One day, in March 2015, whilst shopping for Arduino bits and pieces in Ban Mo, an electronics street market in BKK, I came across a Cambodian couple selling various reclaimed electronic parts. In their collection was an LED Bar display from what was, I presume, a graphic equaliser. When I enquired as to the price, the gentleman stated that he required 20 baht for the aftermentioned item, but then his partner/girlfriend/wife corrected him and said that they only wanted 10 baht!
I purchased the LED Bar Graph display, took it home, and after much googling, I eventually realised that no specific libraries existed for this device. So I promptly set about writing my own sketch, which then evolved into an Arduino Library that was developed over the course of a couple of weeks. That library is the LEDBarGraphOHA8494.