Tag: nrf24l01

• #ProjectDIVA: Arduino Mini Pro

  Android Things | 2 min | 5471

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  raspberry pi

  sensor mesh

  android things

  nrf24l01

  arduino mini pro

  This article extends the node tree of ProjectDiva to include an Arduino Pro Mini.

  This article explains how to connect a Arduino Pro Mini to the nRF24Things application (Android Things). The code allows sending and receiving messages between the nodes. It uses the well-known nRF24 libraries to create a sensor mesh, where the node 0 (in this case a Raspberry Pi running the Android Things application) actuates as a "DHCP" server and assigns the node addresses in the mesh.

  Preview

  Requireme...

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• #ProjectDIVA: nRF24Things Rev. 0.3

  Android Things | 1 min | 864

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  raspberry pi

  sensor mesh

  android things

  dhcp

  nrf24l01

  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...

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• #ProjectDIVA: PiCoBo Rev1.1

  Android Things | 3 min | 1775

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  raspberry pi

  android things

  nrf24l01

  picobo

  pcb design

  dh11

  dehumidifier

  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.

  	Code: https://goo.gl/CPGcYK
  	Eagle: https://goo.gl/xFcc24

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• #ProjectDIVA: Update 1.1

  Android Things | 1 min | 851

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  raspberry pi

  sensor mesh

  android things

  dhcp

  ui

  nrf24l01

  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:

  	nRF24Things: https://goo.gl/SNnhxq

  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!)

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• #ProjectDIVA: Sensor mesh based on nrf24l01+ connected to Android Things (Update 1.0)

  Android Things | 6 min | 104375

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  raspberry pi

  sensor mesh

  android things

  dhcp

  ui

  nrf24l01

  android studio

  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 thi...

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