ESP32 clock

Introduction: Round Desk Clock

Schematic PCB

emmc to SD card

Introduction: emmc to SD card

Schematic PCB

【CW32】Brushless ESC driver board based on CW32 microcontroller

Introduction: A brushless DC motor driver board based on the CW32F030C8T6 microcontroller. Both the upper and lower bridges use NMOS. The MCU main control has made a separate minimum system board to facilitate other uses in the future. Supports sensitive Hall and non-inductive square wave control.

Schematic PCB

【RA】Gas alarm based on Renesas MCU

Introduction: Gas alarm based on Renesas R7FA2E1A72DFL microcontroller

Schematic PCB

DIY zigbee2mqtt zigbee3.0 gateway

Introduction: Based on CC2652P/E72-2G4M20S1E zigbee3.0 Raspberry Pi adapter board

Schematic PCB

USB docking station USB hub small USBHub

Introduction: USB docking station USB hub small USBHub

Schematic PCB

Genshin Impact/Yomiya/Kuki Ninja/Kitagawa Uimome School Card/Water Card/Access Card

Introduction: Just like the title, the title is so long so that it can be searched by more people. I made the school card by myself. I wanted to add lights but I couldn’t. It was basically copying homework.

Schematic PCB

[Verified] Remote boot card ESP8266 pci+pcie V2

Introduction: pci and pcie dual interface remote boot

Schematic PCB

CS1237 Inflatable Air Pump ESP32 Control Board [Verified]

Introduction: The main body of the air pump is 20 yuan on Taobao. The sensor is DSH700 and the digital-to-analog module is CS1237. The air pressure value is read through esp32 for inflation control.

Schematic PCB

T25 ultrasonic generator

Introduction: T25 ultrasonic generator

Schematic PCB

[Unverified] 2-channel 24-bit differential ADC module-CS1238

Introduction: CS1238, 2-channel ADC

Schematic PCB

【Training Camp】“HiSilicon Flow Horse”

Introduction: Bionic machine developed based on OpenHarmony open source Hongmeng operating system

Schematic PCB

[Training Camp] "HiSilicon Liuma" driver board simplified version

Introduction: After adding typeC, simplifying the circuit and adjusting the layout, the power bank on hand can be used for power supply. However, it is best for the power bank to support more than 3A because the load is multiple servos. In actual testing, the power supply was found to be unstable. WIFI is old, it is best to increase the capacitors on 5V and 3.3V.

Schematic PCB

17th Smart Car_Wireless Charging Group

Introduction: I have been preparing for the competition for two years. There was a little accident during the provincial competition. I sent Kaiyuan my own board for this provincial competition. I hope it can inspire others and help everyone.

Schematic PCB

USB controller based on development board 32U4-MU

Introduction: An Xbox360 controller is made using the mciro pro development board, which is the 32U4-MU development board. Using a USB link, it can be used to DIY win10 handheld consoles. There is no problem with personal verification.

Schematic PCB

The second version of the USB controller based on the 32U4-MU development board

Introduction: However, the development board used this time is a Derk Robot board based on 32U4-MU. Compared with pro mciro's 32U4 development board, the number of interfaces is larger, allowing each key of the handle to use an independent IO interface

Schematic PCB

The simplest ESP8266 burning rack

Introduction: The simplest ESP8266 programming socket, suitable for novices.

Schematic PCB

Amateur Radio VHF/UHF CJU Directional Antenna

Introduction: Directional antenna PBC frame suitable for amateur radio VHF/UHF frequency bands

Schematic PCB

Shortwave Antenna 1:1 Balun

Introduction: 1:1 balun used in amateur radio shortwave antennas

Schematic PCB

2.13-inch ink screen clock No. 7 battery box

Introduction: To make up for the shortcomings of CR2450 such as low capacity, design a PCB version of the No. 7 battery box

Schematic PCB