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Vadim Panov
44 followers -
A tinkerer.
A tinkerer.

44 followers
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Solr 7 beginner tutorial, part 2: delta-import, debugging tips.
In my previous tutorial on the basics of Solr, I didn't manage to fit everything I wanted to share in one post. Now I finally got around to wrapping up the subject with a subset of data import called delta-import and handy tips on debugging. As a consequenc...
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Solr 7 beginner tutorial, part 2: delta-import, debugging tips, Java code.
In my previous tutorial on the basics of Solr, I didn't manage to fit everything I wanted to share in one post. Now I finally got around to wrapping up the subject with a subset of data import called delta-import, handy tips on debugging and some Java code ...
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Budget traveler's guide to Zanzibar (July 2018)
 Why do people choose Zanzibar as their vacation destination? Pristine white sand beaches washed by azure waters of the Indian Ocean seems to be the prime and dominant reason, but for some that's not the only one. The difference between most places with suc...
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Nocturnal solar-powered lamp from a mason jar
 Solar panels are cool, right? All techniques of extracting energy from environment have always fascinated me, with solar panels standing out because of their inexpensiveness and ubiquity. I've been wanting to make something incorporating solar panels for a...
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Nocturnal solar-powered lamp from a mason jar
 Solar panels are cool, right? All techniques of extracting energy from environment have always fascinated me, with solar panels standing out because of their inexpensiveness and ubiquity. I've been wanting to make something incorporating solar panels for a...
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SIM900A 2G module + Hologram SIM card. Publishing sensor measurements to Thingspeak.
This is the second part of the series called "SIM900A 2G module + Hologram SIM card = winning combination in category dirt cheap?" . In the previous post I demonstrated how to perform some essential operations with SIM900A GPRS module: send AT commands to d...
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SIM900A 2G module + Hologram SIM card = winning combination in category "dirt cheap"?
Foreword IoT, the buzzword of this decade, sometimes enters even the minds of people considering themselves resistant to fad, with me among them. One day I was browsing the Internet and saw a company I've never heard of before ( Hologram ) give away SIM car...
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ros-omni-base: ROS mobile robot base for everyone. (Work in progress)
Foreword or why I'm doing this. With exploding expansion of basic knowledge about microcontrollers and single-board computers of the first decades of 21st century, coinciding with abundance of cheap parts (Arduino, Raspberry Pi, MEMS IMU s, Kinect, robot va...
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SIM900A 2G module + Hologram SIM card = winning combination in category "dirt cheap"?
IoT, the buzzword of this decade, sometimes enters even the minds of people considering themselves resistant to fad, with me among them. One day I was browsing the Internet and saw a company I've never heard of before ( Hologram ) give away SIM cards for fr...
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Driving brushless DC motors with Arduino on the cheap using ESCs for RC vehicles.
Brushless DC (BLDC) motors really are at least one step above the conventional brushed ones: they offer higher torque and RPM then the same-sized brushed motors. However, they require more complex control circuitry and the chances are that you rarely hear a...
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