<![CDATA[T-Echo GPIO]]>Hi everyone, I have an answer, T-Echo has a little connector with scheme behind t-echo, the connector has 10 pin:
-GND. -VDD_Power
-P0.06 -VDD_Power
-P0.08 -SDA
-P1.07 -SCL
-P1.06 -P0.15

Ok I know that I can use sda and scl for i2c, but I haven't found nothing about other pins, are they digital, can I use they for communicate using UART?
Because I use meshtastic and want to set them in serial module and use them for communicate with an arduino which make me some calculations and send it to t-echo
thanks in advance

]]>https://www.community.lilygo.cc/topic/466/t-echo-gpioRSS for NodeWed, 15 Jul 2026 00:53:35 GMTThu, 22 Jun 2023 11:57:12 GMT60<![CDATA[Reply to T-Echo GPIO on Fri, 23 Jun 2023 15:52:27 GMT]]>@zendiego Here is the hard-core technical site for your product:
https://github.com/Xinyuan-LilyGO/T-Echo
There are example Arduino IDE sketches and a full schematic!
If you are not a hobbyist-programmer, I think you should seek your answers at the Meshtastic group.
-Terry

]]>https://www.community.lilygo.cc/post/854https://www.community.lilygo.cc/post/854Fri, 23 Jun 2023 15:52:27 GMT<![CDATA[Reply to T-Echo GPIO on Fri, 23 Jun 2023 14:57:04 GMT]]>Hi @teastain2 thank you for your reply,
Nope I haven't, I only followed the meshtastic site instructions, connected the t-echo via usb then drag and dropped the file.
Thank you for the schematic, I haven't found it anywhere.
For the calculations in NRF52840, I have no idea where to start because I don't know how to approch with meshtastic software inside.
Thanks in advance
-Diego

]]>https://www.community.lilygo.cc/post/853https://www.community.lilygo.cc/post/853Fri, 23 Jun 2023 14:57:04 GMT<![CDATA[Reply to T-Echo GPIO on Thu, 22 Jun 2023 17:57:43 GMT]]>@zendiego Hmmm.
Have you programmed it with Arduino IDE before?
I have no experience with the main chip NRF52840, as it is not Arduino or ESP32 !!!
Screenshot 2023-06-22 at 1.53.06 PM.png
This is from the schematic...and it also seems that the LEDs are user programmable.
Do you know what program is in the unit now?
It might be better to modify this sketch to experiment with the LEDS.
With respect to the Arduino making calculations, it might be better to add those calculations to the NRF52840 program?
-Terry

]]>https://www.community.lilygo.cc/post/852https://www.community.lilygo.cc/post/852Thu, 22 Jun 2023 17:57:43 GMT