7 pins near 2 and 6 pins to facilitate the formation of an astable oscillation circuit.

Schematic PCB

555 flashing

Introduction: 555 flash

Schematic PCB

Webcam car remote control

Introduction: Use old mobile phones and webcams to build a long-range reconnaissance vehicle

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Electronic lottery machine

Introduction: Digital and Electronics Course Design

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Electronic dice

Introduction: Electronic dice composed of NE555 and CD4017

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BGT60 floor

Introduction: Compatible with MCU7

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[Turtle Carrying Barber Shop] Water Lamp Keychain

Introduction: The classic NE555 and CD4017 running water lamp circuit. Adjust the potentiometer to change the running water lamp speed. Use PW5100-50 to boost the 3v CR2032 to 5v.

Schematic PCB

team team project

Introduction: 2022 Electrical and Electronic Works

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Fully discrete_NE555 timer

Introduction: 555 timer built using 3904 and 3906

Schematic PCB

Encryption switch decoding signal

Introduction: This version is the decryption circuit required by the "Encryption Switch" open source project and needs to be used in conjunction with the "Encryption Switch"

Schematic PCB