@Yveaux Thanks. This is a battery run multisensor so ESP8266 is not an option. ESP32 is an overkill. I'm not that much familiar with other platforms so I suppose my only option is atmega1284 :((
@strangeoptics when using MQTT you could publish the messages persistent and have the slave request them on wakeup. That would implement some form of message queuing.
Well, it's more a bt distance monitor. It is only monitoring a single device, while you would need to keep scanning the surroundings at regular intervals and report all devices in range with signal level, then filter only the ones you registered
@mfalkvidd I may look at Anarduino - they come with RTC:
ATmega328, 16Mhz
LDO Voltage Regulator
128 Mbit flash memory
Real Time Clock (RTC)
64B RTC Static Ram
Tactile Reset Switch
Wireless Transceiver
Size: 33 x 22.8mm
@Tmaster I am not doubting the principle of increasing effective radiated power by way of relocating the antenna, or improving the radiation lobe in a set direction. The additional gain is important with weak signals at both send and receive ends, but at 50m it should not be an issue at these frequencies unless there are major attenuations to the signal. I have to guess you already have a dipole at the receiver ?
Sorry tp bump an old one but still haven't found a solution.
MQTT passes it as
mys-in/36/0/1/0/40 255,85,73
So the message payload can be passed directly to arduino as PWM values
I use the Easy Newbie boards for most of my projects. It is designed for the nRF24L01+, and it has space for the needed 3.3v regulator if you are running it at 5V. I don't know if he has a way of using it with the RFM69 radios, but you could check. Plus it has a small proto-board area for wiring your sensors. Kudos to @sundberg84 for the design.