Ebyte EoRa-S3 (E22-900MM22S module, ESP32-S3 + Semtech SX1262), as sold by
Rabbit-Labs as the RL-ReadyNode. Pin map confirmed against both the
Meshtastic CDEBYTE_EoRa-S3 variant and the MeshCore ebyte_eora-s3 board.
| Signal |
GPIO |
| NSS / CS |
7 |
| SCK |
5 |
| MOSI |
6 |
| MISO |
3 |
| BUSY |
34 |
| DIO1 / IRQ |
33 |
| RESET |
8 |
| TXEN / RXEN |
— (handled internally via DIO2 RF switch) |
DIO2_AS_RF_SWITCH = trueHAS_TCXO = false — this unit uses a crystal (XTAL), not a TCXO.
Meshtastic documents the EoRa-S3-900TB as XTAL. Enabling TCXO makes the radio
report online but never transmit or receive. (MeshCore sets a 1.8 V TCXO,
which appears to be a different hardware revision — do not copy it for this
board.)
| Function |
GPIO |
Notes |
| OLED I2C SDA |
18 |
0.96" SSD1306 @ 0x3C |
| OLED I2C SCL |
17 |
|
| OLED reset |
— |
not wired (DISP_RST -1) |
| Status LED |
37 |
single LED used for RX+TX |
| Button |
0 |
BOOT/strapping pin; only RESET is exposed externally |
| Battery ADC |
1 |
LiPo via 2×1 MΩ divider (see features.md) |
| Constant |
Value |
Meaning |
PRODUCT_EBYTE_EORA |
0xEC |
product family |
BOARD_EBYTE_EORA_S3 |
0x46 |
board model |
MODEL_D8 |
0xD8 |
868/915 MHz SX1262 variant |
These IDs are self-allocated for this port. If upstreaming to RNode CE / RNS,
coordinate them to avoid collisions with future official assignments.