【Training Camp】Little Jianzhong DIY

Using Chuanzhi Education's open source project on the Lichuang open source hardware platform as a template, we improved the hardware circuit of the bionic mechanical dog to obtain the hardware circuit required for this small clock. Because the little clock does not need to be mobile like a bionic mechanical dog, the power source can be either a battery or a charger. In this solution, the power adapter power supply solution is used to provide a more stable power supply to the PCB board, so that the servo of the small bell has a good source of power while ensuring the reliability of its work (innovation point).
Since it was the first time to make a DC-DC power supply, in order to ensure that there were no mistakes, basically every component was based on the reference components given in the data sheet. At the same time, the PCB layout was also strictly in accordance with the data sheet. In the end, the solution was successful. But in the end, the price in terms of circuits was already 20 yuan. However, this design was sponsored by Lichuang EDA, and I only paid for the postage. I would like to thank the sponsor dad for allowing me to enter the electronic world! ! Thumbs up for Lichuang!
 
After the hardware circuit was completed, through the study of HI-3861, lighting, buzzer driving, PWM driving motor, and OLED display were realized on the designed PCB board. However, I was not able to write the final firmware myself, which can only be used for small clocks. It is a pity that my personal ability is not enough! But at the same time, I am looking forward to the works of the big guys in the group.
 
Finally, please note that the demo video does not have