LYWSD03MMC-z external power and signal power

[tech1977]

Hi,
I made a modification to power the sensor with an external 3v power supply, since I don't have battery drain problems it is possible to increase the signal performance ?

[pvvx]

Rebuild the firmware:

1. Add to "board_lyws03mmc.h":
   Maximum when using VANT:

#define RF_TX_POWER_DEF		RF_POWER_INDEX_P3p01dBm

Maximum when using VBAT:

#define RF_TX_POWER_DEF		RF_POWER_P10p46dBm

See all RF_POWER_INDEX in file: ZigbeeTLc\SDK\platform\chip_8258\rf_drv.h

2. Rebuild:

make -s -j clean
make -s -j VERSION_BIN=_v0125 PROJECT_NAME=Z03MMC POJECT_DEF="-DBOARD=BOARD_LYWSD03MMC"

[tech1977]

thanks for the reply but I am not able to rebuild the firmware :(

[pvvx]

1. Use a ZigBee coordinator with a chip with a better reception level. Old chips have a poor range in terms of reception level.
2. The antenna in LYWSD03MMC and other devices has a directionality -> change the position of LYWSD03MMC or coordinator.
3. Zigbee communication is two-way. -> Set a higher transmitter power on the router or ZigBee coordinator.

[tech1977]

As a coordinator I use SLZB-06M, it should have good power am I wrong?
congrats again for the firmware !!
so you say that rebuilding the firmware is useless?

[tech1977]

Rebuild the firmware:

1. Add to "board_lyws03mmc.h":
   Maximum when using VANT:

#define RF_TX_POWER_DEF		RF_POWER_INDEX_P3p01dBm

Maximum when using VBAT:

#define RF_TX_POWER_DEF		RF_POWER_P10p46dBm

See all RF_POWER_INDEX in file: ZigbeeTLc\SDK\platform\chip_8258\rf_drv.h

2. Rebuild:

make -s -j clean
make -s -j VERSION_BIN=_v0125 PROJECT_NAME=Z03MMC POJECT_DEF="-DBOARD=BOARD_LYWSD03MMC"

would you be so kind as to send me the latest modified firmware with the signal at maximum? unfortunately on some devices with low signal or disconnections ..... thank you very much