Received my Arduino Uno, micro:bit and Raspberry Pi Pico kit

[FlierMate]

So fast! It took only 2 days (and yesterday was public holiday) to receive my first order from Cytron, the Arduino Uno starter kit and 2x LED strips.

This is my second time playing with Arduino programming. My first encounter with Arduino is 2 years ago, building a simple audio visualizer from Windows sound.



ADDED: Animated GIF showing 1.6 seconds of the audio visualizer project two years ago. Can see the Uno board is not original Arduino Uno (it was bought by my former employer):


I think I have forgotten most part of Arduino programming, barely remember Arduino IDE and avrdude.

Thank you, Cytron!

[FlierMate]

Tested OK with a blinking LED!

[FlierMate]

And now a button switch with serial port interfacing.

The PC end is C# .NET, showing "Button Pressed" if switch pressed.

[FlierMate]

After playing with Arduino Uno starter kit, this time I have ordered BBC micro:bit V2 quick start kit from Cytron, I am a happy customer, hope can receive within these few days.



From makecode website, micro:bit can be programmed with Blocks (low-code), Python or JavaScript. The board has in-built temperature sensor, unlike Arduino Uno R3, have to connect temperature sensor (and resistor) separately to breadboard.

[FlierMate]

Received my BBC micro:bit V2 quick start kit today!

I then program with Blocks, a simple one to show image pattern in LED:

The micro:bit V2 board is very small, smaller than PC mouse. And it has compass, microphone, antenna... and according to data sheet, also comes with temperature sensor. Wow!

Click download on MakeCode website, and instantly get the LED image pattern on micro:bit V2 board!

[FlierMate]

One more to showcase, just choose Basic from the toolbox.

Screenshot 2022-09-29 170314.png (10.9 KiB) Viewed 23990 times

Example text string "mlxl" is displayed on the 5x5 LED matrix:

[FlierMate]

Done a more complicated MakeCode program for micro:bit.

Below is a new Blocks program I created for counter. Since micro:bit has two buttons (A and B), pressing A will increment the counter, while pressing B will decrement the counter, minimum 0.

[FlierMate]

With reference to this nice tutorial at Cytron:
https://tutorial.cytron.io/2022/09/20/i ... d-arduino/

I connect my two boards together with I2C protocol, but without the expansion board.

I refer to Edge connector diagram to find out where is pin 19 (SCL) and pin 20 (SDA):
https://tech.microbit.org/hardware/edgeconnector/

Thanks to Abdul Qayyum from Cytron, this is working!

My micro:bit program:

Arduino program is the same as what has been told in Cytron tutorial, using Examples >> Wire >> slave_receiver.
Just change the address to #99.

And this is the output in Serial Monitor:

com.png (10.69 KiB) Viewed 23872 times

[FlierMate]

Finally figured out how to make Raspberry Pi Pico board works, by first make its internal LED blinks!



First, I use Thonny Python IDE, have to install MicroPython first:

It says "MicroPython v1.19.1 on 2022-06-18; Raspberry Pi Pico with RP2040"

Then start writing code (the code was referred to other tutorial website except the loop and delay):

CODE: SELECT_ALL_CODE

from machine import Pin
import time

while (1):
    Pin(25, Pin.OUT).value(1)
    time.sleep(1)
    Pin(25, Pin.OUT).value(0)
    time.sleep(1)

I have had fun with it. Maybe next will connect to external LED on breadboard!

[FlierMate]

Done connecting to external LED for blinking!

Just change from pin 25 to pin 8.

CODE: SELECT_ALL_CODE

while (1):
    Pin(8, Pin.OUT).value(1)
    time.sleep(1)
    Pin(8, Pin.OUT).value(0)
    time.sleep(1)