Electrical Engineering Stack Exchange
Electrical Engineering Stack Exchange

Questions tagged [microbit]

Use this tag for questions about the BBC micro:bit, both v1 and v2

The BBC micro:bit is a small open source ARM-based educational system developed by the BBC. It features 2 buttons, a 5x5 LED array, an accelerometer, a magnetometer, Bluetooth, a 25-pin connector, a micro USB connector, a JST connector, and on the v2 a speaker and a microphone.

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LED current on BBC micro:bit

As I read the Nordic datasheet for the nRF51822, the GPIO pins on the chip are able to source or sink 0.5mA, or 5mA for up to three pins configured in high-current mode. As the schematic shows, the 25 LEDs on the micro:bit are connected…
Mike Spivey
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Should I use a Micro:bit or Arduino or something else?

I am creating a board with the following components: Inputs: Momentary button Reed switch Rotary Encoder with 24 detents Output: Bluetooth The idea is to have it connect to a mobile device, such as an iPhone or iPad, and transmit the data to an…
Brian
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Depict Adress Resolution Protocol using Mirobits

My school assignment says In this task you will implement a simple version of Address Resolution Protocol (ARP). A button press on one micro will send a request to the other micro for its “MAC” address. The micro should respond with its IP number…
HAkid
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Microbit GPIO safety

I asked this question on StackOverflow and was told it was more suited to here... I am getting started using the micro:bit and have just built the micro:bit piano mentioned here: https://www.youtube.com/watch?v=ulKq5To9dmA I want to get my students…
WTony
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Micro:bit LED control using P30N06LE

EDIT: My reference in this question to analogue voltages are just how my voltmeter reads and averages the PWM from the Microbit. Apologies if I'm confusing the matter with this. The project is using PWM with a varying duty cycle. I'm trying to…
Jim Hudd
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Control of 5*5 LED individually with 10 pins

I would like to embroider with electroconductive yarn and I need to light up 25 LEDs but they should work individually (not light up at the same time) and I can use only 10 pins. I cannot use any other IC's as my board is limited. I am using…
James Smith
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Questions about microbit and Nordic nrf51

My first question here and please excuse my English. I am playing with Nordic nrf51 Timer module (using a BBC microbit v1.5). I am using Timer1 to flash a LED. I stored a value to the capture register CC[1] which, according to the reference manual,…
Kaden
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Microbit - Control an LED that is powered externally

I am trying to make a motion activated light with my Microbit. I have a 1W superbright LED and its clear the Microbit won't supply the current needed for this LED. So I'm using a 5V USB micro-B with a LD1117 for 5v:3V and a resistor to power the LED…
Tyris
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