Ttgo T-beam


#21

UPDATE the config.h file in the same folder WITH YOUR TTN KEYS AND ADDR.


(Costel) #22

thank you. it works
is there a way to see on an oled display wich gateway saw me and how far away by calculathng the distance between t-beam gps and the location of the gateway?


#23

you can create an application that receives MQTT from the TTN backend (a dedicated RPI ?) and then calcultae a distance between two points and transmits the result over lorawan or maybe a webpage which you can see on your mobile.

it’s done by someone here but I can’t find the link now


(Costel) #24

thank you.


(Coeus) #25

As I was about to get a couple of TTGO T-Beam, I realise there are two different versions with a different GPS chip (NEO-6M & NEO M8N) - I am not sure if there’s any difference in the schematic that would influence the possibility of going idle / sleep on low power.
Anyone has any knowledge about that? Or any success in achieving low power consumption?

I was speaking with apparently the manufacturer representative in WeChat, if I can gather any information about that I will keep everyone in the loop.


(Roeland54) #26

No I think it is just the GPS chip that is changed.

Tried to use serial to configure the NEO-6M on my ttgo t-beam but had no succes. Very strange I wonder if its a fake one.


(Verkehrsrot) #27

Same here with NEO-6M on board. I also wonder if the NEO is a fake.


(Costel) #28

hello,
t-beam was working fine untill 2 days ago…i have no data ever since.
i tried to reflash butt still no luck
i get this on the serial monitor…it seems like it is on endless restart loop

Rebooting…
ets Jun 8 2016 00:22:57

rst:0xc (SW_CPU_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
configsip: 0, SPIWP:0xee
clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
mode:DIO, clock div:1
load:0x3fff0018,len:4
load:0x3fff001c,len:812
load:0x40078000,len:0
load:0x40078000,len:11572
entry 0x40078a5c
assertion “entry < ENTRY_COUNT” failed: file “/Users/ficeto/Desktop/ESP32/ESP32/esp-idf-public/components/nvs_flash/src/nvs_page.hpp”, line 188, function: uint32_t nvs::Page::getEntryAddress(size_t) const
abort() was called at PC 0x400d93e3 on core 0

Backtrace: 0x40091428:0x3ffce520 0x40091603:0x3ffce540 0x400d93e3:0x3ffce560 0x400dd72b:0x3ffce590 0x400ddd0f:0x3ffce5b0 0x400dea71:0x3ffce600 0x400dcf0e:0x3ffce660 0x400dca2a:0x3ffce6b0 0x400dcac3:0x3ffce6d0 0x400dcb0e:0x3ffce6f0 0x400d5170:0x3ffce710 0x401150bf:0x3ffce730 0x400da2ca:0x3ffce760

Rebooting…
ets Jun 8 2016 00:22:57

rst:0xc (SW_CPU_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
configsip: 0, SPIWP:0xee
clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
mode:DIO, clock div:1
load:0x3fff0018,len:4
load:0x3fff001c,len:812
load:0x40078000,len:0
load:0x40078000,len:11572
entry 0x40078a5c
assertion “entry < ENTRY_COUNT” failed: file “/Users/ficeto/Desktop/ESP32/ESP32/esp-idf-public/components/nvs_flash/src/nvs_page.hpp”, line 188, function: uint32_t nvs::Page::getEntryAddress(size_t) const
abort() was called at PC 0x400d93e3 on core 0

Backtrace: 0x40091428:0x3ffce520 0x40091603:0x3ffce540 0x400d93e3:0x3ffce560 0x400dd72b:0x3ffce590 0x400ddd0f:0x3ffce5b0 0x400dea71:0x3ffce600 0x400dcf0e:0x3ffce660 0x400dca2a:0x3ffce6b0 0x400dcac3:0x3ffce6d0 0x400dcb0e:0x3ffce6f0 0x400d5170:0x3ffce710 0x401150bf:0x3ffce730 0x400da2ca:0x3ffce760


(Linar) #29

One of LilyGO’s AliExpress stores is doing a promo sale of the T-Beam boards right now -

p2-ae-discount-eu