Out with the old, in with the new! Happy 2019!
It's been a two years now since I started this blog. It's a hard job to maintain it up-to-date but I still have fun writing and coding for this purpose! I hope the next year will be better than this one! :)
This post includes a new video for happy new year! The video combines some of the MicroPython code, that I've published this year. I'll be uploading the repo to GitHub in the next days. But, in the meantime enjoy the video, and check the MicroPython projects here!
MicroPython | 2 min | 3883
To continue the series of posts "connecting sensors to MicroPython", this article is about the MPU6050 (you can use also the MPU9255, I am still waiting for the Chinese sensor package) and the WiPy 3.0. Combining the IMU sensor with the WiPy and two micro servos 9g, it is possible to stabilize a camera (tilt/rotate).
To calculate the compensation needed for the stabilisation, I added the
ulinalglibraries to the project to make matrix multiplication and ...
MicroPython | 4 min | 15987
One of the most visited articles on my blog is the Getting started with MicroPython! tutorial. If you still don't know what is MicroPython and you want to start programming microcontroller boards (ESP32, ESP8266 etc.) using a small version of Python 3, you should look at that article . Don't expect to use machine learning or/and other big libraries (the available RAM and microcontroller performance is far away for that aim), but you can do some projects like these:
MicroPython | 1 min | 8163
While I was reading my getting stated tutorial about MicroPython again, I noticed that I've forgotten to tell something about dependencies or packages.
Here is possible to find some MicroPython packages. On the WeMos (ESP32) or the ESP8266, it is possible to install these packages using the
upippackage manager. The WiPy doesn't have the package.
To download the new packages, you need to connect the board to the Internet. I take the WeMos as example and typing the following, you can connect the board to your WiFi router:
ssid_ = <your_ssid> wp2_pass = <your wpa2 password> import network sta_...
MicroPython | 5 min | 3495
I was surfing the services that Google offers, I found the Geolocation API. As Google describes the API: it returns a location and accuracy radius based on information about cell towers and WiFi nodes that the mobile client can detect. As I was writing the last post using MicroPython, I thought the WiPy 2.0/3.0 could be a nice "mobile client".
To use the API you need to get an API key from Google. As a standard user of the API, you get:
- 2,500 free requests per day, and
- 50 r...
MicroPython | 5 min | 24880
Another quick tutorial, this time for MicroPython on ESP32/ESP8266. You can find all the information that I'm writing in this post in different articles on the Internet but I've not found anything that summarizes all the topics. That is why I am writting this article. I included some links at the end of each topic to extend the info. Feel free to visit them, if you want more information, or write a comment I will try to reply it ASAP!
MicroPython | 2 min | 4365
Hi everyone! As soon as I saw the WS2812B led strip, I thought: doing a vu-meter with these LEDs would be a nice thing!.
I was looking for economical MEMS microphones with board (I didn't want to solder a board). I found two options: SPH0645LM4H and SPW2430.
The SPH0645LM4H uses an I2S interface and the SPW2430 has an analog output. The second board (SPW2430) has two outputs: AC pin which has a capacitor in series to eliminate the DC output of the IC, and the output of the IC (...
MicroPython | 1 min | 5153
Hi! I had two busy months, I've been writting my PhD-Thesis, and another paper and yeap... sorry! I forgot to update the blog!
Three weeks ago, I received a Ublox NEO-M8N GPS and I tested it with the code that I had. I said it should work, but as you know it always needs some modifications! The NEO-M8N supports GLONASS and GPS, so the $GP changes to $GN, e.g. $GPGGA (GPS) > $GNGGA (GPS+GLONASS).
The following changes were added:
# lines 604-606: if ...
MicroPython | 2 min | 6177
Hi again!... First of all:
I've just uploaded some code for the Wipy 2.0. I wanted to write some python code. That was why I took the Wipy 2.0 and programmed something like a weather report box. In this project the Wipy 2.0 reads the GPS coordinates via UART, then makes a web get request using the API of openweathermap, and after that the results are displayed on a LCD.
If you like this, please leave ...
MicroPython | 1 min | 1930
I wish you a Merry Christmas!!! and to celebrate this evening I've just uploaded a new repository for the Wipy 2.0. Some Christmas lights using the WS2812B!
Things used in this project
boot.py: add your ssid, wlan password, and configure the ip address. You need this file if you want to connect the Wipy 2.0 to your router, otherwise you can avoid copying it and the Wipy remains as an wlan access point.
main.py: you find some options here. The most impor...