NFC business card 4 in 1 NfcCard-4in1

Introduction: 4-in-1 NFC business card, low cost, high practicality, ultra-thin size less than 1.6mm. Use the COB encapsulated NFC chip, use the toggle switch to select the card, and freely program access control cards, mobile phone business cards, WIFI network distribution, web links and other functions.

Schematic PCB

ST25DV solution verification board

Introduction: A verification version of the st25 solution based on st’s official “ANT7-T-ST25DV04K” evaluation board. Passed program verification and can be used

Schematic PCB

ESP32 C3 circuit breaker relay

Introduction: ESP32 C3 on-off module, relay control

Schematic PCB

Love Tomb Style No. 2 - USB Docking Station in the VL822 Atmosphere

Introduction: Super-speed USB docking station based on VL822

Schematic PCB

A1 - USB3.0 Super Speed ​​Docking Station in VL812 Atmosphere

Introduction: The third USB3 docking station on the VL812-based USB3.0 5Gbps high-speed docking station platform

Schematic PCB

GIK87 gaming keyboard_G613 main control_monochrome backlight

Introduction: GIK87 keyboard adopts Logitech G613 main control, male model 87 shell, monochrome backlight, and hot-swappable axis. Equipped with volume knob, dimmer knob, and button switch. The original intention of this keyboard is to use Logitech's LightSpeed ​​strongest wireless technology to create a wireless gaming keyboard without lag.

Schematic PCB

G613 keyboard modification-with GcoreV3

Introduction: Main schematic diagram and PCB of the keyboard with GcoreV3 main control adapter board. It's very easy to create the wireless keyboard you want. Adopt G613 main control.

Schematic PCB

Omron shaft adapter Cherry MX shaft

Introduction: Omron shaft changed to MX cherry shaft - small adapter board

Schematic PCB

ChameleonMini

Introduction: ChameleonMini is based on a piece of hardware for multi-band and multi-type RFID simulation designed by a German university when studying RFID security. Realize functions such as M1 card simulation and key sniffing.

Schematic PCB

ESP32_CAN_STICK

Introduction: CANUSB transceiver implemented based on ESP32S2, the software is compatible with ZLG WIFICAN transceiver protocol. Source code and host computer: https://note.youdao.com/s/D0wWeRdR

Schematic PCB

DIY_2.4G_Yagi antenna

Introduction: The antenna parameters are from the Texas Instruments website. For details, check: https://www.ti.com.cn/cn/lit/an/swra350/swra350.pdf?ts=1651263534722

Schematic PCB

[Open Source] STM32 four-axis remote control

Introduction: A four-axis remote control based on the open source four-axis version of RoboFly.

Schematic PCB

[Open Source] STM32 quadcopter-old version

Introduction: A quadcopter made with reference to Xiaoma Ge’s RoboFly open source quadcopter

Schematic PCB

NFC Bingdundun Xuerongrong

Introduction: NFC Bingdundun & Xuerongrong card is small and mini, using CUID scheme, which can realize functions such as access card simulation and electronic text tags.

Schematic PCB

BingdundunNFC

Introduction: Xiaopo Station: https://www.bilibili.com/video/BV1Yq4y1t7Sc/

Schematic PCB

Remote

Introduction: This remote control is adapted to the four-axis UAV Perfei_Fly project

Schematic PCB

Power line finder

Introduction: Sometimes, when you need to find the wires in the wall, you can't see or touch them, and you scratch your head. Try this?

Schematic PCB

Use lora to herd cattle node part v4

Introduction: Use Lora to herd the cattle node part, collect GPS data and send it to the base station 10 kilometers away through Lora.

Schematic PCB

Loli third generation remote control-Loli mini

Introduction: An ultra-small remote control based on Loli open source, only the size of a lighter, including two pairs of rockers, 3 sliding channels, 5 switch channels, additional voltage display, TypeC charging, TypeC PPM input and output, rocker selection Switch game console joystick, feels good in hand.

Schematic PCB

[Solicitation Order] Smart Car

Introduction: Smart car, ultrasonic obstacle avoidance, Essence 2.4G module remote control

Schematic PCB