both have presoldered headera from seeed - esp32s3 sense has male pins and the camera - lora has female with male pins below the board - and yes im trying to use b2b - plugging esp32s3 sense into the lora female connector. I did a multimeter check and 3.3v is reading 3.3v so current is passing through the b2b.
Hi there,
Your code then is BASS _Ackwards 
The code is such that the Lora is B2Bā¦
You want the SPI Lora boardā¦
What I just tested is the board stack
You see this ?
GL 
PJ 
the presoldered wio-sx1262 with female up top and male below is what I am using - or trying to use - I need the camera as the app Im writing is a surveillance system - so a vanilla esp32s3 wasnāt an option - I thought the sense board with this looked like the easiest way to go. So you are saying the board combination is incompatible for some reason? Can you recommend a sure fire lora that works with the esp32s3 sense?
No, you have the wrong code for that board.
GL PJ
now I see why you had theSPI stuff, not needed anyway.
Iāll post the correct version.
Also START with the Camera removed for testing.
just work with the S3 and Lora first.
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it may be possable but you have to understand that the code is absolutly different, because the b2b GPIO pins are completely different than the pin GPIOā¦ so you would have to dig deep into the code to figgure it outā¦ I am pretty sure they should work as you have shownā¦ technically, but the codebase is not set that way
yeah I see you have a usb into your lora - I dont have a usb connector on my lora - thats on the esp32s3 sense -
standing by - my mistake on the code reversal - I didnt think that would be an issue on something like b2bā¦I thought the spi might be faulty on the esp32 when I started this so I added the checks to see if I had a bad board. Copy on the camera - will remove
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Hi there,
Who sayās it doesnāt work ?
Itās an SPI device, it needs the proper configuration is all , electrically ,no reason it wont work Unless the schematic is wrong?
There may be some pin duplication with the B2B maybe is possible But I doubt it.
Some posted the HAllow RF Board sending the Sense camera picture or video feed over that. so the LoRA board would be next , but itās BW limited so ā¦YMMV
GL PJ
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I agree that i dont see electricly why this would not be physically possable
I am assuming they are saying it is not b2b compatableā¦ but that is what the words say on the product page
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Hi there,
Ahā I see that fine print , Hmm Iām Suspicious of that. Iāll look at the schematic, I think @msfujino , did something on this.? canāt recall at the moment.
Iāll swap them around and edit the code YOLO is what they say , so thereās That
HTH
GL PJ :v;
This way
his Usb is going into the XIAO belowā¦ he has the Lora -B2B on top to S3 sandwitch in the picture
what you are wanting is the camera sandwitch with the lora on the bottom
PJ will get it in a jiffy
Plus
yes thats my config ā¦ esp32s3 sense on top - lora on the bottom with the esp32 male header pins plugged into the lora female socketā¦ Iām constrained in how I stack thanks to what this is going into as its also paired with a microphone vibration sensor and other stuff. I just wanted to get the lora working before I added the other items - those are all pretty simple - just power and the right io pin on the esp. The lora has been my sticking point.
worst case you could get 2 units one for camera and one for lora operations
The only problem i see is the IIC pins 4&5 are being used in this configuration
yes pj thats my stack - Im space constrained to that thanks to other sensors Iām including in a small space - vibration, microphone etc.
with the Lora on the bottom.. all you will have is UARTā¦ you will not have IIC or any other pins to work with.. all will be used upā¦ BUT you could check into
BUT these pins are probably some that are used by the B2b connector
Hi there
Yatzy!
=== Updated RadioLib Test for Wio-SX1262 on XIAO ESP32S3 ===
Pins: NSS=5, DIO1=2, RST=3, BUSY=4, ANT_SW=6
WiFi and Bluetooth disabled
Antenna switch enabled (GPIO38 HIGH)
Setting TCXO voltage to 1.6 Vā¦
Initializing LoRaā¦
SUCCESS! LoRa initialized fully.
