I am henry "the mutant", engineer and inventor, in my way i found a costumer that owns a car dealer and wants to sell those musical horns that plays tunes when you beat the horn. The fact is that he only wants to change the actual FACTORY RELAY, and the is when i came in play:
change just the FACTORY RELAY HORN replacing it for NEW MUSICAL, means that i need a microcontroller with:
-Internal regulator (12Volt to 5Volts)
-Soppport rougth enviroment: maybe 200°C and humidity
-Easy Implementation with and 5 Amp-12Volts MOSFET or transistor
And all the above small enougth to fit in a relay
Anybody has an idea of what hardware i can use?
ANY HELP IS WELCOME