Update and problem fixed! For everybody that will encouter this, the problem was at the sensor side because of the folder of the sensor! We created some metal brackets for it and they where exactly the same diameter. The fact that the mount squeezed the sensor made it return the lowest value. Just needed to adjust the hole and everything was ok!

I never noticed the 20 device cap. That won't do. What I am thinking of now, is to use EspHome and just dedicate a router to handle just that network - so kinda creating an IoT network without internet access and as standalone as possible. Using static IPs should make the response better too. Thanks for looking into this.

I want to thank @FcNanoLed. I had long thought about a serial gateway. This would be a way to add I/O to a linux computer. In the process of trying to help, I built up a linux machine running virtual box. In the virtual machine I ran Home Assistant The not well documented part of that was to connect the USB port of the computer to the virtual machine (settings-->USB-->USB Device Filters) (note that one can buy a refurbished PC for about the same price as an equivalently configured RPi) So thanks for the inspiration!

When connecting an accelerometer to your PC, consider its communication protocol (I2C or SPI) and the appropriate interface device, like a microcontroller (e.g., Arduino). You may also need additional hardware for voltage adjustment or signal conditioning, depending on the sensor’s specifications.

@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.

@dpcons MQTT sounds intimidating and looks imitimidating when you see all of the options available. Here's the scenario: You want to send a message. That's the -m option followed by a space and the message between " " the location, topic, is a tree, -t option, separated by forward slash / eg. MyRootTopic/MyTopicsSub/MyTopicSubSub It's as easy as that if your broker, the MQTT service (program) is on the same computer as the sending program. Usually it's not. Specifiy the location, the host, of the broker with the -h option followed by the host name or IP address The retain option, -r is important but explaining it is beyone the scope of this message Receiving, subscribing, to a topic is just the same, but you wouldn't have the -m message If you subscribe from the command line, the subscribe function waits indefinitely for messages published to the subscribed topic (unless you use the -C option) ^C to terminate the command. A tamotized device with the MQTT configured will create a number of topics on the broker. Home Assistant will see this automatically, if you have the Tasmota and MQTT Integrations installed. The MySensors MQTT gateway takes care of MQTT communication for a MySensors device. Again the MySensors and MQTT integrations. I use both. -OSD

25/25 Програма ChatGPT сказала: It seems like you're exploring the use of PJON with RS485. While RS485 is natively supported in MySensors, using PJON for collision handling can offer some interesting advantages, especially in environments where communication reliability is critical. PJON's collision management may be useful in bus systems like RS485, but it's worth considering whether the added complexity is necessary.

It seems that using an Ethernet PHY (like LAN8720) with the ESP32 in a MySensors setup requires a bit of extra configuration, including initializing the PHY using the ETH.h library and disabling the default Wi-Fi initialization. Interestingly, this setup allows for dual IP addresses, with one for the Ethernet connection and another for Wi-Fi, which can be useful in certain applications.

Maybe next summer the 10 years after party? I would still like to meet all of you guys in real person

@mfalkvidd Thanks, I'll try that.

@mfalkvidd Thanks for the info!

Thanks for looking. What arduino ide version are you using and what version of mysensors?

Old topic, I know. Did anything ever come of this? I'm also thinking it would be easy & cheap to get the espnow working as a transport layer. I found this: https://www.mysensors.org/apidocs-beta/classESPNOW.html But it goes above my head and abilities when it comes to code.

@OldSurferDude yeah, 10 virgin nodes powered up at the same time is a bad idea I seem to remember reading somwewhere here warning aginst that. If yu have node ID trust issues with Mysensors you should move your address to different locaion as 0x00 is used by Mysensors... just sayin..;)

@CodeGarage What I want is a lion powered Sensor if possible. And that in a case I can stick to the door frame. As I cannot screw or drill into the doorframe. But I have no idea how much current that draws.

Thanks for the idea, i will look into it soon, will let know how it goes..