General Discussion

@sebex this is purpose or the "ABC". They neeed to be exposed to outside air at regular interval (usually at least once a week) to recalibrate themselves and stay accurate for years.

Here is a review of this https://youtu.be/55tgEMTumGo Not sure why, it YouTube has started suggesting this kind of videos after I read this post

@neverdie said in Anyone here tried/using either Dragino LoRa gateway or some other LoRa TTN gateway?: Are you sure? I'm glad I asked, because from my reading I had thought that FOTA had been baked into the LoRaWAN specification for over a year now: https://lora-alliance.org/in-the-news/lora-alliancetm-enhances-lorawantm-protocol-new-specifications-support-firmware-updates I am sure, but I am unable to find a reference. Having it in the spec is not the same as having it implemented in the infrastructure. If you deploy your own TTN v3 stack (most of it is open source), you can probably get it to work. I've had on my todo to do this for a long time, but other things have priority. You can also but a commercial license for the commercial version: https://www.thethingsindustries.com/technology/pricing So far I have only seen one implementation of fota, and that's by arm, which has a hard requirement that your firmware needs to be built on arm mbed. https://github.com/ARMmbed/mbed-lorawan-update-client

@NeverDie I don't remember exctly, but voltage requirements for mcu only might be the same (approx). On modules, it can differ, depending on external spiflash&ram voltage requirements. I thought you were talking about the esp32-s2, announced a few months ago, which has usb and few more IOs for example but it's single core. the simple S version is maybe used as coprocessor, like on particle boards, if I'm not wrong

@bjacobse Thank you :)

Though Fluke 115 could be a good option if you have enough budget but Fluke 101 is also good basic pocket portable digital multimeter with reasonable price.

@sola Thanks for your prompt feedback.

@tmaster great work!

@brianmichalk Do tell us more. Sounds interesting.

You'll want a valve that's certified to meet NSF 61 standards, preferably stainless steel. Anything else, especially if it's non-certified brass, has a significant chance of lead and/or other hazardous contamination that you won't want leaching into your drinking water. I recently replaced the solenoid on my Miele dishwasher with one of the US Solid electrically actuated ball valves (stainless steel, NSF 61 certified), and it's working fine. Total overkill for this application, but US Solid claims the mean-time between failure is something like 100,000 actuations, so hopefully I'll never have to touch it again. In contrast,the Miele solenoids fail about every 4-5 years, and replacing them with the same part is a total pain the neck. Besides, the Miele part would have cost 5x as much! Go figure.

@mickey Yes you can drive the motor directly from the esp32-cam module, but with MySensors you can put in deep sleep and wake up the esp32 on demand (pir, timer, etc...) for eample with an automation managed by the controller. In fact the esp32-cam, at least with the esphome firmware, is always active and the module become hot after few minutes. With an additional controller more power friendly you can turn on the module only when necessary.

@mfalkvidd If you look close, I'm only sending as a response to a request from the "controller". But I'm still wrong for insist getting the received value from the property bValue. Seems logical to me that it would contain the boolean value instead of a byte size or whatever. If I had used the method ".getBool()" I would had the boolean value. Although, if the controller sets a boolean, the node still gets wrong values, so you still have to transmit an integer 0/1. I don't like it, because it forces processing all the values as integers in node-red, for example. As usual, I'll leave this, my stupidity, behind in the hopes it serves to anyone else. :sweat_smile:

Hi, you can try these power supplies: https://www.aliexpress.com/store/group/UPS-Charge-Function-switch-power-supply/1242857_501520362.html?spm=a2g0o.detail.100008.25.56f87402HSB2Og The are for 12V, but also support an external battery. I have two that work very well.

@fullwavebridge Best to post full code, wiring diagrams and photos first - also tell us what you want and what you are getting. - Then you might get somewhere...

@gohan said in Multimeter recommendation?: It is a common issue I see in these small cheap meters. There is always the openhardware current meter for what you are suggesting Sure but there are other multimeters with a common plug between mA and uA so you can just change range on the selector and you don't have to cut the power to your node during that switch.

@bjacobse answer to myself, it appears that the chep multimeter types with Current clamp, is only capable of measure AC current, I need also to measure DC current (Then I can measure if my my diesel glowplugs are working, without removing anything), so I bought this fairly cheap add on. It provides 1mV/A https://www.aliexpress.com/item/33028995595.html?spm=a2g0s.9042311.0.0.115a4c4dFflk4A How to measure with current clamp your glowplugs: (Not my video, but it gave me some knowledge): https://www.youtube.com/watch?v=dz1Gt2IfC_I