Comments on: ESP32 Wireless Communication Protocols

By: Giancarlos Cataldo

Giancarlos Cataldo — Mon, 24 Feb 2025 00:29:53 +0000

I am interested in ESP32 Wireless Com protocols because I have a project for parking guidance system using Ultrasonic Sensor for detect car presence in a parking stall.
Original idea was develop a board with a ESP32 microcontroller, a ultrasonic distance sensor and RS485/RS422 capability in order to connect a lot of board to a RS422/485 to Ethernet gateway.
Thinking out of a box, prefer only send DC power to boards and use wireless communication.
This wireless communication must be on a mesh. Using same ESP32 based board as repeter for long distances in a parking lot.
Do you know if ESP32 support mesh based protocol for wireless com?

By: Sara Santos

Sara Santos — Fri, 24 Feb 2023 14:40:14 +0000

In reply to Noel.

Hi.
I updated the Maker Advisor page.
Basically, these boards are deprecated. You can only find them on Banggood, Aliexpress or eBay.
On Amazon, you can find the most recent and improved version 2.1. I haven’t tried the 2.1 version, but it should work similarly, with enhanced features and better range.
Regards,
Sara

By: Sara Santos

Sara Santos — Fri, 24 Feb 2023 13:57:52 +0000

In reply to Noel.

Hi.
Thanks for the warning. I’ll try to update the page today.
Regards,
Sara

By: Noel

Noel — Thu, 23 Feb 2023 21:44:06 +0000

Thanks for the article. Unfortunately, most of the Maker Advisor links for LoRa boards are expired. You may not be benefitting from any referrals there also. I am a little cautious in searching for my own items, as there are so many variations and not all of them might work. Perhaps you could have a look into this ?

Best regards – Noel

By: summer

summer — Fri, 09 Dec 2022 03:21:32 +0000

Hi, thanks for the great job.
I have a question about ESM32CAM client stream on TTGO server, that is must power on server first, and power on client next, any way to improve this please?
Thanks
Summer

By: ESP32 Wireless Communication Protocols

ESP32 Wireless Communication Protocols — Sun, 13 Nov 2022 14:01:22 +0000

Hello.
Sarah and Rui = one-click help:)
If you read carefully what they write and then work consistently, 99.9% of the time everything works – one-tenth is because no person is infallible – my experience so far. And a lot of their work is just for thanking you here, so warm thanks.
On the topic: my esp 8266 is updated via wifi and OTA, esp32 should also be done.

By: ngless

ngless — Sun, 30 Oct 2022 12:55:08 +0000

I’m questioning the ESPNow portion of this article. In my experience, pairing is not required, only address. Additionally by default it is not secure or encrypted.

One thing I’m very curious about is Long Range mode for ESP32. There is not much documentation or examples utilizing it. I’m curious if it’s just using the antenna at a higher DBI.

By: Sara Santos

Sara Santos — Sat, 29 Oct 2022 15:07:38 +0000

In reply to Tony.

Thank you so much for your nice words!
Regards,
Sara

By: Tony

Tony — Sat, 29 Oct 2022 14:16:32 +0000

Rui, Sara, You are THE BEST!
Very much appreciate your tutorials and articles, and your response to emails!!
And love your eBooks!
Have greatly benefitted from your contributions in this space!
Thank you!

By: Bryan Inglis

Bryan Inglis — Fri, 28 Oct 2022 23:16:36 +0000

No mention of the NRF24, good range, up to 2mb speed and reasonable packet size?