all RSSI-dat test run in 3 meters wifi connection distance, same environment.
stock board
test code I2C-dat is running properly for ESP32-S3-dat
- 49 Dbm
XXSR69 series External antenna U version RSSI test
un-finished yet
XXSR69 series RSSI test
more unsort modules
middle == ESP32-D0WD-V3 (revision v3.1)
- 49 Dbm
right == ESP32-D0WD-V3 (revision v3.1)
Connected to ESP32 on COM31:
Chip type: ESP32-D0WD-V3 (revision v3.1)
Features: Wi-Fi, BT, Dual Core + LP Core, 240MHz, Vref calibration in eFuse, Coding Scheme None
Crystal frequency: 40MHz
MAC: 20:e7:c8:9f:30:3c
Stub flasher running.
Warning: ESP32 has no chip ID. Reading MAC address instead.
MAC: 20:e7:c8:9f:30:3c
Hard resetting via RTS pin...
- 52 ~ 53 Dbm
left == unreadable == defective unit == can not upload code
Connected to ESP32 on COM31:
A fatal error occurred: Invalid head of packet (0x65): Possible serial noise or corruption.
close look
other more old versions
X1
- 58 Dbm
X2
- 93 ~ 96 Dbm
add external antenna
- 48 ~ 53 Dbm - bio-side wing
- 44 - 50 Dbm - pcb antenna