Hello,
I use ESP-NAU as a clock/time synchronization.
For this I have an ESP32 as a transmitter and many (approx. 35) ESP8266 as receivers.
- One-to-many
- usually 1 transmitter and 3 - 5 receivers at the same time, constantly changing
- ESP32 package 2.0 so far
- Arduino IDE
- maximum distance 7 m
- transmitter and receiver "see each other"
- During reception, the ESP8266 waits in a while loop and has nothing else to do.
- all ESP8266s have so far been assigned the same MAC address
- No registration
- No encryption
- No response
Simply send a message (ping) to everyone at the same time with an interval of 1 second.
This enables me to trigger a process on the ESP32 and the currently active ESP8266 at the same time.
The transmission time is actually not important.
In order to calculate the transmission time, the differences in the transmission time between the individual pulses must be as small as possible. As few µsec difference as possible. At the moment I have achieved a maximum of 20-30 µsec difference.
How can I design this system with the ESP32 package 3.0?
The time difference between the individual transmissions should be as small as possible.
Of course you can now use the broadcast function.
Can ESP32 and ESP8266 still be combined?
Can the accuracy be increased by sending several pulses/messages in quick succession?
The ESP8266 also sends a response to the ESP32. This is solved by switching and is absolutely NOT time-critical.
Many thanks.
Regards Frank
ESP-NOW 3.0
Return to “General Discussion”
Jump to
- English Forum
- Explore
- News
- General Discussion
- FAQ
- Documentation
- Documentation
- Sample Code
- Discussion Forum
- Hardware
- ESP-IDF
- ESP-BOX
- ESP-ADF
- ESP-MDF
- ESP-WHO
- ESP-SkaiNet
- ESP32 Arduino
- IDEs for ESP-IDF
- ESP-AT
- ESP IoT Solution
- ESP RainMaker
- Rust
- ESP8266
- Report Bugs
- Showcase
- Chinese Forum 中文社区
- 活动区
- 乐鑫活动专区
- 讨论区
- 全国大学生物联网设计竞赛乐鑫答疑专区
- ESP-IDF 中文讨论版
- 《ESP32-C3 物联网工程开发实战》书籍讨论版
- 中文文档讨论版
- ESP-AT 中文讨论版
- ESP-BOX 中文讨论版
- ESP IoT Solution 中文讨论版
- ESP-ADF 中文讨论版
- ESP Mesh 中文讨论版
- ESP Cloud 中文讨论版
- ESP-WHO 中文讨论版
- ESP-SkaiNet 中文讨论版
- ESP 生产支持讨论版
- 硬件问题讨论
- 项目展示
Who is online
Users browsing this forum: Baidu [Spider] and 55 guests
- All times are UTC
- Top
- Delete cookies
About Us
Espressif Systems is a fabless semiconductor company providing cutting-edge low power WiFi SoCs and wireless solutions for wireless communications and Internet of Things applications. ESP8266EX and ESP32 are some of our products.