gQ3pZy

Bluetooth console - ch9140 version

Overview

This project was modified based on the work of the expert Yiruhua and the schematic provided by swtbh in the comments section. Since the switch's console port lacks serial flow control, the CTS and RTS interfaces were deleted and left empty. After soldering the initial solution, the CRT tool was found to be unresponsive. Reversing the 3rd and 6th pin wiring of the network cable resolved the issue. Therefore, in this version, the SP3232 RX and TX labels were swapped, and testing confirmed it worked correctly.

Design Files

All reference designs on this site are sourced from major semiconductor manufacturers or collected online for learning and research. The copyright belongs to the semiconductor manufacturer or the original author. If you believe that the reference design of this site infringes upon your relevant rights and interests, please send us a rights notice. As a neutral platform service provider, we will take measures to delete the relevant content in accordance with relevant laws after receiving the relevant notice from the rights holder. Please send relevant notifications to email: bbs_service@eeworld.com.cn.

It is your responsibility to test the circuit yourself and determine its suitability for you. EEWorld will not be liable for direct, indirect, special, incidental, consequential or punitive damages arising from any cause or anything connected to any reference design used.

Hot

Technical Resources More

Search Datasheet?

Supported by EEWorld Datasheet

Technical Videos More

Forum More

Update:2026-03-27 22:46:48

This book teaches you a comprehensive understanding of ARM architecture --- ARM Soc architecture
宋体] [/font][/size][/backcolor][/align][align=left][backcolor=rgb(255, 255, 255)][font=宋体] [/font][/backcolor][/align][align=left][size=4] This article introduces the design principles of general micro
LANUCH PAD successfully drives the screen bought from Taobao.
I have been looking for it on the forum for several days, but no one has given me a code reference.
How to protect smart sockets in smart homes?
From the initial concept to now, the development of smart home has begun to enter the homes of ordinary people. Well, literally means that even poor families like Guanzi can have one or two devices th
Newbie: Can I call other ready-made streaming interface drivers in the streaming interface driver?
I am a novice and am learning the streaming interface driver of Windows ce. In order to write applications conveniently, I want to modify some already written drivers, such as GPIO driver package to b
Massive switching power supply information, welcome to download
海量开关电源资料，欢迎下载
ADS1115 Program Based on DSP
Has anyone made an ads1115 program based on f28335? The scl and sda signals are always off, I don't know what's going on

Datasheet More

Circuits More