I want to be a good electronic enthusiast, play various DIY works, how can I not design one or two switches! A good switch is designed to play an unspeakable role in the entire electronic work. The switch design of this collection mainly includes remote intelligent switches and various types of sensor switches, suitable for most enthusiasts to play.
1, WiFi monitoring switch - intelligent switch
Select HLW8032 for the electric energy chip. It can measure active power, depending on power, current, and voltage effective value; "power-energy pulse PF pin output;
In the dynamic range of 1000: 1, the measurement error of the active power reaches 0.2%; within 1000: 1 dynamic range, the measurement error of the effective current reaches 0.5%;
In the dynamic range of 1000: 1, the measurement error of the effective voltage reaches 0.5%; the built-in frequency oscillator; the built-in voltage reference source; the built-in power monitoring circuit;
UART communication method.
https://www.cirmall.com/circuit/14414
2, single key switch circuit design one-button switch machine (PCB / schematic project file)
Ultra-small volume design. Supports up to 6V voltage. The current determines the current size based on the MOS tube used. Onboard with size MOS compatible packaging design, the line window is opened to improve current and module stability. The module is very convenient, and the positive and negative poles of the arrow and the interface can be used to power the power supply and the power supply, click the button to implement the power of the device and the power outage.
https://www.cirmall.com/circuit/7845
3, intelligent offline voice switch circuit solution
Intelligent switch is a switch that is currently popular in the market. At present, there are common WiFi intelligent switches, ZigBee intelligent switches have been Bluetooth intelligent switches. This intelligent switch is used by offline voice control. The smart voice recognition uses the chip to be deeply learning voice chip, using single-chip MCU + storage priority design NPU, using deep learning Ai, realizes a single-core speech recognition solution, realizing simple offline speech recognition function ...
https://www.cirmall.com/circuit/14817
4, based on Raspberry Pi to create intelligent switch
Using Nova Hologram, IoT Relay, and Raspberry Pi, you can easily create remote intelligent switches so that you can open your intelligent switches anytime, anywhere.
The Internet modem sometimes stops working, so you must unplug it 10 seconds and then re-insert it. But because we have to go to vacation and must access our computers from the hotel, we need to internet, so I use my idle Raspberry Pi, I got a Nova Hologram and IoT Relay, I put a remote on / off for the modem. .
https://www.cirmall.com/circuit/10024
5, catch the wave smart home boom, small white WiFi switch, with super detailed tutorial
Smart home is now in the popular period, as an entry-level enthusiast, which does not hurry this boom, so use some of the ESP-WROOM-02 WiFi module DIY, DIY, with a WiFi switch, attached to my detailed production process, feel Try you interested. The tutorial is divided into five steps, according to the tutorial step by step, there is no problem.
http://www.cirmall.com/circuit/7313/details
6, ultra low power non-contact gesture switch (full design)
This design uses the high-performance, low-cost, low-power 32-bit processing chip STM32F103RCT6 based on the ARM Corporation Cortex-M3 core, which combines the APDS-9960 environmental brightness optical sensor to achieve accurate identification of human dynamic gestures. Taking into account the device power consumption problem, the processor's standby mode is used, and the ultra-low power consumption of the overall design of the system is achieved by low-power micro human sensing PIR module, and the ultra-low power consumption of the system is realized, and the product's battery life is improved.
http://www.cirmall.com/circuit/7356/details
7, DIY production, fingerprint recognition switch control board schematic + PCB source file + program firmware
The fingerprints use Sweden's FPC1011, which is the kind of public security bureau, and the bank is used, very expensive. The master is N32901 or N32903 of the New Tang. Many people want to ask, what about your fingerprint recognition? I can only say that I get the form of library function, I have no ability to complete the identification algorithm. As for the algorithm, I only see the foreign big cattle open source on GitHub. I just tested the lower PC side, the embedded end has not been used, it is important to do it, very laborious. I only made an identification of the QT interface, I was put on my github.
http://www.cirmall.com/circuit/4063/details
8, smartphone Bluetooth control home appliance switch design
This paper uses the 51 single-chip basic knowledge combined with automatic control technology and Bluetooth 2.0 communication technology to complete a set of wireless remote control home appliances. The entire system is based on the STC89C52 single-chip microcomputer. The microcontroller implements the resolution of the HC-05 Bluetooth directive and the release of the relay switch control command. In order to make the system design, the operation demonstration is convenient, the home appliance portion uses four LED lights to simulate the replacement, through the LED lamp connected to the relay switch to simulate the open and off of the controlled appliance, the system LCD12864 LCD display 4 The opening and closing state of the home appliance switch.
http://www.cirmall.com/circuit/4062/details
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9. (top) intelligent sound and optical control switch based on human infrared induction and sound induction of single chip microcomputer
Module:
Human infrared sensor: Arduino HC-SR501 body infrared induction module (also known heat release)
Sound sensor module sound detection module microphone module sound control whistle switch
2-way optocoupler secondary module
When the organism is detected, the relay 1 is turned on when the sound is detected (such as a footsteps). Relay 1, 2 connects the electrical appliance you want to control (eg lighting, alarm light)
http://www.cirmall.com/circuit/3266/details
10, plug-in power switch design (schematic + PCB source file + program, etc.)
This product is slightly different from the insertion card used by the market, only identifying the registered ID card, not any cards can be used, and there is a timing to take power, you can set different cards to take different times. Of course, you can continue to take charge.
This product requires a parent card as a registration card. When the new card is registered, insert the mother card, the signal prompt can be registered, pull out the mother card insert other cards, read success, there will be signal prompts, and finally inserted into the mother The card end registration, the registered card will get the right to take electricity. If you need to cancel a card, the order is equal.
There is a reset button on the back of the circuit board (generally not welded), which can be emptied, including a parent card, and insert the card after reset, the card will be defined as a parent card.
http://www.cirmall.com/circuit/4514/details
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