Build schematic of soldering station 2 in 1, and write program for MC

Good day freelancers, I need build sch for soldering station(iron and hot air gun), all components need locate on one board. Power supply will be external, your task make only "brain board"(with regulation, indication and others). I need make: 1) shematic (simulate); 2) program for mc Detail of feature sch: microcontroler what need use - atmega8, indicator - 7'th segments, regulator two encoder and one potentiometr(one encoder for iron, second encoder for temperature of hot air gun, potentiometr for air blow). Other detail I will give in chat. I add some picture with examples you can use it, but check for good work.