Ttgo LORA v1.3 20190614 - will be reposted

This latest revision the OLED screen position has been moved downward

LORA V1.3 20190614

I flashed with V1.3 fw but no OLED, just blank display

NO i2c deivce detected in logs

The other older version working

Ok, the pinout for the OLED has been changed !

Modifying the source code here is required

#elif defined(TLORA_V1_3)
// This string must exactly match the case used in release file names or the android updater won't work
#define HW_VENDOR HardwareModel_TLORA_V1_1p3

#undef GPS_RX_PIN
#undef GPS_TX_PIN
#define GPS_RX_PIN 36
#define GPS_TX_PIN 13 // per @eugene

#define BATTERY_PIN 35 // A battery voltage measurement pin, voltage divider connected here to measure battery voltage

//#define I2C_SDA 4 // I2C pins for this board
//#define I2C_SCL 15

#define I2C_SDA 21 // I2C pins for this board
#define I2C_SCL 22
��␀�␀␀␀�␀␀�␀�␀␀��␀�␀�␀␀␀�␀�␀��␀��␀␀��␀�����␀�␀␀␀�␀��␀���␀␀�␀␀␀␀���␀���␀�␀␀��␀�␀���␀�␀␀�␀����␀�␀␀�␀␀␀␀�����␀��␀␀�␀��␀���␀��␀���␀���␀�␀���␀��␀���␀�␀���␀�����␀��␀␀␀␀��␀��␀��␀����␀�␀␀�␀�␀␀␀␀␀��␀��␀��␀���␀��␀���␀�␀␀�������␀��␀�␀��␀␀�␀���␀␂H␁??:??:?? 0 booted, wake cause 0 (boot count 1), reset_reason=reset
??:??:?? 0 Filesystem files:
??:??:?? 0   /static/Logo_Black.svg.gz
??:??:?? 0   /static/safari-tab.svg.gz
??:??:?? 0   /static/site.webmanifest.gz
??:??:?? 0   /static/index.72f7c624.js.gz
??:??:?? 0   /static/android-192.png.gz
??:??:?? 0   /static/vendor.8c5c8d57.js.gz
??:??:?? 0   /static/favicon.ico.gz
??:??:?? 0   /static/favicon-32x32.png.gz
??:??:?? 0   /static/workbox-b7e829be.js.gz
??:??:?? 0   /static/favicon-16x16.png.gz
??:??:?? 0   /prefs/db.proto
??:??:?? 0   /prefs/radio.proto
??:??:?? 0   /prefs/channels.proto
??:??:?? 0   /static/android-512.png.gz
??:??:?? 0   /static/robots.txt.gz
??:??:?? 0   /static/index.24ad45a6.css.gz
??:??:?? 0   /static/manifest.webmanifest.gz
??:??:?? 0   /static/.gitkeep
??:??:?? 0   /static/touch-icon.png.gz
??:??:?? 0   /static/Logo_White.svg.gz
??:??:?? 0   /static/sw.js.gz
??:??:?? 0   /static/index.html.gz
??:??:?? 0 I2C device found at address 0x3c
??:??:?? 0 ssd1306 display found
??:??:?? 0 done

I believe this is related: TLora32 2.1 does not send batteryLevel to mesh · Issue #1039 · meshtastic/Meshtastic-device · GitHub

I’m running this exact board and the OLEDs work fine. From firmware .48 to 50.

Im not using battery at all

Which one ? There are multiple revisions

I have old and new

The location and rotation of the OLED, Lora antenna connector and the color of the power on LED have changed between the ones i have


The one titled in this post. What other version is there?

I updated my pictures above

Those are completely different versions and have different firmware targets.

I had to mirror this 3D Stl also since the OLED position changed

Yes, I know

But the fw does not match the changed OLED pins

They’re simply not the same. The T3-V1.6 you refer to in the title is actually TLora v2.1 - 1.6. The printing on the board is confusing, I know. But if you just follow the link from the official Meshtastic page, it’s the right one.

There are Thingiverse cases for the v2.1. You don’t have to modify the older ones.


Go look at the source code

There are 2 version 1 boards


both configured for OLED on Pins 4 and 15

This does not work on this V1.3 board

These pins now changed to 21 and 22

Version 2 has a sdcard, Version 1 no sdcard

v2.1 is also the only board with an SMA connector. Just follow the links on the official web page.

Wait, sorry I see posted the completely wrong pictures above

I suggest you make a new post. This thread is now very confusing to anyone who reads it.

Yes, it would seem better, give me a moment