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BT832X PA / LNA

nagelc last edited by nagelc

Has anyone developed a PA LNA driver for the BT832X (Fanstell NRF5 module)? Works quite well without it, but wondering if could be even better.
@NeverDie , you had a remote control using PA. Was there any additional code for that from stock MySensors NRF5? Did you ever do anything with the LNA part?
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@NotYetRated Hope you'll find good uses and a fun time while building your sensors.
Status of my rv(camper) home automation system 2020-2025
My Project • • fsgraz

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@fsgraz Did some testing Today and my RFM range is over 80 meters node to node, with no long range antenna. That will be my next test, just waiting for a shipment from China to arrive. I did how ever notice an extreme improvement when I connected the gateway through a USB hub and then started to dig through the forum. @AWI once wrote about using an external PSU to power the long range NRF PA/LAN. I'll try that this weekend as connecting it to they USB port of my PI extended the range to 20 meters Node to Node.
Soil moisture sensor for house plants
My Project • soil moisture soil soil sensor plant • • Łukasz T.

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I think the comments you make are good. I do have a question about the removing the regulator. I assume you mean the 5V to 3.3V regulator. I connect to the 5V and I see lot of variation in moisture readings due to the variation in the output of the power supply (solar panel/stepdown). I have a calibration routine for that. The voltage can go as high as 4.2V, which I believe may be bad if I connect the power supply to 3.3V. Of course, this is not a concern if using two 1.5V batteries. With batteries, the moisture reading would be more consistent over a day. Lot of advantages there. I just don't like changing batteries and I really hate it when they leak. I have every reason to believe that my power supply will last 10 years and I am fortunate to live in a place with consistent sunshine . Someone replicating my project will have to take this into consideration. My design easily accommodates a different power supply. And my power supply could be used in other projects. Resistive vs Capacitive sensor. I'm glad you report good results. This gives people options. Water moisture: I've had good experience with "spraying" the Arduino with clear electronic coating and sealing the enclosure with liquid tape. -OSD
Radar motion sensor
My Project • • suresh sharma

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Soil Moisture Sensor Powered by solar charged battery
My Project • battery home assistant low power eeprom solar calibration • • OldSurferDude

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@OldSurferDude I use this. https://www.homedepot.com/p/Orbit-Solenoid-for-Battery-Operated-Timer-57861/203151515 Instead of having to hold the valve open, i can just pulse it. I use a simple motor controller to pulse it and when i need to close it, pulse it in "reverse". That way I could use a battery and if it only opens once or twice a day it's only a half a second or so of draw off the battery.
Door chime
My Project • • Paul Scarbro

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@Paul-Scarbro There are multitude of solution, but since we are in MySensors Land, let's do a MySensors solution. You'll quickly see that doing that adds a lot of overhead. We'll use an Arduino Nano or RF Nano if you're going to go whole hog. It can be run from 3.3V or 5V DC, not AC. The reed switch would be connected to an input of the Nano and one of the outputs would drive a relay. The relay would drive the chime. Your C++ program would be something like: #define inputButton 2; // connect reed switch here #define outputRelay 4; // connect relay to this pin see MySensors Relay example #define RELAY_ON 1 // GPIO value to write to turn on attached relay #define RELAY_OFF 0 // GPIO value to write to turn off attached relay void setup() { pinmode(inputButton,INPUT); pinmode(outputRelay,OUTPUT); // put your setup code here, to run once: } void loop() { // put your main code here, to run repeatedly: if (digitalRead(inputButton) == 0) { digitalWrite(outputRelay,RELAY_ON); wait(2000); // wait 2 seconds digitalWrite(outputRelay,RELAY_OFF); // now wait for door to close while(digitalRead(inputButton) == 0) ; //does nothing until reed switch opens } } There are some subtleties that I may have glossed over, but this is the gist. By looking at the MySensors Relay example, you'll see how to integrate this into a MySensors environment. That's where you'd want to get the RF Nano. I've made the assumption you're familiar with the Arduino IDE and you've looked into the MySensors environment.

BT832X PA / LNA

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BT832X PA / LNA

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Welcome Announcements • • hek

Status of my rv(camper) home automation system 2020-2025 My Project • • fsgraz

Soil moisture sensor for house plants My Project • soil moisture soil soil sensor plant • • Łukasz T.

Radar motion sensor My Project • • suresh sharma

Soil Moisture Sensor Powered by solar charged battery My Project • battery home assistant low power eeprom solar calibration • • OldSurferDude

Door chime My Project • • Paul Scarbro

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Welcome
Announcements • • hek

Status of my rv(camper) home automation system 2020-2025
My Project • • fsgraz

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My Project • soil moisture soil soil sensor plant • • Łukasz T.

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My Project • • Paul Scarbro

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