Lazy self-care fish tank control system

The lazy self-care fish tank control system is mainly aimed at fish farming enthusiasts. As long as you use your mobile phone through BLE, you can manually control the start, stop, and feeding of the fish tank's electrical appliances. At the same time, the real-time time, supplementary lighting time, automatic feeding time, water temperature monitoring and alarm, etc. can be set through the APP at once. Enthusiasts are only responsible for watching and appreciating the fish, and the other things are left to the control system!

Schematic PCB

Running posture training shoes

This design is designed for foot posture. Wrong running posture can be corrected through real-time prompts on the mobile phone APP, thereby solving various adverse consequences caused by incorrect running posture.

Schematic PCB

short-term weather forecast system

The author is located in an area with a lot of convective weather and hot and humid weather. I stared at it silently, and saw that the clothes to be dried came in and out five or six times a day... Weather forecast on the mobile app? Weather warning text message? It can only be regarded as a late report. I am lazy, do it myself, have enough food and clothing...

Schematic PCB

Filter circuit (various design solutions + schematic diagram).rar

Filter circuit (various design solutions + schematic diagram)

Schematic PCB

51 microcontroller control example of RTL8019 Ethernet (original program + schematic diagram)

51 microcontroller to RTL8019 Ethernet control example (original program + schematic diagram).

Schematic PCB

UDP test based on STM32 and network chip W5200

UDP test based on STM32 and network chip W5200

Schematic PCB

Network card driver and LWIP protocol transplantation program source code for Ethernet communication module based on LPC2138 and DM9000AE

The network card driver and LWIP protocol transplant program source code for the Ethernet communication module based on LPC2138 and DM9000AE written by myself.

Schematic PCB

Real-time communication via Ethercat protocol, multi-axis position servo driver solution based on STDRIVE101, STH270N8F7-2, and STM32F767ZI

The STEVAL-ETH001V1 servo drive evaluation board has been developed to address three-phase PMSM applications oriented to multi-axial position control and connectivity

Schematic PCB

FRDM-KW38: Freedom development board for KW39/38/37 MCU

Schematic PCB

OM17057: Demonstration board for BGU6104 low noise amplifier, ISM and LTE bands

OM7859: BGA3015 Demonstration Board, 1 GHz 15 dB Gain Broadband Amplifier Application

Schematic PCB

OM7867: BGA3015 Demonstration Board, 40 MHz to 1006 MHz Push-Pull Amplifier Application

Schematic PCB

OM7863: BGA3015 Demonstration Board, 5 MHz to 300 MHz 15 dB Gain Inverse Amplifier Application

Schematic PCB

OM7860: BGA3018 Demonstration Board, 1 GHz 18 dB Gain Broadband Amplifier Application

Schematic PCB

OM7868: BGA3018 Demonstration Board, 40 MHz to 1006 MHz Push-Pull Amplifier Application

Schematic PCB

OM7865: BGA3018 Demonstration Board, 40 MHz to 2600 MHz Broadband Amplifier Application

Schematic PCB

OM7864: BGA3018 Demonstration Board, 5 MHz to 300 MHz 18 dB Gain Inverting Amplifier Application

Schematic PCB

EPR-86 - 6.6W multi-class powered device (PD) for Power over Ethernet (PoE).

Schematic PCB

EPR-68 - 6.6W DC-DC Flyback Converter

Schematic PCB

DI-88 - PoE Detection and Classification (Category 0-3) Interface Circuit

Schematic PCB