This article is an application of Python programming for Micropython used with esp8266 or esp32 attached to DHT11 for temperature and humidity storage. The last 10 temperature results collected every 5 seconds are reported as shown in Figure 1.
This article introduces the use of the list class in Micropython as a queue data structure with a limited number of members. It works according to the FIFO (First-In-First-Out) principle, which can be applied in a variety of applications, such as being used as a storage, and when the data is full but we need to insert new data, the old data must be pop out. The example in this article uses the dCore-miniML board (Figure 1) to read the temperature of the chip and store it in a Queue structure and display it in a bar graph and Micropython implemented firmware version 1.16 (2021-06-23) for the ESP Module (SPIRAM).
From the previous ulab article, it was found that Micropython can implement the same dataset processing instructions as used in Numpy through the previous ulab library v.0.54.0 which is the older version of ulab (currently v.3.0.1) brought up this article. This article describes how to create a Micropython that integrates the ulab library and uses it with SPIRAM versions of esp32.
ulab3
From Figure 1, it can be seen that the structure of the ulab library has changed from the original. This causes the programming from the previous example to have to be modified. Under ulab there are libraries of numpy and scipy. The details of numpy that are supported are as follows.