go to website… select serial monitor button… connect device to usb should show as a com port select and see if you are recieving log data… if so you do not need to update firmware… it is running in meshtastic mode
if so you should go to your phone and go to bluetooth and if the device has paired… delete or forget device and re-pair password is 123456 or if it is not set youy will have to look at the serial monitor log and it will tell you the bluetooth random generated pair key
in the future you may want to try to upgrade firmware… but this is not necessary at this time
Hello,
I’m planning to buy a couple of those [Xiao ESP32S3 & SX1262 LoRaWAN] and I’m wondering what are the pins available to connect sensors on it ?
It seems that all the pins are used by the two cards … could you clear my mind ?
Thanx
Prof from France
And Welcome Here. There is a schematic available in the WiKi give that a peek also, but the S3 uses the B2B connector for the SX1262 so the other pins are still available, I connected the external buzzer and the I2C ssd_1306 Display in the picture above. The Radio is connected with the SPI interface for example on the Nrf52840 Version So less or No pins are available. The ESP32S3 has more flexibility for that.
Awesome, Please mark @cgwaltney 's post as the Solution So others can find it fast. Thanks for contributing too.
Way to go Sticking with it , when this junk can get confusing as hell…
Yes like he said… it seems the s2 has the most gpio available because it is using the b2b connector leaving the standard XIAO pins availavble… I would also recommend if you are using the s2 device get the XIAO expansion board as well… I mean s3… who can keep up
That is good to know about the green led. So moving on now i have my new firmware. You all talk about using pins so if I up load code (my next thing is to add the little oled screen ) do i just load the coade and the firmware is intact or do I need to see the whole firmware and add code to some part of it.
The XIAO ESP32S3 plus board still leaves 10 (ten) pins unused/unconnected on the MCU.
Why not bring those extra 10 pins out as castellated connectors on the bottom edge? (Use 8-layer board if needed)
The PLUS board has extra SMT connectors between the “old” pins, but all the extra pins (except one) gets used up when a LoRA board is plugged in.
EDIT:
Sadly, the SX1261 LoRAWAN cannibalizes the already used D8, D9, D10 SPI bus pins on the ESP32S3plus, where it possibly could have used IO11, IO12, IO13 SPI bus pin on the B2B connector.
In fact, all the connections on the ESP32S3 could have avoided using the small in-between castellated connections in lieu of TWO B2B connectors ON THE BOTTOM, for electrical and mechanical connection.
PJ 
