Color Coded GPIO headers

August 26, 2017

I came across this color coded GPIO header for the Raspberry Pi Zero from the Pi Hut. This can be really useful while prototyping a circuit. 5V pins are coded red, 3.3V pins are coded yellow, Ground pins are coded black.

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It can help avoid connections to the wrong pin.

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I usually refer to the GPIO pinout when I am connecting to the UART or the I2C interface. I always mix up the pin names. I wish the header had side labels like the Arduino.

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Given the header height, I guess it is not practical to have labels. You can buy the headers from here.

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I am exhibiting at the World Maker Faire (September 23 – September 24)

August 24, 2017

I haven’t been actively maintaining my blog these days. I recently moved to the Buffalo, New York area and settling down. I am willing to keep up with my blog posts. I have some great news to share with my readers.

My brother and I are going to be exhibiting at the World Maker Faire on September 23rd and 24th, 2017 in New York City. We are going to be showing off a DIY Personal Health Dashboard.  We have been working on a visual aid that motivates one to stay physically active.

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I plan to share my progress of our dashboard through the different stages.

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We look forward to seeing you there.


Etcher – A tool to flash an SD card for the Raspberry Pi

May 12, 2017

We came across a tool called Etcher from Resin.io.  It is a tool meant to flash an image onto an SD card. This is especially useful to quickly setup your new Raspberry Pi. It is a one step process where you can select the image and flash the SD card for your project.

We put together a video that shows how to flash an image for your Raspberry Pi:

 


Raspberry Pi Zero Enclosure – 3D print time lapse!

May 7, 2017

I wanted to document my projects in vivid detail. Recently, I 3D-printed an enclosure for the Raspberry Pi Zero W. I recorded the printing process. The enclosure consists of two halves. The top piece broke while trying to remove it off the bed. In my second attempt, I printed the top piece separately and managed to remove it carefully.

Psst: I am learning to make good videos and I look forward to hearing your feedback


Jaguarboard – Yet another (not so impressive) SBC

December 29, 2015

I usually back Kickstarter projects(in the DIY electronics domain) that peek my interest. I recently backed the Pine A64, UP and the Latte Panda boards but the Jaguarboard is not one of them.

I usually look for a cool feature that would enable me to build a cool project using the backer reward. For e.g. The Latte Panda comes with onboard Wi-Fi/Bluetooth. It has an ATmega32U4 microcontroller that enables easier interface of sensors.

The Jaguarboard failed to impress me for a couple of reasons:

  1. Lack of sufficient GPIO count – They provide access to only 4 GPIO pins. I usually make use of more than 4 GPIO pins in my projects. However, it does come with an I²C port which could be used to expand the GPIO capabilities.
  2. Incompatible with the Raspberry Pi/Arduino add-on boards – It is not possible to port Raspberry Pi/Arduino projects that makes use of an add-on board to the JaguarBoard platform. It also doesn’t make sense developing expansion modules for the JaguarBoard as the lack of a broad user base is a distinct possibility.
  3. Comparison of specs on the campaign page – The campaign creators have compared the specifications of the board to the Raspberry Pi Model 1 rather than Model 2. The Raspberry Pi Model 2 comes with 1 GB RAM while Model 1 comes with 512 MB RAM. I think that is not a fair comparison.
  4. Unrealistic campaign schedule – In my opinion, the promised delivery date of the board is a tad unrealistic. They promised to deliver the boards by January 2016. The Kickstarter campaign itself ends only on January 22, 2016. As far as I know, Kickstarter takes at least 10 days to transfer the campaign money to your pocket. This puts the campaign roughly in the first week of February. Unless the campaign creators, plan to ship the boards using money out of their pocket, this is not possible.

They also have not released any planned timeline of the project. This is possible only if they already have a stash of boards manufactured, packed and stored in a warehouse.

In summary, I am not impressed by the JaguarBoard Kickstarter campaign.

 


DIY IoT Project | Planning a trip to the Sierras using a Raspberry Pi | Part 1 | DIY with Pi

June 1, 2015

Re-blogging my own post from another blog on using a Raspberry Pi to retrieve California state highway road conditions.

Mono Lake, California

DIY IoT Project | Planning a trip to the Sierras using a Raspberry Pi | Part 1 | DIY with Pi.


Travel tip: A tip to set up your Raspberry Pi in your motel room | DIY with Pi

May 24, 2015

Reblogging my own post from another site: I am traveling this memorial day weekend and I wrote a post on setting up your Raspberry Pi in a motel room to verify something quickly for a presentation etc.

Travel tip: A tip to set up your Raspberry Pi in your motel room | DIY with Pi.