Schematics are already stored on Github

479330e5-d79c-41c6-8927-0433a9c5bf67-image.png

Just move the green original to the red position to use the external antenna

TTGO LoRa32 V2.1-1.6 is the same as TTGO LoRa32 V2.1-1.6.1, we just changed the silk screen on the board. The OLED on the board uses (SDA)21 , (SCL)22 There are schematic diagrams and reference codes in our warehouse, please see here Link

@andyclap When the battery is depleted, the noise source is from the DCDC boost inductor on the board, thanks for your feedback, I will discuss the solution with my team.
Recommendations on power consumption:

When starting T-Higrow, it is recommended to reduce the main frequency of ESP32 to 160, or lower, if not using WiFi, it is recommended to lower to 80, 40MHz If WiFi transmission is used, it is recommended to reduce the number of transmissions, and then package and send the data uniformly. The number of acquisitions can remain unchanged.

Thanks for your feedback.

Link

58498dd0-cd15-4a17-933d-2fe0cf5de84c-image.png

@chaymasa If you want to know the LoRa chip model used in T-Beam, you can check the link. If you need to write the version of LoRaWAN, you need to see the version supported by the software.

@jezerca said in 10000 mAh Li-Po battery with TTGO T-Call&PMU SIM800L ?:

Hi all,
Expect the long charging time, would there any problem to use such kind of battery? Does the AXP192 board support it?

Hi. You can use this 3.7V battery, the default charging current is 500ma, you can modify it by programming.

esp32 uses FFAT32, the file system supports up to 32G

@destroyedlolo Great idea, we actually already have a similar product. Such as T-SIM7000 series.

Only the welding port of the BME280 sensor is reserved. The default is without BME280 sensor.

@scheeri about 200ma

@scheeri It can be connected to 5v, but after connecting to 5v, you cannot plug in USB at the same time.

@fdaher 👍

HTB19DIoaovrK1RjSszfq6xJNVXaq.jpg
D1 and D2 pins are I2C

@caz that's great , if you have any other questions in use, please feel free to contact us.

hi, GPIO35 is usually used as a battery status detection pin. Can you post pictures of your products? We can correspondingly find the schematic diagram to give you accurate answers. thanks.

@mohir https://www.arduino.cc/en/Tutorial/HomePage
This is the official tutorial site about Arduino

https://github.com/Xinyuan-LilyGO/LilyGo-T-Display-S2
This is the GitHub demo code about T-DISPLAY-S2