@iguaan Try to set MY_RF24_PA_LEVEL to RF24_PA_MIN on gateway then use NRF24L01+PA+LNA module - in my case the OTA begin work perfect!

May be it's help you - in my case with Winbond W25X40CL changing code in SPIFlash.h solve the problem with CRC error:

i change this:

#define SPIFLASH_BLOCKERASE_32K   0x52        //!< erase one 32K block of flash memory

on this:

#define SPIFLASH_BLOCKERASE_32K   0xD8        //!< erase one 64K block of flash memory

@feanor-anglin said in Newbie wants to do everything wired:

If you like it, please feel free to contact me. We've made some significant progress, which is not published yet.

I am also intresting in implementation of RS485 in my MySensors network, and i like yor hardware and use some of your ideas in my project Simple compact RS485 node (ATmega328 + MAX485) ,

You can use anything like this:

https://electronics.stackexchange.com/questions/129463/switch-on-computer-with-microcontroller

i am using just one PC817:

@yveaux Sorry, i don't test the range of nodes - plan to use in the 2 floor house of 60 meters.
But you opinion is correct, this design is compromise of size, pins count and range degradate.
This is prototype, work good about 1 year:

As i see, two first module is impulse, but third - linear?

@kiesel Great work!

1. 5V connected through diode to protect of polarity revers
2. MB = Motherboard, you right
3. First need to connect power button from front panel, second to connect to "Power Switch" on motherboard. This allows power on both from power button and Arduino.

You disign is absolutely working!

Very dangerous - too small gap between AC230 and GND:

@kiesel Sorry friend, I guess I confused you a little ..
The diode is needed so that, when powered from the contacts on the motherboard with 5V, it does not damage my arduino, that's all
Have a nice weekend to!

like this

send(msgPir.setSensor(Number).set(State?"1":"0"));

@Flyer Do you can ping the gateway on it IP?

@skywatch May be you right - the distance between node and gateway so small..
But how can i solve the problem of unstable link with node on distance about 5m and more with wall between node and gateway?

@skywatch Yes, FOTA works with both modules, it is one gateway, i just change one module (black) to another (Ebyte), distance between gatway and node aprox 2-3m.
I want to find a solution to increase distance, because of some of my node work unstable..

@skywatch The peoblem is in not working OTA with NRF24-PA-LNA, if the RF24_PA_LEVEL parameter has not the RF24_PA_LOW value..
It's refers to Ebyte module too..
The power supply is the brand Samsung power adapter for the tablet and the LM1117 3.3V with 100uF capacitor.

@skywatch I am using this module

and like this

@Yveaux I want to try solve the problem with NRF24 module with PA-LNA..

@mfalkvidd you right, this define don't changing the register..
I find deeper and what can i see in datasheet:

and i see in RF24.h:

#define RF24_RF_SETUP (uint8_t)(( ((MY_RF24_DATARATE & 0b10 ) << 4) | ((MY_RF24_DATARATE & 0b01 ) << 3) | (MY_RF24_PA_LEVEL << 1) ) + 1) 		//!< RF24_RF_SETUP, +1 for Si24R1 and LNA

May be need change in this define?

UPDATE: As i see, in RF4.h used HCURR = 1:

#define RF24_RF_SETUP ..  // !< RF24_RF_SETUP, +1 for Si24R1 and LNA

It has long been known, that the NRF24 module with PA-LNA work strangely, if the RF24_PA_LEVEL parameter has not the RF24_PA_LOW value.

I decided to study the issue a little and found such a parameter in the registers of the NRF24 chip settings - "LNA gain":

"6.5 LNA gain
The gain in the Low Noise Amplifier (LNA) in the nRF24L01 receiver is controlled by the LNA gain setting. The LNA gain makes it possible to reduce the current consumption in RX mode with 0.8mA at the cost of 1.5dB reduction in receiver sensitivity.The LNA gain has two steps and is set by the LNA_HCURR bit in the RF_SETUP register."
(see nRF24L01 Single Chip 2.4GHz TransceiverProduct Specification)

I see this setting in RF24registers.h:

#define RF24_LNA_HCURR		(0)

May be here I may use "1" for module with PA-LNA?

#define RF24_LNA_HCURR		(1)

@kiesel Yes, you rigth - between 3.3V on mainboard and VCC of arduino!