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This Visuino project uses a button on Arduino pin D2 to toggle an electromagnet module on and off. Its logic is debounce → toggle flip-flop → digital multi-source; the module’s signal connects to D3, while D13 controls the Arduino’s onboard LED as an indicator. The tutorial does not identify the module’s model, voltage, current rating, or internal driver, so check its documentation before wiring it.
Parts and connections in the tutorial
The DFRobot Maker Community tutorial, credited to Ron.Cutts and dated October 27, 2024, lists an Arduino UNO (or another Arduino or ESP), a 1 kΩ resistor, a button, an electromagnet module, jumper wires, a breadboard, and Visuino. The module is shown with SIG, VCC, and GND connections, but its make and electrical specifications are not given. Read the DFRobot project tutorial.
The tutorial’s wiring is:
- Connect Arduino D2 to one button contact and to one end of the 1 kΩ resistor. Connect the resistor’s other end to GND.
- Connect the button’s other contact to 5V.
- Connect Arduino D3 to the module’s SIG pin.
- Connect the 5V and GND rails to the module’s VCC and GND pins.
This describes the tutorial’s setup, not verified compatibility for every module with these labels. Confirm that the module accepts the board’s logic signal and that its supply and load requirements match your setup.
The Tool Desk
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- Choose Arduino UNO as the board type in Visuino.
- Add a Debounce Button, a Toggle(T) Flip-Flop, and a Digital Multi Source.
- Connect Arduino D2 to the Debounce Button’s In.
- Connect the Debounce Button’s Out to the Toggle(T) Flip-Flop’s Clock.
- Connect the flip-flop’s Out to the Digital Multi Source’s In.
- Connect Digital Multi Source outputs 0 and 1 to Arduino D3 and D13, respectively.
- Select the correct port, then choose “Compile/Build and Upload.”
In the tutorial’s described result, each button press changes the toggle state: the electromagnet module switches on or off, and the onboard LED indicates the active state. The sequence of components provides button debouncing, toggling, and routing to the two Arduino outputs. Visuino describes its software as a visual programming environment; see its official overview.
#1 Best Overall
- This module mainly contains an electromagnet. A magnet that generates a magnetic field from an electric current.
- It uses the principle of electro-magnetic. With a straight metal wire passing through the current, the space around the wire will produce a circular magnetic field.
- In order to concentrate the magnetic field, the coil inside the electromagnet is wound into a coil, and many lines are arranged side by side, so that all the magnetic fields of the coil pass through the center of the coil, forming a strong magnetic field there, which can make it absorb a 1kg ferromagnetic.
- When using this module, you can control the electromagnet on and off by controlling the High or Low level on its Signal end.
- How to use: search for "keyestudio wiki ks0320" in Google Chrome to get the wiki online tutorial for this product.
Check the module before applying power
The tutorial does not state whether its electromagnet module contains a driver or protection circuitry. Do not assume an unknown bare coil can be powered directly from an Arduino GPIO pin. Arduino’s UNO Rev3 documentation specifies 20 mA as the recommended operating current per I/O pin and says not to exceed 40 mA; these are board specifications, not a rating for the electromagnet. Check the Arduino UNO Rev3 documentation.
Before connecting the module, check its own documentation for:
Rank #2
- [OVERCURRENT ] With Solenoid Valve Control Module, The maximum output current limit can be set to provide over current , and the limit can be set between 0.1?15A
- [OPTOCOUPLER ISOLATION DRIVE] With LED power indicator, Solenoid Valve Control Module adopts 10MHZ ultra bandwidth optical coupling isolation drive, support 3.3V 5V 24V NPN or PNP level input control, drive current ?Y5MA
- [MULTIPLE USAGE] Solenoid Valve Control Module is suitable for driving electromagnets, solenoid valves and other electromagnetic moving devices
- [HIGH SPEED RESPONSE] Solenoid Valve Control Module has high speed response time, input and output delay is less than 20ms
- [ADJUSTABLE PARAMETERS] With 3mm / 0.12in mounting hole diameter, Output full load start time is 0?2s adjustable, output FRQ frequency is 2?20KHZ adjustable, output drive maintains working current PWM duty cycle adjustable
- Rated supply voltage and coil current.
- Whether it includes a driver, and how its SIG input is intended to be controlled.
- Protection circuitry and any wiring or power-supply requirements.
- Compatibility with the Arduino board’s signal voltage and available supply.
If the item is a bare coil rather than a documented driver-equipped module, use a suitable driver and protection arrangement specified for that coil; do not infer a circuit from the tutorial’s three-pin module wiring.
Quick Recap
Rank #4
- Build a 37-Module Sensor Lab: Add motion, distance, light, sound, temperature, touch, display and control functions to compatible UNO, MEGA, Nano, ESP-32 or STM32 projects for prototyping, classroom experiments and maker builds
- Explore Input Sensors and Motion: Experiment with GY-521 motion sensing, PIR detection, ultrasonic ranging, temperature and humidity, DS18B20, flame, Hall, touch, light, sound, tilt, tracking and obstacle-avoidance modules
- Add Displays, Timing and Control: Use the LCD1602, DS1307 real-time clock, joystick, rotary encoder, relay, buzzers, RGB LEDs and infrared modules to build clocks, alarms, counters, status displays and automated projects
- Follow Guided Projects Materials: Use digital tutorial materials, datasheets, wiring diagrams and example code for compatible UNO R3, MEGA 2560 and Nano boards, then adjust thresholds, timing and logic to create custom experiments
- Module-Only Expansion Kit: Controller board, USB cable, breadboard and jumper wires are not included; use 6.5–9 V DC only with the included power module, verify pin requirements before wiring and keep the laser emitter away from eyes
Rank #3
- Product Diameter:18.5 mm with 3mm Screw hole
- Lacquer cable diameter:about 0.35mm
- Pack of 3pcs
- Magnetic copper wire is widely used in the construction of transformers,motors,solenoids,speakers,electromagnets,and other applications that require tight coils of insulated wire.
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