Tag Archives: coin door

Star Trek HAPP CoinDoor Red Alert Indicator

555 Timer circuit and PCB licensed under TAPR/NCL Open Hardware License. Simple thru Hole componets should allow most people to solder this project over a evening. Timer circuit used to Simulate the “Red Alert” Indicators on the corridors of the Enterprise from Star Trek. Continue reading

Posted in Arcade, DIY, NCL, sega, TAPR, vector, Video Game | Tagged , , , , | 1 Comment