There is a collection of techniques that can reduce energy consumption of the Nano. (eg, remove power applied LED) I've read about µA's during sleep periods. The ESP-12F clearly achieves this and can be a MySensors by adding a radio. Note that if WiFi is not disabled, savings are probably lost because the WiFi is energy hungry. This would have me leaning towards MySensors rather than ESPHome. My experience tells me that the Nano is more durable than the ESP. Another tip: If you're going to put your sensor in a harsh environment, after you have assembled it, "paint" it with electrical lacquer.

@mfalkvidd After giving this some thought, wouldn't that imply that at sufficiently low flow rates, the the meter would not detect any flow. A leaky faucet? While I'm pretty sure that my pump can't pump that slow, the pressure would drop, eventually triggering the pump to start. A leak could be detected by periods of pumping that are very short? An experiment could be run to see how much water must be released to trigger the pump to start. The time between pumpings could then be used to determine this flow rate. And after reading this, I see I have to much time on my hands which could be used to address more pressing issues.

Stainless steel probes are a solid choice for durability. If you're thinking about power efficiency, integrating a sleep mode could really stretch out battery life.

Hello, I am reviving this as I upgraded my kernel to 7.0 and now have communications issues. I discovered that I had to force port speed when opening it up to the right speed, then it communicates a bit then nothing... driver is ch341 any idea ?

Nice work @Kokosnoot I think you could use #define MY_RFM69_IRQ_PIN 2 #define MY_RFM69_IRQ_NUM digitalPinToInterrupt(MY_RFM69_IRQ_PIN) This should convert the pin number to interrupt number automatically.

@KevinT should be one of these https://github.com/mysensors/MySensors/pulls?q=is%3Apr+esp8266+sort%3Aupdated-desc+

Hi, The sensor has a lux setting you can adjust to block triggering during daylight, but I just add an "after sunset" condition to my automation script to prevent daylight triggering. [image: 1778010220665-pir-settings.png] On AliExpress: PIR no base PIR with base

nice! I'm happy that there is another radio to use

Start with a simple communication method like Bluetooth or Wi-Fi on your sensor platform, use something like Arduino/ESP32 with a mobile app (e.g., Flutter or React Native), send data via APIs or Bluetooth, and design your platform to expose readable data and basic control commands for the app.

I have a very well working setup with jeedom & mysensors. do you have access to the logs in debug mode ?

I get what you mean. One thing I still appreciate with MySensors is the control over how nodes communicate and behave, especially for simple, purpose-built setups. It’s not always the quickest to deploy, but it can be more predictable long-term for small, dedicated systems.

Around 30–50 N·cm holding torque is typically sufficient for most focusers, and a standard NEMA 17 with microstepping (e.g., 1/16 or higher) usually provides enough resolution without needing a gearbox, though 0.9° motors offer slightly finer native precision than 1.8°. To reduce vibration and resonance, use lower current, acceleration ramps, and a flexible coupler, and for long sessions set the current just high enough to avoid missed steps while lowering holding current to manage heat.

With debug on I can conform it works just fine. So far I can see all sensors reporting and all actuators respond without any problems. Accept for one, but that radio is in a cage of Faraday and I knew it would need a repeater close by. Next step making the shield for the rfm69, so that I have one form factor for my Gateways and Repeater(s). But it has to wait until after Eastern. as it's the same for adding an extra decoupler capacitor.

As we all know, the nRF24 works pretty well, but there is a lot of device-to-device variation. This would be a nice thing to have when debugging the network. @juliefen will you be creating a github project with schematic, board layout, code, construction tips, theory of operation, calibration and operating manual, examples, etc.?

Can't give you a 100% answer. I've noticed with FETS I sometimes have a low leak Voltage. But I've seen Chinese designs that gave a negative voltage when the FET was turned off haha

I have learned the hard way, many times, "If it's not broken, don't fix it". MySensors fills a niche, very low power, very low cost, sensors (albeit, DIY). The range is about the same as Bluetooth. The data is usually a boolean or an integer. So let us not say, abanddoned but at a development plateau. A mature technology that still has legs.

This is really not a MySensors topic! Just by the way present you request indicates that you are way over your head. I have a degree in electrical engineering, the study of electrical energy generation, transmission, distribution, etc. and substation design would take me years of study to be competent. Any discussion about electrical energy delivery start with safety. Fuses and breakers, basically, but these have to be able to break 1000's of amps ... not a trivial task. The trick is to bring down the circuit without damaging other equipment on the circuit. Just detecting a fault is a doctoral candidate dissertation. Basic components: transformers, breakers, switches and a lot of instrumentation. Voltage levels are pretty much already defined because the equipment available is already set for those levels. Transformer basic rating is KVA, input and output voltage. There's a lot more to it ... a lot more. As far as books for beginners ... I can't imagine that there are any. There are probably books for people who have been in the industry for more than a few years.