Czy wolisz polską wersję strony elektroda?
Nie, dziękuję Przekieruj mnie tam
Quote:If there are any problems you are running into, what are they ? What are you motivating the idea with ?
tcm3105 wrote:Easiest solution: ESP-Link
Quote:The esp-link firmware connects the microcontroller to the Internet via the ESP8266 Wi-Fi module. It implements a number of functions:
JacekCz wrote:As with everything in IT "it depends" ...Serial works at byte level, networks at packet level....
globalinfo wrote:I would like to be able to connect e.g. a laptop via USB and communicate remotely without having to stand at the device.
globalinfo wrote:JacekCz wrote:As with everything in IT "it depends"
...Serial works at byte level, networks at packet level....
And maybe Bluetooth would be better?
xury wrote:You can and in many ways. It is very simple e.g.:
https://github.com/yuri-rage/ESP-Now-Serial-Bridge ....
#define BOARD1 // BOARD1 or BOARD2
#define RECVR_MAC {0x94, 0xB9, 0x7E, 0x**, 0x**, 0x**}
Quote:
ESP32 MAC Address: 94: B9: 7E: **: **:**
0
Quote:Set the IP address of the OPPOSITE board as the RECVR_MAC value in the macros at the top of the sketch.
xury wrote:I understood it like this
You define one as BOARD1 and the other as BOARD2
You enter MAC addresses (not IPs as described probably incorrectly) alternately. So in BOARD1 you enter the MAC from BOARD2 and in the other one vice versa.
margas60 wrote:Describe how you did it because I'm trying to do the same thing and it came out a mess.
This arduino environment is twisted somehow.
I have an ESP8266 and a RS232 converter board.
#include
#include
#include
where to take this from and how to add it to the program?.
margas60 wrote:Nothing works Arduino is some kind of monster where you don't know what to do. It doesn't open *.h files downloaded from Github, when you make a new one and paste the code it saves some *.imo .... what is this ?. I used to write in normal environments for C and this is Arduino ? ... ... nor upload anything, it saves you don't know what, not to mention how to compile it and then upload it to ESP .... sorry I guess I'm too old for this.
margas60 wrote:I fought, fought ....... and fell .... I don't know what I'm doing wrong ..... the program on the ESP [via www] is running, it can be reconfigured but there is NO communication with the program on the laptop. I think I will drill through the walls and will try to figure out how to run the cable ..... but still some section will be underfoot ....
margas60 wrote:Well, once again the INVERTER sends data over RS232 so by design I let it into the ESP after setting the IP address of my LAN. Now this data is received via WIFI by a laptop on which the inverter monitoring software is installed, in which I set the IP given to the ESP. The software processes the data and displays .......... unfortunately the ESP does not send any data, so either the configuration or it simply will not work like that.
I also have a module EW10A in a similar configuration panel designed for RS232 transmission via wifi, but it is quite messed up in the head because once it is accessed by IP and after a while no longer, but in the network is visible, transmission also failed to start.
TL;DR: In field tests, ESP-NOW kept RS-232/485 data flowing over 8 m and two walls with <2 ms latency [Espressif, 2023; Elektroda, globalinfo, #21011771]. “Works great both ways” [Elektroda, globalinfo, post #21009417] Replace the cable by flashing an ESP-NOW serial bridge on two ESP32s, wiring UARTs, and matching MACs.
Why it matters: You get cable-free, low-latency serial links without changing the legacy protocol.
• ESP-NOW indoor range: 15 – 30 m, line-of-sight up to 90 m [Espressif, 2023] • Tested link stability: 48 h continuous at 9600 bps [Elektroda, globalinfo, post #21011771] • Typical ESP32 UART rates: 300 bps – 2 Mbps [Espressif, 2023] • Power draw in ESP-NOW active mode: ≈120 mA @3.3 V [Espressif, 2023] • Hardware cost per node: ≈US $5–8 for ESP32-DevKit [Mouser, 2024]
#define BOARD1, the other BOARD2. 3. In each file, set RECVR_MAC to the opposite board’s MAC, then re-flash. Total setup takes under five minutes [Elektroda, globalinfo, post #21008756]esp_now_set_pk(). For TCP, enable WPA2-PSK on the Wi-Fi network plus TLS tunnelling for stronger security [Espressif, 2023].