Playing with bluetooth GPS for fun and profit

I am recently fiddling with an old Bluetooth receiver to use it as a time source for my Arduino chrondot clock. Please note it’s already been done[] and an interesting graph of Chronodot drift is provided. First of all I decided to get a good look at the NMEA stream coming out of the GPS … Leggi tutto

Updating the Atmega8U2 on an Uno with DFU

My Arduino is quite old, and I had to upgrade the firmware to address  some issues that arose with serial. Basically I used Windows  XP and those resources: but it’s no so verbose, it’s useful as a general introduction. I soldered a 10K resistor like advised, but then  I decided  to rely on this … Leggi tutto

Codingcolor Arduino RTC LCD clock with Chronodot

I recently started experimenting again with Arduino and must say I am having a lot of fun.

Chronodot Arduino and LCD RTC clock
Chronodot Arduino and LCD RTC clock

I had the idea to implement an RTC clock with arduino and excellent Macetech Chronodot and got myself the needed parts from As it often turns out with Arduino project, someone already had the same idea (and luckily they used the Chronodot too): before reinventing the wheel a fast google search revealed “An Arduino LCD clock using the ChronoDot RTC”.

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