555 actually signifies a well-established, ubiquitous, dirt-cheap and highly versatile timer IC beloved by electronics hobbyists and often used to make bleepy lo-fi synthesizershttps://twitter.com/OneLuckyGirl_28/status/1385587405516795905 …
the original forum posts for it are long gone, but the wayback machine has them, so you can get the PCB layout, schematic, and BOM from there if you want https://web.archive.org/web/20110825124749/http://forum.sonodrome.co.uk/t143-milgram-555-contest …




