IOT desk lamp design

RSL10 QFN EVB is used as the main control of IOT lamps. Because the GPIO of RSL10 is limited, the data protocol adopts single-line return-to-zero code communication method. The system only needs one GPIO1 as the LED RGBW driver. GPIO is used to drive WS2812. WS2812 is a control circuit and An intelligent externally controlled LED light source with integrated light-emitting circuit. Its appearance is the same as a 5050LED lamp bead, and each component is a pixel. The pixel contains an intelligent digital interface data latch signal shaping amplification drive circuit, a high-precision internal oscillator and a 12V high-voltage programmable constant current control section, which effectively ensures that the color of the pixel light is highly consistent. , the other ADC port is used to collect the temperature of the lamp, and when the temperature exceeds the limit standard, it automatically reduces the luminous efficiency of the lamp to avoid burning out the LED due to excessive temperature.

Schematic PCB

Using single-chip microcomputer AT89C51 to transform ordinary double-tub washing machine

Ordinary double-tub washing machines have a large number of users because of their low price and durability. However, as people's pace of life accelerates, there are many inconveniences when using this kind of washing machine to wash clothes: you need to add water before washing clothes, which takes about 2 to 3 minutes. Many friends can't stand the "torture" of time and go about other things. They often forget to turn off the water, causing a lot of waste. When washing clothes, turning the timer can usually wash for up to 15 minutes. Most users don't do this process. He will stay by the washing machine. When the timer ends, he cannot time the time or rinse again in time. Sometimes he even forgets how long he has been washing, which greatly prolongs the washing time. He cannot leave people while rinsing. Someone must be involved in the whole process. Very inconvenient. This article introduces a method of using the AT89C51 microcontroller to transform an ordinary double-tub washing machine. After the transformation, the entire process of water inlet, washing, rinsing, and drainage can be completed automatically. Multiple washing and rinsing methods can be selected, and single washing, single rinsing, and Manual function, very convenient.

Schematic PCB

Fully automatic washing machine program and circuit diagram

Fully automatic washing machine program and circuit diagram

Schematic PCB

Fully automatic washing machine design

This article designs a fully automatic washing machine control system with the AT89C51 microcontroller as the core. This system realizes the control of the entire washing process of the washing machine, including the four stages of user program input, washing, dehydration and end alarm. Laundry control system based on AT89C51 microcontroller, the control panel consists of buttons, indicator lights and LCD display. The buttons select the working mode of the washing machine and the start and pause functions. The indicator lights work with the buttons, and the LCD display shows the working mode of the washing machine. The overall circuit module of the washing machine includes four independent keyboards, indicator lights, motor control and LCD display.

Schematic PCB

GD32E231 incense machine control board

The incense machine control board is based on GD32E231 as the main control, using timers and PWM to control the running time and intensity of the DC pump. The 4-phase 5-wire stepper motor is ideal for lifting and lowering perfume bottle replacement and installation. The display uses the commonly used ST7567 main control 12864 display screen, which can intuitively display the working status of the incense machine.

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TWR-S08DC-PT60: 5V, 8-bit MC9S08P tower system daughter card

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DEMO9S08AC60E: Demo Board for S08AC

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DEMO9S08SE8: SE8 Demonstration Board

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TWR-56F8257: DSC MC56F8257 Motor Control Tower System Module

APMOTOR56F8000: Motor Control Demonstration System

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DSPAUDIOEVM: DSPAUDIOEVM evaluation module

FRDM-KL02Z: Freedom Development Platform for the Kinetis ^® KL02 Family

MC56F8323EVME: Evaluation Kit for MC56F832x and MC56F812x Digital Signal Controllers

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MIMXRT1170-EVK: i.MX RT1170 Evaluation Kit

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Wireless kitchen timer

The principle of the work is mainly to use a three-axis acceleration sensor to collect angle information and convert it into the required timing time. At the same time, it is used to collect motion information as a timer control signal.

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12 V-5 W isolated flyback converter based on VIPer122LS

12 V - 5 W isolated flyback converter based on VIPer122LS

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VIPER122 based 15 V/200 mA step-down converter

15 V/200 mA step-down converter based on VIPER122

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Universal motor driver with speed control based on STM8 and Triac (US version)

Universal motor driver with speed control, based on STM8 and triac (US version)

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Universal motor control evaluation board based on STM8S103F2 MCU and T1235T Triac

Universal motor control evaluation board based on STM8S103F2 MCU and T1235T thyristor

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Compact reference design for battery-operated brushless power tools based on STSPIN32F0252

Compact reference design for battery-operated brushless power tools based on STSPIN32F0252

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