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https://www.youtube.com/@EngineeringMindset : Great tutorials on components, gear, and information.

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What is the difference between MicroPython's utime library and Pythons time library?

The utime and time libraries in MicroPython serve similar purposes but have some differences in their implementation and functionality. Here's an overview of each: utime Library: Purpose: The utime module is specifically designed for MicroPython. It provides functions for working with time-related tasks, such as sleeping, getting the current time, and measuring time intervals. Functions: utime.sleep(seconds): Suspends execution for the given number of seconds. utime.sleep_ms(milliseconds): Suspends execution for the given number of milliseconds. utime.sleep_us(microseconds): Suspends execution for the given number of microseconds. utime.time(): Returns the current time in seconds since the epoch. utime.ticks_ms(): Returns the number of milliseconds since the board was powered on. utime.ticks_us(): Returns the number of microseconds since the board was powered on. utime.localtime([secs]): Converts a time expressed in seconds since the epoch to a tuple representing local time....

How to Figure out needed Voltage, Resistance and Current

This formula will tell you what resistance you must provide to reduce the voltage of the power source to the needed\safe component voltage. You need to the know the manufacturers specification for 'Forward Voltage' and 'Amperes' of the component you want to power. R = (*bV-*fV) / I Lets take an LED light. Mine are 3.2V Forward Voltage, and will draw at least 24 mA. We want to illuminate it with a 9V battery. Subtract The forward voltage of the LED 3.2V from the Battery's 9V. Gives us 5.8V. That is the excess voltage, that will damage your LED. Now we divide the excess voltage by the amperes\current. First Convert the mA's to Amps, take 24 mA and divide by 1000, equals .024 amps. Now divide 5.8V / .024A Your answer is 241.6666 Ohms So using a 241 Ohm resistor with a 9 volt battery, will reduce the voltage to 3.2, and provide enough current. R = Resistance ** bV = Battery\Power Source Voltage ** fV = Forward Voltage: What the component requires, like a standa...

The Ins and Outs of Raspberry Pi Pico W

There are a few subtle issues with the installation instructions RPi has made. 1. Unlike the previous Pico's, the on board LED is no longer connected to GPIO 25, it is connected to the wifi and is call up by the text 'LED', yes the quotes are needed in the command line. After two hours of searching I found a obscure forum post. Ruined my first impression and first expereience with the Pico, and cost me 2 hours. https://projects.raspberrypi.org/en/projects/getting-started-with-the-pico/9 does not go with the exact model Pico W. But you need the basic information, such as the way to use the main.py for automation. This has the added problem that the on board led is attached to gpio 25, when the w has it set 'LED'. WTFreak! Of course this does not help in the set up and usage of the wifi, For that you need this page https://projects.raspberrypi.org/en/projects/get-started-pico-w/1 , but it does not have any information about writing to the LED pins, you have to fin...

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