Best posts made by cabat

@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

@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:

You can use anything like this:

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

i am using just one PC817:

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

@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) ,

@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!

@gryzli133 I have a number of MySensors devices using RS485, it would be interesting to try to run PJON protocol over RS485, it seems like there is such an opportunity, but I could not figure out how to use it in the MySensors library.

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!

@hypnosiss you may be interested in this https://forum.mysensors.org/topic/11814/rs485-transport-ack-support/6

@gieemek Great thanks for you solution, it's work perfect!!
I just change the timeout for resend message to 250ms.
Using now in 6 my RS485 nodes.