ESP8266 black water screen driver board

Introduction: ESP8266. Ink screen driver board. Full size supported. Two and three colors.

Schematic PCB

Nanjing subway map nfc card

Introduction: This project mainly provides Nanjing subway map that can be modified (Nanjing subway in 2022). The card is not original. The original author of the card: mazhiliang

Schematic PCB

Challenge the smallest OLED wifi killer on the entire network

Introduction: A portable wifi killer the size of a USB flash drive, with automatic download circuit

Schematic PCB

K100Pro shell-k375s-pcb

Introduction: Youlian 96 keyboard with printscreen buttons

Schematic PCB

BGA291 integrated solid particle to CF Express

Introduction: Use Xianyu’s cheap M2 all-in-one disk to DIY your own CF Express card, and don’t pay IQ tax for the sky-high price M.2 adapter board

Schematic PCB

Wireless LED Control

Introduction: It is planned to make a modular LED display system with high flexibility and controllable cost, which can be used for marriage proposals, surprises, etc., to achieve the variable and controllable graphical display required in marriage proposals, and to reflect the appeal of electronic enthusiasts. Their self-cultivation will contribute to improving the favorability of electronic enthusiasts in the hearts of the opposite sex.

Schematic PCB

LOLI 6-channel mini receiver

Introduction: Small size can be put into a 1:64 model car.

Schematic PCB

elrs-nano

Introduction: ExpressLRS-2.4G uses two modules, E28-2G4M27S and ESP32-WROOM-32, and the PCB integrates a DCDC power supply based on MT2492.

Schematic PCB

PCB WIFI directional antenna

Introduction: I saw that the WIFI signal directional antenna made by the fighting nation using copper plates works well, but the price of copper plates is relatively high, and it also requires cutting accuracy. The PCB copper foil is also copper, and the size is more accurate. Try to use PCB to make one

Schematic PCB

low_if_fm

Introduction: fm radio

Schematic PCB

Paint caliper

Introduction: Contains 3 different types of calipers, which can also be modified freely.

Schematic PCB

Wired mouse keyboard to wireless mouse keyboard

Introduction: https://www.bilibili.com/video/BV1mi4y1d7qf?spm_id_from=333.999.0.0 Implement USBHID to serial port function

Schematic PCB

[Analog circuit] RDA5807 FM radio design

Introduction: FM radio production based on RDA5807 transceiver chip

Schematic PCB

Wireless voice RGB light strip control panel

Introduction: Directly use the voice control protocol and 2.4G wireless module to remotely control the RGB light strip. The cost of the control board is less than 10 yuan, the cost of the voice control board is less than 15 yuan, and the Taobao public model of the shell is 1.5 yuan.

Schematic PCB

7-way remote control relay module

Introduction: Use two 315MHz remote controls to control this relay module. It can be used in various scenarios that require simultaneous control of two channels. The power supply is 8-30v.

Schematic PCB

Low-cost Bluetooth code scanning payment module

Introduction: Use the Bluetooth scan code payment module of Pay Now, which is used in: scan code payment socket, washing machine scan code payment, various amusement vehicles scan code payment, various engineering vehicles scan code payment, mahjong machine scan code payment, air purifier Scan the QR code to pay, scan the QR code to pay for massage chairs, etc.

Schematic PCB

The Great Wave off Kanagawa

Introduction: The Great Wave off Kanagawa

Schematic PCB

Cai Bingdundun

Introduction: The super cute Bing Dundun can be used as a school card~

Schematic PCB

NFC_Card

Introduction: An NFC card with a more beautiful and smooth appearance

Schematic PCB

1420MHz PCB Yagi Antenna-New

Introduction: The board material is RF4, the interface is SMA, the gain is 8dBi, the bandwidth is 60MHz, and it is a 4-unit PCB Yagi antenna resonating at 1420MHz.

Schematic PCB