Скачать или смотреть WebSocket data telemetry at 80Hz - ESP8266

Fairly high-speed websocket data transmission @ around 70Hz.

Probably nothing to be particularly proud of, but a nice result of the day.
Other tinkerers are able to reach ~300Hz (check out    / cnlohr  ) over WebSockets, also with larger data chunks, but this here is without much optimisation and done in Arduino IDE without touching anything more low-level. More or less an example from the arduinoWeSockets repo, boltet together with display output and a simple websocket server script.

ESP8266 is running at 160Mhz,
using Markus' excellent websocket library, https://github.com/Links2004/arduinoW...,
the library is working in ASYNC mode, via ESPAsyncTCP lib.
websocketd (http://websocketd.com/) is serving a simple script doing "on anything coming in via STDIN, answer
with an incrementing counter on STDOUT, reset counter to 1 at 125"

Every cycle of the loop() starts with ESP8266 making a tiny request to the websocket server, a Linux desktop machine connected via WiFi, asking for reply with a short "hello" message.
This triggers the script served by websocketd to send back a (one!) number, the counter. Like a simple Ping/Pong.
I'm using this "only send/answer when asked"-scheme to have flow control of sorts.
ESP8266 is then printing this counter as-is to the OLED.

Although the OLED is updated on every loop(), the actual counter may not, as the webSocket.sendTXT "ping" is throttled to happen at max every 15ms, while each loop() takes a measured 3-8ms. This is to be easy on the ESP's WiFi stack.