I had some spare time and all parts so decided to assemble ampere meter.
Firstly, the sketch has to be changed. The lib Button.h does not exist (it has been renamed). It has to be changed to JC_Button.h. This has to be added to setup {}:

myBtn.begin();

in order for the button to work.

My question is this - reading are jumping like a yo-yo despite having a separate power supply (power bank). After calibration, reading maybe +30% or -30% off needless to say that its drifting dynamically. So constant current of 120uA is read +90 or +150 jumping up and down. Is this the way this meter is supposed to work?

@nca78 Exactly the same pin of the IC can be connected to the next pin (VCC) to change the refresh rate.

https://github.com/iforce2d/thrustTester/blob/master/README.md

@vladimir If you do not see a problem, why not dismantling it and connecting a relay to simulate a button press?

I have automated a coffee machine to switch on/off at a certain time to preheat, but I still fail to understand why would anyone need a smart kettle remote control.

@vladimir I do not understand the purpose of switch a kittle remotely. If there is no water, what would you do?

Additionally, I think you'd find very little in internet on your topic. It required hacking into existing Xiaomi electronics. If you want to do that, you need to dismantle the kettle and reverse engineer it.

Just to compare these are received today from digikey:

Here I have an example of Chinese (AliExpress) sources atmega328p:

I have tried to solder a few of these, but none of them is working properly. I can upload the bootloader, but cannot upload any sketch.

@neverdie this is my observation as well that the sensor is showing strange values in the beginning but gradually they become more and more accurate. I have not tinkered long enough to have good viable results.

@gbsmith said in How to sleep the Moteino M0?:

https://github.com/gb53smith/Public/blob/master/MySensors_BME280/MySensors_BME280.ino

You are using the latest Felix's addition to Moteino family. It is cutting edge and I do not think anyone here has got Moteino M0 yet. Excellent work-around for sleep. What kind of current are you getting while properly sleeping?

@tbowmo Now I want to build one :-)))

@mfalkvidd Just a tip. You may be better of buying this one:

https://www.amazon.co.uk/KKmoon-Portable-Digital-Oscilloscope-Interface/dp/B07C4RTXF6/ref=sr_1_3?ie=UTF8&qid=1534094879&sr=8-3&keywords=oscilloscope+portable

Much better spec and the price is the same. AND you can save tons of time as it does not require soldering.

KKmoon DSO 112A TFT Touch Screen Portable Mini Digital Oscilloscope USB Interface 2MHz 5Msps

£45.99

1 available