ūüéČWe can now proudly present the winners of the TAPAS Community Challenge 2018! ūüéČ
Congratulations to Team "Wireless Charging" (idea 56). We are really excited for all finalists and a really big thank you to all participants for your interest in this challenge!

We got over 200 submissions! 65 ideas got one or more TAPAS boards, 10 submissions were presentation-ready.
And now we have 5 finalists! YEAH ūüėÉ The finalist's idea numbers were 40, 56, 68, 212 and 213.
What's next?
We are now preparing the next steps for you, the community. Please stay tuned!
We are working on a forum and a separate webpage. If you have any question please don't hesitate to contact us via email!

Ready to Use Inverter Charger for underdeveloped remote areas.

I saw this community challenge and instantly knew that Tapas is best fit for attending to needs of Developing countries.


In Pakistan, my home country, there are plenty of remote villages which do not have infrastructure to electricity, or where it does exist, the shortage of power generation in the country leads to severe power supply cutbacks. This has been due to natural calamities of the past such as  Floods and Earth Quakes in Swat valley of Karakorum range or the neglected remote desert areas which only have limited resources.

For these places, Electricity serves as ray of hope of survival which brings people together to rebuild. . For this purpose we want to develop an Ad hoc Inverter that caters to their basic needs such as:

- Fan/Air Conditioning in Summer

- Heating in Winter

- Water pump to pull water from the ground

- Lighting for after dark.

- Mobile Charging Station


For Future scalability, we Intend to keep one profile for:

- Connecting Solar Panels to make it work as a Battery Charger. (Intention is to connect the Solar Panels to charge Internal Battery).

Much of the similar work is done by NGOs where they tend to solve one single problem. However, with TAPAS, by creating a programmable yet easy to use intuitive Inverter allows easier to install, and providing them plenty of ways to use their electricity.


What are we trying to achieve:

In essence, we want to create a easy to use front end that is easy to install, and easy to operate with safety for places which do not have access to electricity, or are a relief places such as emergency tent based hospitals and schools.

Why Tapas? Because, it provides flexibility of installation for using it and coupling it with Solar Panels which is the stage 2(if time permits till deadline) for us in providing a solution.

Is it not expensive? Yes. But the flexibility to use in the areas outweighs much of other donated systems which provide one use case (Pumping water out of the ground).



- Create pre-defined profiles that outputs optimal voltage and waveform.

- Create a easy to understand touch penal to select a profile.

Note: I wish I could document more concretely but due to deadline I could not. Our long term with the device is as explained. The first stage serves as proof of concept.



Asif Nadeem - Applications Engineer for Power Management IC - Dialog Semiconductor

Aqeel Arshad - Embedded Engineer - Osram

Muhammad Hassan - Concept Engineer - Infineon


Tapas Required:

1 Tapas board

  • Asif Nadeem
  • May 30 2018
  • Jun 4, 2018

    Admin Response

    this idea will get one TAPAS dev kit

  • Admin
    Nora Schille (TAPAS team) commented
    June 04, 2018 09:28

    Hey Asif,

    thanks for your submission. Cool idea!
    We wan to provide you one TAPAS board.
    One of my colleagues will message you shortly.

    Nora @ TAPAS team

  • Asif Nadeem commented
    June 04, 2018 09:52

    Hey Nora,

    Thanks for the reply. Excited to work with Tapas.

    Time to order some stuff while Tapas arrives :)


    Asif Nadeem.

  • Admin
    Nora Schille (TAPAS team) commented
    June 04, 2018 14:49

    Hey Asif,

    perfect! I hope it arrives soon!
    Something else...

    Please post the progress within your idea board submission.
    PS: We want to do a community call with you! Please use our doodle to find a date which fits best for you. :-)

    Nora @ TAPAS Team

  • Jacqueline Hofmann commented
    June 20, 2018 13:07

     Hi Asif,

    Don't forget that the submission deadline for your presentation is on 24th of June! We are already curious to see the results of your project :-) Keep in mind that you still have time to work on the implementation of your idea after the submission!

