i am planning to do this Arduino-SSR heating element(khantal). i had already menus using lcd and each choices have different setpoints of temperature will PWM work here? or just on/off? and do i need an addiotional component like transistor in between the arduino and ssr? if ever what kind of transistor(specifically)
P.S: i have k type thermocouple and and an amplifier that as the initial temperature get closer to the desire temp. the arduino will signal the ssr to maintain the temperature for a while(Soaking time). i also planning to view monitor that as the temperature increases it will be shown in the screen including the time elapsed.
Materials in hand: ( just to picture out what will i be doing) Arduino SSR k type thermocouple MAX31855(Amplifier) lcd 16x2 w/ i2c 4 push buttons ( for selecting)