Summary of OPERATED WASHING MACHINE CONTROL CIRCUIT WITH ATMEGA32
This article describes a professional washing machine control circuit designed using an ATmega32 microcontroller. The system manages motor speed via triac phase-angle control and tachogenerator feedback, while relays and triacs handle rotation direction, water pumps, valves, and heating elements. The design ensures safety by isolating low-voltage logic from 230V mains using transformers and opto-isolators (MOC3043, MOC3023). It features a 20-character LCD display, LED indicators, and full remote operation via an IR receiver to avoid physical contact during cycles.
Parts used in the ATmega32 Washing Machine Control Circuit:
- ATmega32 Microcontroller
- MOC3043 Opto-triac (Zero Crossing)
- MOC3023 Opto-triac (Instantaneous Response)
- Triac (Motor Voltage Control)
- Relay (230V – 10A for Heater)
- Transformer (230V – 2X6V)
- LCD Display (20 characters)
- LED Indicators
- IR Remote Control Receiver
- Tachogenerator
- Resistive Temperature Sensor
- Pump Valves
ATmega32 microcontroller based on the project is already quite interesting and a professional I see this type of advanced projects ATMEL series Some sections of the circuit MOC3043 opto diac, MOC3023 isolated with LCD… Electronics Projects, Operated Washing Machine Control Circuit with ATmega32 “avr project, microcontroller projects, “
ATmega32 microcontroller based on the project is already quite interesting and a professional I see this type of advanced projects ATMEL series
Some sections of the circuit MOC3043 opto diac, MOC3023 isolated with LCD and LED indicator control (presumably rc5) control and has a lot more features
WASHING MACHINE CIRCUIT
The rotational speed of the motor is controlled by the microcontroller. Its supply voltage 230V is cut by a triac controlled by the ATmega. Indeed, directly powered by 230V motor rotates the spin speed. It should therefore be slow for washing. But the speed control is rendered necessary because the torque varies alot during each revolution of the drum of the distribution and movement of the laundry in the drum. Hence the presence of the tachogenerator of the motor shaft. the ATmega continuously measures the actual speed of the drum (by a function programmed frequency) and compares it with a setpoint. The result is used to adjust the angle of the triac to maintain constant speed (speed control). This is one of the finer points of the program.
The direction of rotation of the motor is selected by switching the connection of the stator relative to the rotor by two relays. The pump and valves are controlled by triacs. The heater is controlled by a relay 230V – 10A.
The microcontroller circuits and low voltage (5V) are isolated from the 230V mains:
feeding a transformer 230V – 2X6V
triacs by opto-triacs detecting zero crossing MOC3043.
cutting the triac motor voltage by an opto-triac NO detecting zero crossing MOC3023 (instantaneous response)
Everything is managed remotely by a remote control for TV! (it avoids touching anything during operation of the machine)
SOME FEATURES OF THE CONTROL BOARD;
1) Check-out: Engine speed control on-off control drain pump water inlet temperature control to 20 characters (blue) LCD. Some LEDs in all colors
2) Input: rev counter with resistive temperature sensor reference signal phase 50Hz sector. Buttons, buttons, IR remote control receiver
Source: https://320volt.com/en/atmega32-ile-kumandali-camasir-makinasi-kontrol-karti/ alternative link: operated-washing-machine-control-circuit-with-atmega32.rar alternative link2
- How is the motor rotational speed controlled?
The microcontroller measures actual speed via a tachogenerator, compares it with a setpoint, and adjusts the triac angle to maintain constant speed. - What components are used to isolate the low voltage circuits from the 230V mains?
A transformer feeding 2X6V, MOC3043 opto-triacs, and MOC3023 opto-triacs are used for isolation. - How does the system change the direction of motor rotation?
The direction is selected by switching the stator connection relative to the rotor using two relays. - Which component controls the heater in this circuit?
A 230V – 10A relay is used to control the heater. - Can the washing machine be operated without touching it?
Yes, the entire system is managed remotely using a TV remote control via an IR receiver. - Why is speed control necessary for the washing machine drum?
Speed control is needed because torque varies significantly during each revolution due to laundry movement. - What type of display is used to show information on the control board?
A 20-character blue LCD display is used along with multi-colored LEDs. - How is the pump and water valves controlled?
The pump and valves are controlled using triacs.
