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Mohamed Afzal
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a techi
a techi

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Converting/Calculating GPS cordinate ddmm.mmm format to decimal degrees
Here is a thing that i have faced few times when it comes to GPS data. Below is the GPGGA string from NMEA data receives from GPS. I have highlighted the latitude and longitude from the string. $GPGGA,081902.00, 0412.75469 ,N, 07332.48758 ,E,1,08,0.97,10.7,...
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GPS hooked up to Raspberry pi - P2
In previous post you have seen the data format which Pi receives from GPS. Its in bytes and here is some raw data. Note: In order to get GPS position data i have placed the unit out of my lab where it can see clear sky. b'$GPGGA,092543.00,,,,,0,00,99.99,,,,...
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GPS hooked up to Raspberry pi
Its been a while that haven't publish anything. I have been using Raspberry Pi for long time since it was released and the old pi hangs around doing nothing. So i thought of  hooking up an GPS to raspberry pi so that viewers out there who has interest in el...
GPS hooked up to Raspberry pi
GPS hooked up to Raspberry pi
pixelatedpic.blogspot.com
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Arduino and RS485 communication done from scratch....
This experiment was bit delayed due to lack of libraries for RS485 for Arduino. After lots of frustrations, i manage to make it work with soft-serial. Master controller send the command in bytes with [slaveid,status,level] and when a specific id slave respo...
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What is Charlieplexing?
When you use microcontrollers and you are out of PIN's to connect some LED's for status or when you want to drive a binary clock with few pins left in microcontroller, there is a way that can solve this issue. Its called charlieplexing and if you know multi...
What is Charlieplexing?
What is Charlieplexing?
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