Article on E220 modules mixes E220 / E22 / E32

[Gulpman]

Hi,
I’m totally new to LORA and ordered two Ebyte E220-900T22D modules.
After cross-reading on the articles here, I finally understood what confused me in the beginning (and still is a little bit).
Within the article Ebyte LoRa E220 LLCC68 device for Arduino, esp32 or esp8266: specs and basic use – 1
the E22 / E32 and E220 modules are mixed up.

Whilst for the graphics this may be not easily fixed, for the text it would be helpful.
Just as an example: In the section “Connecting esp32 for a basic usage”

• The picture denotes an E32-TTL-100
• The caption talks about an Ebyte LoRa E22 device
• The Pin table below that also talks about the E22

whilst the article is about the E220.

I got it now that all three of them should be pin-compatible, but when you are totally new to the topic, the mixing of modules is a little bit confusing.

Also in the connection diagram for the ESP32 there is a jumper cable for V3.3 to the upper V3.3 rail of the bread board missing.

I am still confused about the AUX pin: I the table you are saying it is not connected but in the diagram it is connected to 3.3V and a 4,7k pull-up resistor.
So what would be the correct way to deal with AUX?

Anyway, thank you very much for your effort in providing this module / these modules for us! I really appreciate it.

Best
Sascha

[Renzo Mischianti]

Hi Gulpman,
It’s true, and I’m going to adjust something. I reused some schema from the previous article, and I don’t give attention to the single label, only to the connection schema.

But AUX isn’t connected (to the microcontroller) but It’s pulled up.

Thanks for the alert about that issues, if you find something else alert me.

Bye Renzo

[tarpacik]

Hello did you adjust the site for e220

[Renzo Mischianti]

I think It’s very clear, and many people use It.
What problems do you have?
Bye Renzo

[tarpacik]

I used ftdi module to connect the lora e220 to pc and configure the lora by the ebyte programme. Then I used your “get configuration” example but I got “no response” on serial monitor.
Can I use ftdi module and ebyte configurator programme for configuration? And if I can use ftdi module how will I use it?

[Renzo Mischianti]

Hi, tarpacik,
if you get “no response” you probably insert an error, power supply, or wiring problem.

You can’t use only FTDI to program an EByte module. You need to manipulate M0 and M1.

Bye Renzo

[tarpacik]

Thanks for your concern, I checked the wiring and I left M0 and M1 grounded so I got “no response” error I think.
I have another question, how can I write “LoRa_E220 e220ttl(RX, TX, AUX, M0, M1);” part without M0 and M1 for arduino and for esp32

[Renzo Mischianti]

Hi,
if you don’t want M0 and M1 don’t add they in the constructor.

you can find a lot of declaration examples in the examples, or the the articles.
Bye Renzo

[tarpacik]

Hi Renzo. I made the connections between 2 unos using e220 and I achieved rx and tx between them. Then I try between uno and esp32 but I can not achieved rx and tx. Can you help me?

[Renzo Mischianti]

Hi tarpacik,
I need to know what are you doing to help you.
Send me wiring and code.
Bye Renzo

[tarpacik]

Hello Renzo, I have uploaded the sketches. Thank you.

[tarpacik]

here is the wiring

[Renzo Mischianti]

Hi tarpacik,
It seems ok, it can be a configuration problem. I can’t see any other issue.
Bye Renzo

[tarpacik]

Hi Renzo. I want to communicate between UNO ad ESP32. Both UNO and ESP32 will transmit and receive data. Whem I use your library without AUX pin it is ok but after a while data freezes on serial monitor and if I reset either ESP32 or UNO data comes again. How can I fix this?
My second question; I want to AUX pin because without AUX pin there is a delay and I don’t want delay, but when I add AUX pin (pulled up with 4.7 k to 3.3 volt on UNO and ESP32) there is no data on neither UNO nor ESP32.

[Renzo Mischianti]

Hi tarpacik,
you send/receive more than 1000 messages per second, and you can’t do that.
Bye Renzo

[tarpacik]

And what is your offer to fix that,and what can be the minimum time between tha datas?

[Renzo Mischianti]

Hi tarpacik,
I think It’s better if you use an example with the library.
Bye Renzo

[tarpacik]

Hi Renzo. Can you publish a sketch that both transmits and receives analog input value?

[Renzo Mischianti]

Hi,
You can find it here
Ebyte LoRa E220 device for Arduino, esp32 or esp8266: manage Wake On Radio and sends structured data – 5

Bye Renzo

[Author]

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