Hi All,

My project has 1 gateway + 5 node with temperature sensor and it is installed in orchard.
All node is within 20meter from gateway but seems there are a lot of packet loss.
I bought module from aliexpress which is mysensors link (https://www.aliexpress.com/item/1sets-Special-promotions-1100-meter-long-distance-NRF24L01-PA-LNA-wireless-modules-with-antenna/32341792715.html)

Communication was fine in the office but when I install in the orchard it loose some data.

I did try a lot of things on the web.
Here is the list I have been try to solve the problem but no luck yet.

1. 800mA 3.3V LDO saperate Power to the module
2. 2x 10uF LDO in/out
3. 100UF Al Cap, 2x 10UF ceramic Capacitor on base board
4. 100uF , 2x 10uf On the module
5. warp the module with tinfoil
6. bigger antenna ( a little bit improved)
7. 3M corded antenaa ( no difference)
8. change mysensors config to MY_RF24_PA_LEVEL RF24_PA_MAX ( no difference)

Is there any other option?
It's really strange, the module specification is 1km but even not working properly within 20meter..
I don't think there is interference because it is installed rural area..

Sorry for bad English;;

I did success with MySBootloader 1.3 beta 3 (https://github.com/mysensors/MySensorsBootloaderRF24 )
It works both arduino and OTA firmware upgrade however it takes longer to boot up (means switch to firmware) about 3-5seconds.
I'm using MYSensors 2.1.0 and MYController (http://www.mycontroller.org) on arduino pro mini 8Mhz 3.3V.

How many sensor you try at the same time?
From memory When I do firmware update for 3-4 sensors, I have to change "Tx message processing delay" to 300ms.
If it's shorter than 300ms, keep rebooting some stage.

I didn't use MYScontroller but probably it has similar setting.

@gloob
Arduino doesn't matter up to 5V so I don't mind for arduino.
If I feed same power to arduino, I need bigger LDO and also less efficiency.

@fleinze

I keep reading the article.. interesting
The module which on the link is too expensive for my project;;

@gloob
nRF module should not use over 3.6V and Li-Ion battery is 4.2V when it is full charged.

@flopp
Gateway : ESP8266 ( use 3A switching step down power module)
Node : Arduino pro mini 3V ( Arduino use battery power directly and nRF24L01 use 3.3V LDO 800mA one with 0.3V drop down )

@MiKa
Device is installed in rural area. There is only one wifi. I don't think there is jamming or interference..
I don't have RF scanner. If I couldn't find any other solution , probably I need to build RF scanner to check it..

@flopp

Whole system is Li-Ion battery powered system with solar.
Gateway has 3S2P Li-Ion battery with proper solar panel. Battery voltage never go under 11V.
Node has 1x18650 Li-Ion battery with small solar panel.
Node goes sleep mode for 10 minutes then wake up and send data within 10 second.

@flopp
At the first time I use default antenna but it was same issue so I bought exactly same long antenna. It make a little bit better but not perfect..
I knew what you are talking about. It wasn't normal so a little bit expensive compare to normal wifi antenna.

Thank for your concern.

@flopp
I use nRF+LNA+PA on both.

@fleinze
Thank you for your quick response. Well I use custom PCB which has plenty of GND area on the board.
Anyway will keep think how to make better ground for the module.