Hardware

Thanks to both :) The reason I asked was some time back I was playing with a RasPi board and found the micro-usb to be very unreliable. JohnRob

@peerv I don't use one of those "red" adapters but mine does the same and it seems to be no problem. Just test it, at worst case there might be some communication problem but that's all and I don't think it should even actually happen.

Here is a very good page explaining the two methods of ultrasonic anemometers. http://www.dl1glh.de/ultrasonic-anemometer.html

@boylucky I don't foresee any difficulties doing that, except maybe efficiently powering a gateway from batteries. If you can do solar in the garden, then maybe that's your answer.

@dbemowsk said in Atmega 328p memory: @neverdie Great idea. I would just need another FTDI adapter and set up another MySensors instance on my Vera. If I have to order the nRF52, I can order an extra FTDI at the same time. Then I can take my time porting over things to the new gateway and phase out the old one as time and resources permit. I wouldn't buy the "dev board" you link above in this thread, it's basically a breakout board with a voltage divider, 2 buttons and 2 leds, you'll still need a programmer to use it and it doesn't seem to have any documentation or schematic so you would lose more time figuring out how to connect it than to (for example) solder a 5$ module from aliexpress on one of @NeverDie 's boards.

Usually the cheap regulators only have the regulator on board, so the cap is still a good practice to have it

Does anyone have a working version of this for 2.x?

@rejoe2 said in Servo, dallas and Nano...: use at least a capacitor as recommended in "Build". Forgot to mention that. I do use that capacitor as a standard. Thanks again

As you said before, you should be good to go

Thanks to all for your help. I think I have enough information to start my gateway (as soon as the hardware arrives). My first step will be to add a potentiometer to the gateway as a test input before tackling a sensor node. John

Just a quick additional information. While deeply testing the full functionality, I realized that if the NodeMCU goes out of main power AND the magnetic contact connected to D3 (GPIO 0) is closed, the loaded configuration is lost. I found out that usage of GPIO 0, 2, 15 is deprecated because these pin have a meaning during reboot. For this reason I moved my switch to D0 (GPIO 16) and modified accordingly the sketch of my previous post. Sorry

@knud-rishøj yes it's the same than led dimmer except you add a RC filter because the motor will be very noisy if you set on/off like it's done for the LEDs. Your circuit would be inserted between existing connection to motor and the motor. For the screw I don't know what it does, so you have to check the circuit to see how it influences the output voltage. Not such an easy project to start with IMHO ;)

@nca78 I created the revisions, but the status says waiting.

@gohan I live in Switzerland, but perhaps my place has more humidity than normal. It's not silly problems we're working on, we're learning all the time!

@rejoe2 said in Advice needed: Additional remark: your thread title is very general. Why not change it to "Recommendation for Motion detection (no PIR)?" Good suggestion! Done ;-)

The surface of the sensor appears to be a light-sensitive semiconductor. Maybe you can unscrew the little PCB from the case and see on the bottom. There could be some information there.

If you go around 6 or 7 uA you are still going for a long battery life (depending how often you are sending data)