New paxcounter v1.3.71 released:
This has probably nothing to do with the Paxcounter, it might be better in the ESP32 threadâŚ
Disclaimer: I have zero experience with ESP32âŚ
I just received a TTGO v2.1 and the display is looking strange:
I first thought the display was broken on one side, but when it is flipped the broken part is flipped as well.
This is the latest code, problem is identical if I rollback to 1.3.6 / 0.12.0 ESP32 platform.
It looks to me the issue is hardware (display controller)âŚ
Any other idea? Anything I can try?
Thanks
just give the device a power cycle (disconnect USB and battery). After second boot this strange effect disappears.
I had this with new devices, too, and it always disappeared after 2nd power cycle.
I have no idea whatâs the root cause for this strange behaviour. Maybe itâs caused by some issue between SSD1306 display controller and U8x8 library.
Much better 
The power cycle did the trick, thank you!
But the remaining question is: WHY?
As far as I can see once it is power-cycled, it remains good.
So maybe the âfactory firmwareâ put the display in a weird mode which is only reset at the next power cycleâŚ
The OLED display does not have RST connected via a GPIO. When the code is halted and the device (ESP32/display) is not reset the old contens stays on the display. A power cycle forces the display to lose its contents so this could possibly explain it.
Just made some current measurement with the TTGO V2.1âŚ
At 3.7v it takes a bit more than 300mA in operation, with small peaks to 385mA when it sends a LORA packet.
I still have a mystery to solve: I canât power it on with a battery, I need to briefly apply power from the USB; then when it is on I canât power it off, I have to unplug the battery.
The documented single-click / double-click doesnât seem to workâŚ
that screen looks like a siglent 3055 
The double click button does work.
If no USB is plugged and a battery is attached while it is off, then you can power on with single press on the button, and power off with double press.
New pacounter firmware version 1.3.8 is out!
It now supports the new TTGO T-Beam board, including GPS!
The generated payload fields are ttnmapper compatible. You can have ttnmapper integration of your paxcounter device in TTN with a few clicks.
Code is for serial GPS interface. Will be enhanced to I2C soon.
Doesnât work for me 
The button physically works, because reset is working, but I canât power on, nor power off (to test power off, I boot with USB + battery, then switch USB off so it is battery only. I can do reset and it will reboot, but I canât power it offâŚ)
Some hardware issue Iâm afraidâŚ
You need to boot on battery, otherwise the switch only resets the board.
YeahâŚ
⌠but that doesnât work 
Nothing happens when I press the button
Hmm, i donât know. On my board it works, same on TTGO T-Beam. It took while until i figured it out how to operate the button. Maybe same to you 
Here how i did it:
Yes, this is what I didâŚ
I tried with the LiPos I use for my other nodes, and with my lab power supply; pressing the button just does nothing.
Short press, long press⌠nothing worked 
Other than that, it is working quite good: with the device indoor, I see that packets are received by a gateway 8km from home!
> select * from gateway order by time desc limit 3
name: gateway
time channel dev_id gtw_id rssi snr
---- ------- ------ ------ ---- ---
2018-06-10T19:04:34.467040803Z 1 bulles-ttg21-01 eui-b827ebfffed1c970 -41 9.5 <-- mine
2018-06-10T19:04:34.46688818Z 1 bulles-ttg21-01 bigbazar -119 -12 <-- 8km
2018-06-10T19:04:34.4667012Z 1 bulles-ttg21-01 bulles-ic880-02 -45 12.5 <-- mine8 km, that s a lot. do you live in rural area, sending from a hill? line of sight?
thx
g.
Both points are in Brussels, so it is not particularly ruralâŚ
But I think they are both on a higher point compared to the surroundings; there are probably not too many buildings between both.
Note that the owner of the Ëbigbazar` gateway is anonymous, I have no mean of contacting him to check the correctness of its position⌠probably need some âwardrivingâ in that areaâŚ
Is there a smart way to upgrade in platformio? I just copied the new code over the old and redid the settings.