MicroPython Forum (Archive)

Thank you for the information, which I appreciate greatly. You have all saved me a lot of time! --Jon

In the documentation for the I2C constructors I find a statement such as:

classmachine.I2C(id=- 1, *, scl, sda, freq=400000)

What does the asterisk mean? I couldn't find an explanation and the documentation does not include one. All other information in this statement makes sense.

Thanks --Jon

I work with middle-school kids who want to "get something running" quickly and I don't want them to use GitHub, so here's code that will control a MAX7219 8-digit, 7-segment display. It accepts a numeric string and handles minus sign, decimal point, and blank spaces. This code runs in the MakeCode P...

Thank you very much for your insight. The information you provided is very helpful and appreciated. Happy July 4th.

These two lines: my_string = str(-0.3470) #Test value basic.show_string(my_string) yield the string "-0.347". That trailing zero is important in science and engineering because it indicates accuracy. For example, 0.3 mm is not the same as 0.30 mm. The latter indicates accuracy to a hundredth of a mm...

Fantastic guys! Didn't know that was possible. I greatly appreciate your help. Happy 4th of July. --Jon

I want to take a numeric value such as -9.472, convert it to a string (OK, I can do that), and then convert the string into a list: my_list, which equals [ "-", "9", ".", and so on. The individual characters will get used on a display. I found the statement below in the online documentation: String....

Here's an adaptation of code for the Arduino that works nicely on a Micro:Bit connected to a TTP229 keyboard. The keypad unit requires a jumper at the TP1 and TP2 positions located just above the "2" pad on the bottom two rows of solder pads. I recommend using pins and jumper blocks so you can make ...

As far as I can tell, the standard MicroPython I/O control statements such as: pin6.write_digital(0) do not provide a way to change the pin number "on the fly." Thus a program cannot address a series of I/O pins in a loop as you might with: while X < 7 pin(x) .digital_write(my_list[x]) etc... Perhap...

Sadly, the lack of contiguous I/O pins, say, P0--P7--on the micro:bit board limits its use in many experiments that require 8-bit ports. We can disable the LED matrix with display.off(). Is there a way to do something similar for the A and B pushbuttons?