• Android Things
      2 min | 1101

      #ProjectDIVA: Android Things DP5 (updated 24.08.2017)

      Android Things | 2 min | 1101


      android things
      projectDIVA
      raspberry pi
      sensor mesh

      Hi!

      Android Things DP5 is out and of course, new features are available.

      The most important features are:

      • Runtime Pin Configuration
      • OpenGL 2.0 Support (that means hardware acceleration on the RPI!)
      • ViewWeb is available!

      This time you need to use the Android Things Console to download the image as follows:

      1. Go to: Android Things Console and sign in using your Google credentials
      2. Click on: Create a new Product
      3. Go to: Factory Image
        • Select: Empty Bundle (if you don't have any app) and the Android Things v. OIR1.170720.015
        • Click on: Create Build Configuration
      4. Make a coffee or just wait a coupl...
    • Android Things
      1 min | 1547

      #ProjectDIVA: SensorTag Hub using a Raspberry Pi

      Android Things | 1 min | 1547


      android things
      applications
      cc2650
      raspberry pi
      sensor mesh
      sensor tag
      texas instruments

      Two posts in one day! Now the SensorTag CC2650 is running on Android Things. The Raspberry Pi 3 can be used as a sensor hub, and the SensorTag can be connected to it using BLE. I modified the original app and now it is working on Android Things! Minimal changes were required, especially on the files related with the user interface. Moreover, WebView is still not supported on Android Things.

      The code can be found here:

      Java **Code:** https://goo.gl/CkKzNL

      Hardware & Software

      As I said b...

    • Android Things
      1 min | 2331

      #TI: SensorTag CC2650

      Android Things | 1 min | 2331


      android
      android studio
      bluetooth
      cc2650
      sensor tag
      texas instruments

      I've uploaded a repository for the Texas Instrument SensorTag CC2650. I updated the open source TI repository, which can be found here.

      Due to licensing restrictions (I do not know which ones) Texas Instruments was no longer able to keep the open source code in sync with the SensorTag application in Google Play. That means, the new version in Google Play has more features than this one. But this is open source, and can be modified and extended! I am planning to collect the sensor data and publish on a G...

    • Android Things
      1 min | 640

      #ProjectDIVA: nRF24Things Rev. 0.3

      Android Things | 1 min | 640


      android things
      dhcp
      nrf24l01
      raspberry pi
      sensor mesh

      I've recently updated the nRF24Things project. I introduced some changes to the database main table (sensors) and to the handler class DatabaseHandler. Additionally, I added a second table for the payloads (payload). The two tables are related using the foreign key nodeID. I added some search options for the payloads: search by payloadID, nodeID etc.

      The main idea of this project is to measure the humidity, temperature, air quality etc. of a room with multiple sensors (may be using the Pi...

    • Android Things
      3 min | 1353

      #ProjectDIVA: PiCoBo Rev1.1

      Android Things | 3 min | 1353


      android things
      dehumidifier
      dh11
      nrf24l01
      pcb design
      picobo
      raspberry pi
      smart sensor

      I had some humidity problems in the basement and I thought I can buy a dehumidifier. I bought this one on banggood 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: https://goo.gl/CPGcYK
      Eagle Eagle: https://goo.gl/xFcc24
      Android Things 
    • Android Things
      1 min | 628

      #ProjectDIVA: Update 1.1

      Android Things | 1 min | 628


      android things
      dhcp
      nrf24l01
      raspberry pi
      sensor mesh
      ui

      Hi everybody!

      I've recently updated the code for the communication between the raspberry pi v3 and the rf24l01+ module using android things (0.)4.1.

      You need the following things:


      Android Things
      nRF24Things: https://goo.gl/SNnhxq
      Android Things Android Things (0.) 4.1

      You can find more info about the project on https://goo.gl/XsRJtI .

      I'm making a smart dehumidifier, so stay tuned more info is coming this week! (Update: here the link!)

    • MicroPython
      1 min | 3102

      #MicroPython: Vu meter using WS2812B and SPW2430

      MicroPython | 1 min | 3102


      esp32
      micropython
      SPW2430
      wipy
      ws2812b

      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 | 4084

      #MicroPython: Weather Report using NEO-M8N

      MicroPython | 1 min | 4084


      esp32
      gps
      micropython
      report
      st7735
      weather
      wipy

      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!

      PythonCode: https://goo.gl/v7NCkj

      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 | 4914

      #MicroPython: Weather Report Box

      MicroPython | 2 min | 4914


      esp32
      gps
      micropython
      st7735
      weather
      weather report
      wipy

      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 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 ...