Arduino modular multi-way solenoid valve controller

some words

• Imported from KICAD, unorganized, use with caution. If you need to pattern making, please use the pattern making file I provided.
• It is mainly used to control the cylinder operation on some ultra-small automation projects. People who engage in automation should be familiar with it.
• You may ask why you don’t use PLC. First, PLC is expensive and you are too lazy to learn it.
• Then some people asked why not use the ready-made time controller and relay combination? It is also expensive, takes up space, and is inconvenient for wiring, setting parameters, maintenance, and stability.
• Developing with Arduino is very fun. It is more than enough to use a timer to control several cylinders to run independently. You can even add an OLED menu.
• The hardware generally adopts a modular design, which facilitates quick maintenance. I have also made several sets of boards for industrial control. They have been used for nearly a year. They are currently very stable and no abnormalities have been found. Only sometimes the DCDC modules are burned due to inferior DCDC modules being sold.
• There is also a 1-way stepper motor version, please consider releasing it if you are interested.
• Usage video display
  • Brand new version (to be recorded, I happened to have a machine to use recently)
  • Old version https://www.bilibili.com/video/BV1Tf4y197VP/
• Some reference videos on cylinder control principles
  • Cylinder automatic cycle reciprocating motion control circuit
  • Two-position five-way solenoid valve controls cylinder movement
  • How to use electricity to control a cylinder? The circuit and gas connection between the solenoid valve and the cylinder

Features

• Can control up to 4 cylinders, connect up to 8 sensors and 2 buttons 
• Provides a sample program for controlling 4 cylinders. Only 2 cylinders are activated and detected by sensors, with error alarm prompts.

hardware

• To use the arduino nano module, you need to flash BL to uno in advance.
• Main control, MOS driver, DCDC, and OLED use modular design
• The sensor input port uses diode isolation and only supports NPN/LOW input.
• Rotary encoder input and button input use resistance-capacitance filtering to enhance anti-interference
• 24VDC power input, reserved terminal block for controlling the power switch
• tvs anti-surge of DCDC module
• Spring-type screw-free terminal blocks save time and effort
• The DCDC step-down module can be adjusted to 6.5V for use. It will step down twice through the LDO of the nano module and be used by peripheral 5V modules.

software

• Chinese menu interface
• OLED main interface monitors input and output status, manual/automatic switching operation
• Setting menu, cylinder running time setting, screen rest time setting, screen brightness, sensor on/off, reset