@kadri Can you provide code for how your setting up the two devices?

Hi! I am encountering the same issue! I have replaced the # defined for the modem from TINY_GSM_MODEM_A7670 to TINY_GSM_MODEM_SIM7600, which got the sketch to compile, but the modem doesn't get any GPS reading. This post is the number one result on Google, but sadly, there isn't much help here yet. As you've pointed out, I have a feeling it's a TinyGSM library issue, but I am kinda lost on debugging it from here. It'd be great if someone got the GPS working and found this post sometime in the future...

@franl What Arduino codes did you download and have trouble with?
I will try to help.

Hi! Any of the pins SHOULD be able to support I2C :
Screenshot 2024-03-26 at 1.45.36 PM.png

I would avoid the pins for the optional W5500 board as shown here.

@wellco ..answering myself here, it may help others.

I now have the right output in the serial window. Many frustrating hours were spent trying to make it work. Somehow Tools\USB CDC On Boot: Enable, had reset to disabled. It took me a while to realise this.

Then (this is the vague bit) sometimes I need to click the RST, Boot and Power buttons in various sequences. This is what usually works if the serial monitor window is blank.

Press the RST button momentarily and wait for 20 seconds. If window is still blank .. Press the power button and hold for 6 secs. Release and press momentarily, wait for 20 seconds. If window is still blank .. Unplug the USB hold down the Boot down and plug the USB cable back in. Upload you sketch again. Hurl device against a solid wall with as much force as you can muster ☺

Joking apart; there is also another button sequence that might help and that's the documented one. Hold RST down, press and hold the Boot button. Release the RST button, and finally release the Boot button.

Hope this helps somebody..

Cheers Wellco

@ankurlaitkor Output screen

935694ee-5031-43a4-90a9-993122a1c0b5-image.png

@king_412r Two approaches:

The wider Lora hobbyist community The LilyGO technical site:
https://github.com/Xinyuan-LilyGO/T-Deck

You can also try sales at LilyGO to see if they respond !
-Terry

int AXP20X_Class::shutdown() { uint8_t val; if (!_init) return AXP_NOT_INIT; _readByte(AXP202_OFF_CTL, 1, &val); val |= (1 << 7); _writeByte(AXP202_OFF_CTL, 1, &val); return AXP_PASS; }

The two pin connector on the back. Newer T-Displays come with a connector/leads.