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#ProjectDIVA: PiCoBo Rev1.1

Hi there!

I had some humidity problems in the basement and I thought I can buy a dehumidifier. I bought the this one on ebay Dehumidifier 500ml. I knew they are not good enough, but I wanted to try.

This type of dehumidifier uses a peltier element to cool an alumium disipator (peltier cool side), which condenses the humidity. The condensed humidity drips into a water tank until it is full. Then, a switch is triggered and the system stops. The peltier hot side has a bigger disipator and together with a fan disipate the generated heat.

C++  Code:
Eagle  Eagle:
Android Things  nRF24Things:

PS: Good luck to all of you who are struggling with the washing machine in the basement.

Wipy2.0 Vu-Meter

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#Wipy2.0: Vu meter using WS2812B and SPW2430

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 (DC pin).

Python Code:

Weather Wipy2.0

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#Wipy2.0: Weather Report using NEO-M8N


I had two busy months, I've been writting my PhD-Thesis, and another publication and yeap... sorry! I forgot to update the blog!

Python Code:

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 self.gps_segments[0][2:] in self.supported_sentences:
    # parse the Sentence Based on the message type, return True if parse is clean                        
    if self.supported_sentences[self.gps_segments[0][2:]](self): 


# line 798:
# All the currently supported NMEA sentences
supported_sentences = {'RMC': gprmc, 'GGA': gpgga, 'VTG': gpvtg, 'GSA': gpgsa, 'GSV': gpgsv, 'GLL': gpgll} # GPS + GLONASS

I bought it from ebay, here the link:

NEO-M8N Ublox NEO-M8N x 1
The cold start needs a bit more time (estimated), but the module has a battery, then the warm start is much more faster (under 10 second). Please note that the VCC and GND pins are switched w.r.t. the NEO-6M board!

Gearbest tv box promotion promotion

Wipy 2.0 ST7735S Ublox

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#Wipy2.0: Weather Report Box

Hi again!... First of all:

Happy Chinese New Year!!!

I've just uploaded some code for the Wipy 2.0. I wanted to write some python. 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 a comment, share and/or like! It would be very much appreciated!

Python Code:

#ProjectDIVA: Update 1

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#ProjectDIVA: Update 1

I've just uploaded the Java codes for the rf24, rf24Network and rf24Mesh that work with Android Things. This time I didn't write a library because I thought it was better to upload an Android project that can be opened with Android Studio (>2.2.3) and directly started on the Raspberry Pi. I think this can also work with NXP Pico i.MX6UL and Intel® Edison with minor modifications (especially in the BoardDefaults file).

In this post you will find some explanations about Android Things (installing, connecting, debugging, speed, etc.), the wiring of the complete 'thing' , the Java code, the modifications that I added, and so on. Some screenshots and videos are also available.

If you find this article interesting, or if you find mistakes (grammar and spelling count too! ),

please leave a comment, share and/or like!

Android Things

I will be also uploading the codes for the node slaves (sensors) that I am using. They are based on Texas Instruments Launchpads. I have some board designs in Eagle too. #ProjectDIVA is big! so, I need some more time to cleanup code!

I thought of rewriting RF24Gateway and RF24Ethernet (both from TMRh20, btw all great developments!), but may be some time in the next weeks!

Let us start now!

Website New Style

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#Blog: New Style v0.2!


CSSHTML5 I've just updated the website style! I was using theme-brick (Pagekit) without any modification, but I added some today!

I hope you find it cool! Leave a comment and tell me what you think about it! Stay tuned, I am loading some new codes!

Happy New Year!!!

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#TI: Happy New Year 2017!!!

Out with the old, in with the new: may you be happy the whole year through!!!

Happy New Year!

This week has been a very busy one for me. But 2017 starts, and I have some new codes to publish!

How I start? Ok, I've been working (may be playing) with Android Things using a Raspberry Pi v3, and I've been rewriting some of my libraries!.

I leave here the link to the RF24Mesh library (still in C++) for the TI Launchpads (almost no-modification from the original):

C++ RF24Mesh:

but click here to read more about Android Things and the rf24Network!...


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#TI: Connecting the tm4c1294xl to a ov7670

I have just uploaded two repositories related to the EK-TM4C1294XL!

You can:

C Take photos over serial interface:
Stream (slow) video over webserver:

Connect the OmniVision ov7670 -old but everywhere- (version with FIFO AL422B) to the LaunchPad Tiva™ C Series EK-TM4C1294XL and take photos over serial interface, or use the http webserver to get a (slow) video streaming.

TI Launchpads

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#Blog: Starting this thing!

Hi everyone, my name is Mauro and I have been working in Hannover, Germany since 2010. I am originally from Argentina (Capitán Bermúdez). My programming languages are C, C++, C#, qt, python, VB.NET, html, javascript, node.js, php, mysql, matlab and some structured text for PLC and some java. Of course, I am constantly improving my skills for each language. 

C C++ C# qt Python html5 javascript nodejs php mysql Java Matlab
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