Getting Started with micro:bit Part 4: Remote Burglar Alarm 

According to the edge connector info page (tech.microbit.org/hardware/edgeconnector_ds/), you can have up to 3 pins sink/source up to 5 mA. Other than that, I believe it's 0.5 mA per pin. As far as I can tell, the pins are directly connected to the CPU, so it's not a lot of current to work with. If I recall correctly, the .hex file with the latest date stamp is the one that's used when you upload multiple .hex files. I've heard of custom scripts that will look for .hex files in your downloads directory and automatically copy them to your MICROBIT drive. Other than that, the mu micropython editor (codewith.mu/) has an automatic uploader.

Thanks. Thats weird that some people connect speaker directly to it, like here - www.suppertime.co.uk/blogmywiki/2016/02/microbit-sound/

Man, you are so lucky, mine is only 1 year old and I don't know what technology will bring when he is 7

:)

www.sparkfun.com/products/17287

oooh

I didn't test the extent of it's range, but I suspect that it would only work a couple of rooms away. BLE is a low-power technology, so I wouldn't expect much more than that.

Hey! The micro:bit's radio can reach around 21 meters (70 feet) over an open area(given it isn't disturbed by other electronics). So I belive two houses is a bit to much(as Shawn also said). Though we tested it's range with a remote controlled car in our office and it easily reached 15 meters. Hence the possibility is there :)

I saw your comment below first, but here is my introduction to using MicroPython with the micro:bit (in case someone else is looking for it :) ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-ZIW_6rxYNBg.html

We sell the speaker, wires, and other components at SparkFun: www.sparkfun.com/products/7950. You can see if there is a company that sells SparkFun parts you need in Europe: www.sparkfun.com/distributors

You can very easily use your headphones, just don't put them in your ear.

It is a small metal speaker (www.sparkfun.com/products/7950) that works with a square wave. Because there is no piezo element, it's not really considered a "piezo buzzer." That being said, it's tuned for 2kHz, so it's really meant to be used like a buzzer.

Cool. Thanks for that

Agrred

This method for teachers teaching in school..and for amathur like me. For advance learner and uviversity students should use advance language like java, c++ etc. Thanks to developer for introducing interesting and better GUI for better understanding in programming.

Yes but keep in mind the microbit is meant for year 7s in the UK which is when your 11 so this is to teach basic coding concepts and to Keep younger people interested in programming because let's be honest if you tried to teach a kid to program through print statements in python many lose interest although I understand your frustration I want to know how to do this using the microbit python module

After talking to some teachers, it seems that right around 7th or 8th grade (in the US) is where many students want to transition from graphical programming (like Scratch or MakeCode) to text-based programming. For using Python on the micro:bit, I threw together a couple of videos on how to get started with MicroPython: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-ZIW_6rxYNBg.html