Difference: WeMosD1Mini (4 vs. 5)

Revision 52019-03-25 - UliRaich

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META TOPICPARENT	name="AFNOGWorkshop2019"

The WeMos D1 mini and its sensor and actuator shields

Introduction

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In contrast to a PC the WeMos D1 mini has only very limited memory resources. While 4 MBytes of flash memory is rather comfortable, the amount of RAM (80 K) is a very limiting factor. When running micro Python a mere 30 kBytes is left for your Python programs. There are essentially 2 ways to make most out of the small amount of RAM:

You can pre-compile your programs to byte code, which takes less space in RAM
You can code freeze driver libraries, which means you integrate their byte code into The micro Python image. This however means that you must compile your own version of micro Python and flash it into the WeMos D1 CPU.

A big number of sensor and actuator boards are available. You will find a complete list with their description at https://wiki.wemos.cc/products:d1_mini_shields

Here are the sensor shields and their test programs for the workshop:

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