ESP32 #69: ESPNOW simplex and duplex

Показать описание

Using the #ESP32 with the ESPNOW.

ESP32 Example:

API

Development Environment

Рекомендации по теме

Комментарии

Really great video! Thank you very much.
Just two details:
1- On line 253, write "WiFi.mode (WIFI_AP_STA);" instead of "WiFi.mode (WIFI_APSTA);"
2 - The failure of sending and receiving that you have commented occur when one device try to send data to other that is on scanning or sending at that exactly moment.

pedrocavaglieri

Thanks, this ESPNOW and ESPMesch could help when the ip-addresses running out on my home Network . The ESP8266 had similar Things as far as I remember.
But I fear a good Gateway function is still missing. What I remember were 2 ESPs coupled by Serial.

klassichd

The problem is that i want do a home automation by using WiFi modules node mcus to be precise, and I needed a protocol to control relays which are connected to a group of node mcus, after some research I found espnow can do this by allowing the esps to acts as slave and master simultaneously and my problem is if I apply espnow protocol can I send the triggers for the master to turn off or on the relays to a particular ic through mobile if I can then how? Is this possible

dharanisharma

Thank you for this interesting video. Have you planned to have a full MESH Network implementation to show us? I am courious to have one with MQTT as well.

istvanzilizi

Hi, nice video. I have a setup with lot of esp32 in a mqtt setup with red-node but need some peer2peer setup like here but at the same time WiFi and I can't find a setup where I have esp-now duplex like here plus WiFi. Thanks in advance

perkleinschmidt

Is it possible to use ESPNOW to send and receive audio to more than 2 ESP boards in the Multi Master/slave mode?

KheperahRay

Hi!
At 0:38 you state that using the ESP-NOW you can send data from multiple masters to one slave. I would like to make multisensor weather array using ESP32's. The sensors would be scattered around and one slave would read the data and display it as points of on a map ect. how the setup for multimaster-single slave system would go? Does the example code in the esp32 git libary work as is for this kind of implication or does it need some changes?

napiton

Do you know if the RSSI value is available when using ESP-Now communication? Thank you.

eduardogodoy

Hello
It is very informative video
i just wanted to ask that if i wanted to send and recieve numeric data, then what should i do with this example??

muhammadishaque

thank you for that video. i want to transmit several values that i have copied into one string.
here i build my string:
datastr =
now i would copy the string to data[] like in your sample:
sprintf((char *)data, datastr);
but i get a compiler error. what did i wrong?

frankjung

Hello, why not use esp_now_set_self_role function with ESP_NOW_ROLE_COMBO argument?

jeremiefiniel

Nice!. Hi, heard the first time about espnow. What are the advantage of this protocol?

petermeiner

Von wo hast du die Lib heruntergeladen. Könntest du mir nen link schicken. Ich finde die EspNow Lib einfach nirgends

BooBar

On the console, what is the message about when it says "Found 18 devices" (sometimes fewer; sometimes more)? You didn't have that many nodes, did you?

DownhillAllTheWay