[Training Camp] Equipment switch controller based on Tuya WB3S module +896756A

After learning that Lichuang EDA and Tuya Platform jointly launched IoT home interaction, I participated in this event in order to initially master the principles and design technologies of IoT. The Internet of Things is a very new and big concept. The recent policy-guided construction of the agricultural Internet of Things, the construction of the industrial Internet of Things, and this time the Internet of Things in homes that are close to life, all reveal the future development direction of all things. My ideal Internet of Everything is: 1. New smart devices can have a long service life and do not need to be replaced frequently; 2. Existing homes can also be intelligent; 3. Only one terminal is needed to control; 4. Simple operation, no need Users perform complex configurations. I have always hoped to have such a thing to transform my existing non-intelligent equipment - I just need to simply place it next to the existing equipment, whether it is a desk lamp, a rice cooker, a water heater, or a 220V headlight. . So I initially designed this switch device as my entry point into PCB. As long as you cut off any power cord, insert it into the corresponding two "FireWire" ports, and turn on the original switch, you can control the on and off of the device through your mobile phone. Of course, it is just a prototype. I will change the chip to a popular chip, develop a web page or APP to achieve independent control, and transform the 220V equipment into a FireWire power supply. It has been verified by physical verification that this circuit can use Tuya APP to control the on and off of the relay. However, due to certain problems with the thyristor part of the schematic diagram, the voltage stabilizing device burned out. There was a problem during the removal process, and the physical object left behind was not the same. So beautiful. Since I only bought four relays, there were not enough components and it was difficult to remove them to re-solder another board, so I couldn't do a video demonstration.