TTGO T-Beam V1.1, SX1268 Supported

[erikdewildt]

Hi,

The docs mention support for the "TTGO T-Beam V1 (433MHz SX1278)". Is the 1.1 version of the board also supported? Those seem to be the only ones i can buy on AliExpress. Link

Also i noticed a version of the TTGO T-Beam V1.1 with a SX1268 chip. This one has a bit more power and lower current draw. Is this chip supported as well?

Thanks, Regards,

PE1PUX, Erik

[wolfpcgn]

imho the version 1.1 should be supported because the only difference seems to be the protection against wrong insertion of the battery. I don't know about a SX1268-version, where can I buy it? edit: found it at Ali for more than 60€.

[yooshky]

Does it work fine on the SX1268? How to do it?

[peterus]

SX1268 is still not supported, but I have a board at home to test this out. please stay tune until I have the correct changes.

[kratinoska]

I tried iGate and Tracker on t-beam with SX1268 does not work. serial monitor on Tracker: LoRa_APRS_Tracker.cpp 384 : Starting LoRa failed!

[DC4FRT]

is there already a solution? I only looked at 430Mhz when ordering the LORA board, and not at SX1278 and SX1268. The difference seems to be only in the frequency band and an integrated DCDC converter. BR Thomas

[Ingineerix]

Looks like the v1.1 also uses the AXP2101 power controller, which doesn't initialize: "AXP192 init failed!" Seems like the fix would be to migrate to the XpowersLib which can do the new chip and the older ones.

[kratinoska]

My v1.1 SX1268 uses AXP192.

[ab0oo]

There's some mis-labeling going on with the new T-Beams. The silkscreen on the board says "TBeam -AXP2102-v1.2". The big shiny sticker on the end of the board says Model: T-Beam-V1.1. It also comes with a Neo-M8N GPS module.

[kratinoska]

version of my board is T22_V1.1 20210222 (SX1268,, GPS NEO-M8N, IPEX )

[Ingineerix]

Mine is like ab0oo's above, and definitely has the AXP2101 PMIC, so incompatible. Picture Here The board powers up but you get no Radio power because the PMIC hasn't been told the voltage.