@nagelc said in New Setup for Home Environment Monitoring – Using NRF24L01+, Arduino Pro Mini, and BME280: bme280 I read somewhere that the temperature sensor on the BME280 is sort of an afterthought. I did a few experiments comparing them to the DHT11/12/22 and found them only a little better. (Take this with a grain of salt, maybe you'll want to do you're own experiments.) I did do a lot of experiments with the DHT's and they really suck. +/-2°C Which turns out to mean +/-2°C offset (component variation) and +/-2°C measurement: +/-4°C from what the temperature actually is. My experience, yours may be better. Please post your experience with OTA. I haven't tried it on Arduino's but it's awesome on ESP8266. I hesitate with Arduino's because I had some erratic behaviour running Arduino's when pushing the memory limit. I, too, use the MQTT data transport to Home Assistant (HA) and I find that excellent. Getting data from HA is a bit tricky, but do-able. I have a flow meter and use HA to store the last read; meaning, if there is a power failure, HA sends the last read on Arduino boot. I don't use the EEPROM because that has a spec of 100,000 writes which the meter would do in about a year, thus, necessitating a new Arduino. I truly appreciate you sharing. Thanks! -OSD

@BearWithBeard Wow, thanks for this detailed answer! Today, I received an answer from Ebyte: Yes, because of the shortage of chips, E01-ML01D is temporarily out of stock. It will be available in next mouth, if you have a purchase plan, please book as soon as possible. @skywatch So, there is hope :-)

@Ron said in 💬 Capacitive Soil Moisture Sensor: @Puneit-Thukral Thanks. I am not quite sure, so correct me please if I am wrong, but I think I am already using the MiniCore bootloader with platformIO. Or do I need to configure to explicitly use the MiniCore bootloaders? Also I have set BOD to disabled as I read somewhere that no BOD can also save battery. hi I'm not sure, but I believe I'm already using the MiniCore bootloader with platformIO. Please tell me if I'm incorrect. Is it necessary to set the MiniCore bootloaders explicitly?

@mfalkvidd the one that stops at 2.7v I once broke my head over it, then it saw I was looking at the automotive datasheet...

@TRS-80 There's an argument for putting two different value capacitors near the nRF24L01 (or whichever radio you're using). A 0.1uF bypass cap to help filter out noise, and a higher value cap as insurance against possible battery ESR and/or inductance from possible long battery leads/traces. For example: https://www.openhardware.io/view/480/Compact-nRF24L01-Pro-Mini-Bottom-Shield#tabs-design

@The-Grue: Don't be embarrassed by it...pretty sure you are not the first one that fell for this trap and certainly not the last one. Hopefully also other readers on the forum can benefit from your (bad) experience in this way. Thanks for reporting back and good to hear that some of your trust has returned towards the nrf24 and your part shops with a "good name" :slightly_smiling_face: .

I also have project for mini. The project have pads for battery, battery protection IC, LIPO charger USB for charging... battery voltage measurements.... But the project is not released yet, because high temperature during charging.

Please add the documents required by the CERN license used.

Hello, i'm making some progress; received the components this week. Unfortunately it doesn't work... yet For now i have SanityCheck failure in to logs. I'm afraid my soldering of all these little components is not good. I tested with a multimeter the 4 pins and i have continuity on one of them but maybe not the others so i guess i will have to try remelting all these small regulators ???

@tiana I have not used it, but it is possible to create different revisions. See https://www.openhardware.io/view/4/EasyNewbie-PCB-for-MySensors#tabs-revisions as an example.

@rvendrame sorry, I did not see your comment. Yes, it is VERY valuable. Thanks a lot

Thank you @mfalkvidd! I have been busy and had many issues to figure out for myself, but I still can't understand how binding with openHAB works. How does the information from nRF24 get to openHAB? I have MySensors Binding add-on installed in openHAB. I would be very grateful if someone could help with this last step. After this my first little sensor will be ready to go live.

No, I didn't seriously consider it. I have a minimal programming circuit with ZIF-sockets to program DIPs, but those are easily removed from a circuit (assuming they are put into sockets and not soldered) in case they need to be reproprammed . Doing this with a TQFP seems like a one-way road, so I think a way for in-circuit programming should be provided regardless. I mean, I didn't have to reprogram my first revision nodes so far, but I might want to add signing support later on or upgrade to MySensors 2.4 or 3.0 for some reason, so it should definitely be possible, but I'm not too worried, if the programming process is a little cumbersome, if the SOICbite experiment doesn't work out.

@jkandasa Any news here? (still have my rfm69 Boards here to check of the range is much better)

Is this design for some existing enclosure?

Awesome project, I wish I made something like this. (I actually wanted to make something like this when I was in school) Very clean and nice presentation and realization, with a lot of attention to details. All is very realistic, I can imagine that it took quite some time making it. Thanks for sharing the details!

It depends if you want to use an antenna with some gain or not

@pihome few months tops, I think.