I’m puzzled – both the 1N4001 and LM7805 are rated to withstand a lot more than 12v. Hopefully someone with more experience can weigh in with an answer.
Let me know if you need me to send you spares – I’m guessing you should be OK if you replace the 1N4001 and LM7805. That said, there’s a chance of damage to the other ICs including the ATMEGA if a short occurred.
mmhh might have been the power supply itself that died, i don’t have another one to test it. so i’ll tell you later.
i did not think about it at first, this is quite rare…well the groovesizer is more than probably ok.
it should run on 12v, right ? this is just less efficient ? tell me if i understood well the voltage regulator specs ?
Sorry, missed the question there – 12V will work, but the 7805 will get a lot hotter than on 9V. Also, there’s less room for error should your power supply actually deliver more than 12V (quite often the case). Best to stick with a 9V supply.