SX1262 chip detected and ready at 915 MHz, SF11, BW125, CR 4/5, Tx 20 dBm
#include <RadioLib.h>
#include <esp_wifi.h> // Required for esp_wifi_stop()
#include <esp_bt.h> // Required for esp_bt_controller_disable()
// B2B pin mapping for Wio-SX1262 on XIAO ESP32S3
#define ANT_SW 6 // Antenna Switch (GPIO38)
// SX1262 Module Pins: NSS, DIO1, RST, BUSY
SX1262 radio = new Module(5, 2, 3, 4);
// -------------------- SX1262 GPIO pins (S3 pins FINAL) --------------------
#define LORA_DIO1 2
#define LORA_RST 3
#define LORA_BUSY 4
#define LORA_CS 5 //NSS
#define LORA_RF_SW1 6
void setup() {
Serial.begin(115200);
delay(2000); // Give serial time to connect
Serial.println("=== Updated RadioLib Test for Wio-SX1262 on XIAO ESP32S3 ===");
Serial.println("Pins: NSS=5, DIO1=2, RST=3, BUSY=4, ANT_SW=6");
// Disable WiFi & Bluetooth to free resources (optional but recommended)
esp_wifi_stop();
esp_bt_controller_disable();
Serial.println("WiFi and Bluetooth disabled");
// Antenna switch - set HIGH to enable RF path (important for SX1262)
pinMode(ANT_SW, OUTPUT);
digitalWrite(ANT_SW, HIGH);
Serial.println("Antenna switch enabled (GPIO38 HIGH)");
// Set TCXO voltage - critical for Wio-SX1262 (try 1.6 first, then 1.8 if fails)
Serial.println("Setting TCXO voltage to 1.6 Vā¦");
radio.setTCXO(1.6);
delay(200);
// Initialize LoRa
Serial.println("Initializing LoRaā¦");
//int state = radio.begin(915.0, 125.0, 7, 5, 0x12, 8, 17);
/*SF7 is "most compatible"
CR 4/5
Sync word 0x12 (public LoRa)
Preamble 8
TX power 14ā17 dBm is safe on most modules*/
// If you want Private uncomment below
int state = radio.begin(915.0, 125.0, 7, 5, RADIOLIB_SX126X_SYNC_WORD_PRIVATE, 8, 17);
// The 200 was the KILLER BTW, wrong Param. :+1:
//int state = radio.begin(915.0, 125.0, 11, 5, RADIOLIB_SX126X_SYNC_WORD_PRIVATE, 20, 200, 0);
if (state == RADIOLIB_ERR_NONE) {
Serial.println("SUCCESS! LoRa initialized fully.");
Serial.println("SX1262 chip detected and ready at 915 MHz, SF11, BW125, CR 4/5, Tx 20 dBm");
} else {
Serial.print("LoRa init FAILED with code: ");
Serial.println(state);
Serial.println("Common codes:");
Serial.println(" -2 = No module detected (B2B contact / hardware)");
Serial.println(" -5 = TCXO calibration failed (try 1.8 V)");
Serial.println(" -3 = SPI communication failure");
Serial.println(" -1 = General error");
// Automatic retry with TCXO 1.8 V
Serial.println("\\nRetrying with TCXO 1.8 V...");
radio.setTCXO(1.8);
delay(200);
state = radio.begin(915.0, 125.0, 11, 5, RADIOLIB_SX126X_SYNC_WORD_PRIVATE, 20, 200, 0);
Serial.print("Retry result: ");
Serial.println(state);
if (state == RADIOLIB_ERR_NONE) {
Serial.println("SUCCESS on retry! Use TCXO 1.8 V in main code.");
}
}
Serial.println("\n=== Test Complete ===");
}
void loop() {
// Idle - test runs once on boot
delay(10000);
}
GL PJ
You should be able to land-it from here 
Doesnāt seem to mind it being connected
Do us a Solid and Mark it as the Solution Please
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wow.. I might have to try this one for myself Good Job
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If you would like you can make an excelent forum post with all the details we need to know for future reference
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That is a Great Idea , On create a New Thread and Post and link any pertinent info back here .. Kind of cleans it up Too ! , I like It!
Add that Fancy GPS
Then we know where we are ā¦ LOL
GL PJ
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also it makes it easier to find in the futureā¦ like i did with the grove connectorā¦ i started a post to try to explain my thinking and i said i know i have covered this ground beforeā¦ but how to know where.. i think anyone can create a post in the excelent solutions sub areaā¦ but if for some reasion you cant just make the post and i will edit the locationā¦ i think what you already did is greatā¦ but you may rap it with a bow by summary what you did and what you found out IMO
still doesnāt work for me -
=== Updated RadioLib Test for Wio-SX1262 on XIAO ESP32S3 ===
Pins: NSS=5, DIO1=2, RST=3, BUSY=4, ANT_SW=6
WiFi and Bluetooth disabled
Antenna switch enabled (GPIO38 HIGH)
Setting TCXO voltage to 1.6 Vā¦
Initializing LoRaā¦
LoRa init FAILED with code: -2
Common codes:
-2 = No module detected (B2B contact / hardware)
-5 = TCXO calibration failed (try 1.8 V)
-3 = SPI communication failure
-1 = General error
\nRetrying with TCXO 1.8 Vā¦
Retry result: -2
=== Test Complete ===