    Please post your project visualization and all related documents within your idea board entry :-)


    Jacqueline @ TAPAS Team

  • Asif Nadeem commented
    June 24, 2018 11:42

    Hey Guys, 
    Here is out progress, and some of the issues that we have faced: 

    We are currently experimenting with different Brush-less motors and comparing the performance of the TAPAS invetor to the off the shelf available BLDC drivers aka ESCs.
    - We have two BLDCs :
    -- Rated: 9.5KV and 1200 KV

    - Input voltages are limited to 12 VDC because we want drive the inverter from readily available and cheap 12 Volt Batteries 
    - Each BLDC is connected to 8 x 5 cm Fan 

    - Software being used:
    -- TAPAS python library


    Current issue being faced:
    -- Difficulty detecting the motor params
    -- Many times during the detection the whole boards shutdown, causing the rpi to reboot
    -- The Python library does not provide any functions to load the json file, containing the motor params.
    -- This json file is generated once a motor is detected


    We are still investigating the reasons for board shutdown, and sometimes not being able to detect the motor parameters. Please do update us if you guys have seen this issue, otherwise, I ll post the feedback when we have finished our exercise. I am also attaching the snapshot of the error. I also have attached the video of the BLDC motor running. 

    We chose to start with Motor evaluation as it fulfils our important use cases: Pakistan being a hot country, the remote areas require almost always a fan to stay ventilated.

    Furthermore, We are currently in process of 3d Print the casing for the device. I have attached first few prototypes, which we will are still testing to come up with a final design. 

    We are working to test all of our use cases individually, before proceeding to select a battery and the solar panels. 

  • Asif Nadeem commented
    June 24, 2018 13:21

    Here is the summary of our idea, as per the criteria: 

    The Idea (Creativity)

    Power shortage in Pakistan has been a consistent problem. The rising population and lack of new electrical generation plants have contributed to suffering in not only the economy of Pakistan but also the daily lives of people. 

    Balochistan Province in the South-West of Pakistan are considered ideal for Solar power generation as seen in the attached Solar radiation map of Pakistan attached. In Balochistan, 80 per cent of the population lives in the rural areas. The population density is very thin and villages are separated by large distances with absolutely no approach roads (Source ). Light is the only requirement for these houses located in remote areas of the province and the electric requirement for each house is 100 watt at maximum.

    By creating a Solar Inverter by Using TAPAS and a 12 V battery, we aim to provide a portable, plug-and-play (no installation), and sustainable source of energy to these houses and serve the needs as described in the Initial idea. 


    Impact and Scale

    The Impact and scale could be best understood by seriousness of the Pakistan government to take a up a similar initiative in one of the provinces by providing 200 Watt Solar Inverters 5800 off grid homes under the Green Growth Initiative (Source ). Under this scheme: Families will receive a 200-watt solar panel, two batteries and other accessories to run a ceiling fan, a pedestal fan, three LED lights, and two mobile phone charging slots.

    We believe by using TAPAS board, we can create a cost effective Solar Charger and Inverter, which caters to these needs by creating a portable front end consisting of Battery, Solar Penals, and different output slots. Once we have our advance stage prototype, We plan to pitch our solution to not only our local government officials but to organisations in Pakistan who have "Give Back to Society" initiatives. Essentially, asking the companies if they would like to donate one complete solar inverter to one family. 

    We believe with this we can reduce the burden on electric generation as well as promote renewable clean energy initiatives in Pakistan. 


    We are currently working on designing the front end which consist of 3d Printed box which contains USB slot, AC plugs, and Individual switch to turn on the relay of the slot. The plan is to have battery with the box with Movable solar panels which could also be scaled. 


    Market Readiness

    As seen in the progress, we are currently evaluation what type of motors would be best to work with. 

    Once we have evaluated all the use cases ( as listed in the idea), We would like to calculate the power consumption to decide on the type of battery we should use. We then will think about which type of solar panels would work best. 


  • Muhammad Aqeel Arshad commented
    June 24, 2018 19:35

    Some more updates on the motor driving:
    - increased current limit, sometimes help to detect the motor and later also run it properly
    - The issue of rpi getting shutdown during detection is still there

  • Susanne Forster (TAPAS team) commented
    June 26, 2018 12:58

    Hey Asif & Muhammad,

    we really like your idea.

    It would be great if you could share a video of your project with us!

    Best regards,

    Susanne @TAPAS team

  • Muhammad Aqeel Arshad commented
    June 29, 2018 13:14


    Below is the latest video. 

    Currently, we are looking into the source code of motorware to see how the spi communication is working.

  • Muhammad Aqeel Arshad commented
    July 02, 2018 13:16

    3d case part-2

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