About GPS receiver model and PPS Signal

[RenzoFurlani]

Hello,

How are you? Fine?

Yes, there are many other boards from your excelent LilyGo products, but , now, we are looking for some technical specific characteristics.

These are:

We need a PPS signal from GPS receiver.
It is important to use a uBlox receiver for its quality, but we are open to other receivers, with similar qualities.
We need to know more about the functionalities of the Battery Management System, for battery charging and battery loading, and for know how we can charge this lithium battery.
We need yes or yes a SD card slot.
Lora is not important for us, we would use BT for near communication.
We need to comunicate with external ADC devices, using SPI protocol.
Could you met me with some engineer from your company, please?

Best regards,

Renzo

[lewisxhe]

7080G does not have PPS, and all LilyGo modems do not have PPS connected to ESP. So you need an external GPS module

7080G board carries PMU battery management chip, automatic charge and discharge management, but there is a disadvantage that if it is turned off, it cannot be turned on automatically and must be turned on manually.

SPI, I2C are the most basic, and all include these functions

[RenzoFurlani]

Hello , Many thanks for your quick answer.

Please, could you advice me what is the best LilyGo to do a GPS based precise time syncronization and with SD card inside it?

Best regards,

Renzo

[lewisxhe]

There is no PPS function in the LTE series.
For PPS function and SD, you can consider T-BeamS3

[RenzoFurlani]

Many thanks,
Some other questions about T Beam series?
The "S3" mean that ESP32 is S3 model?
I see some T-Beams boards and I like theses. But in anything of that boards -i have seen a SD card socket.
T-BEAMS3 is not in the main web page of LilyGo, it is very new?

[lewisxhe]

1. Yes , ESP32S3
2. Yes ,it have sd socket
3. It can be found here https://lilygo.cc/products/t-beam-supreme?_pos=5&_sid=1682ba2a0&_ss=r

[RenzoFurlani]

Many thanks for your answers.

All the T BEAM have SD cards and Ublox with PPS connected to ESP32?

IF you have more details , more than the information of T-BEAMs put in the web page, I would appriciate you a lot.

[lewisxhe]

Only T-BeamS3 has SD and PPS, the ESP32 version does not.