CH9344 4-channel serial port tool

PDF_CH9344 4-channel serial port tool.zip

Altium_CH9344 4-channel serial port tool.zip

PADS_CH9344 4-channel serial port tool.zip

BOM_CH9344 4-channel serial port tool.xlsx

96752

STM32F407ZGT6 Simplified Core Board

Compatible with STM32F407ZET6, the size has been reduced to the minimum (4-layer board) with no components on the back, and it can be used for surface mount technology.

Compatible with STM32F407ZGT6 and STM32F407ZET6. BOOT mode is not selectable; use the SWCLK and SWDIO ports for downloading. Pin markings are on the back.
 

PDF_STM32F407ZGT6 Minimalist Core Board.zip

Altium_STM32F407ZGT6 Minimalist Core Board.zip

PADS_STM32F407ZGT6 Minimalist Core Board.zip

96754

Cute cat hair light-up IC card access card

[DIY Universal NFC Access Card with Illuminated IC by JLCPCB - Tutorial - Bilibili] https://b23.tv/oBWgDt8

Full reference to the open source plaza: Iron Man Waterdrop Access Card - JLCPCB EDA Open Source Hardware Platform (oshwhub.com)
 
PCB fabrication instructions: The board has no silkscreen printing, it's a regular white board. Stickers need to be applied to the board, then glue is applied .
 
 Materials: 5*8mm chip, 0603 SMD LED, 100Ω SMD resistor, AB resin glue, cat head sticker.
 
1. COB chip: Honghe IoT Technology (stick) - great chip (https://m.tb.cn/h.5mLnZok) 
2. 0603 SMD LED: TENNIO Electronic Components - eight colors
3. SMD resistor: Qisheng Electronic Technology - 100R
 
4. AB resin glue: Beinu flagship store - 100g makes dozens (do not use UV glue, the finished product will have a plastic feel)
 
5. Cat head sticker: Matte PP synthetic self-adhesive sticker (Printer required; PSD files of the images are attached. If you don't have a printer, contact a print shop.)
We don't do color screen printing because we don't want to waste money on such a small thing, and we feel the effect of color screen printing with epoxy coating might not be very good.
 
 
M1 Card: Sector 0 cannot be modified; other sectors can be repeatedly erased and rewritten. The elevator cards and access control cards we use are M1 cards, not copy cards. UID Card: Ordinary copy card; all sectors can be repeatedly erased and rewritten. Mainly used for IC card copying; it will fail when encountering a card reader with a firewall. CUID Card: Erasable and anti-blocking copy card; all sectors can be repeatedly erased and rewritten. Used when UID card copying is ineffective; it can bypass firewalls. FUID Card: Im erasable and anti-blocking copy card; this card's characteristic is that sector 0 can only be written once. After writing once, it becomes an M1 card. Used when CUID copying is ineffective; it can bypass firewalls. UFUID Card: Advanced copy card; can be understood as a combination of UID and FUID. It requires a card sealing operation; without sealing, it's a UID card; after sealing, it becomes an M1 card.
 
 
 

Gerber_Handmade Cat Head_2023-12-17.zip

Image .psd

Finished product.mp4

Altium_Cute Cat Hair Glowing IC Card Access Card.zip

PADS_Cute Cat Hair Glowing IC Card Access Card.zip

BOM_Cute Cat Hair Glowing IC Card Access Control Card.xlsx

96757

Blue Bridge Cup Microcontroller Motherboard IAP15F2K61S2 (One-Click Download Version)

Blue Bridge Cup Microcontroller Competition Development Board (One-Click Download Version). Tested and working.

 
The latest version of the Blue Bridge Cup microcontroller competition development board has been tested and is functional.
 
A picture of the actual product is shown below.
 
 
It has been upgraded to version V2.0 and adds a one-click download circuit. You can choose not to solder this circuit and manually download using the download button.
For details on the one-click download circuit principle, please see: https://blog.csdn.net/Etberzin/article/details/123039239.
 
J3, J5, and J13 can be soldered with either an SS12D00G3 switch or a pin header.
 
The circuit and layout may differ slightly from the official version, but the functionality is the same.
 
 
Two test routines are attached.
 

Ultrasound.rar

Test15.rar

PDF_Blue Bridge Cup Microcontroller Motherboard IAP15F2K61S2 (One-Click Download Version).zip

Altium_Blue Bridge Cup Microcontroller Motherboard IAP15F2K61S2 (One-Click Download Version).zip

PADS_Blue Bridge Cup Microcontroller Motherboard IAP15F2K61S2 (One-Click Download Version).zip

BOM_Blue Bridge Cup Microcontroller Motherboard IAP15F2K61S2 (One-Click Download Version).xlsx

96761

Duoduo IO Expander

This extender is suitable for SPI communication (both hardware and software) and serial communication (serial communication requires synchronous mode).
Theoretically, it can be extended indefinitely, but the more extensions you make, the slower the speed becomes.
You can follow me on Bilibili (a Chinese video sharing website) as a super genius in the computer world for detailed tutorials.

The tutorial link on Bilibili
is: https://www.bilibili.com/video/BV11j411s7h1/
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

Duoduo IO Expander Data Updated .zip

PDF_DuoDuoIO Extender.zip

Altium_多多IO Extender.zip

PADS_多多IO Extender.zip

BOM_多多IO Extender.xlsx

96762

electronic