top plate but above all that remember that our solder paste melting point will be NUMBER_TOKEN degrees and you could also find some paste that will melt at NUMBER_TOKEN and this temperature is still ok with abs that will melt at around NUMBER_TOKEN degrees or more the case has a few parts and i've designed it in such a way that everything will fit perfectly on this small part we can add the screen and the buttons so we also need four of these type of push buttons on the side of the main case we have spaces for the on and off switch and on the back we have another space for the cooling fan the metal plate will get screwed inside here and we have a small skirt of plastic around so it will keep it at the exact height and on the bottom part we can screw the pcb with the arduino and the relay on the side and that's pretty much it it took me a while but finally i had a good design so this is all that we need for this project so let's assemble it but please be careful because this project is working with high voltage from the main outlet so if you're not sure don't start this project and also use proper insulated tools and never touch the exposed wires so guys download the schematic from below and have it in front of you so you could follow the same steps first we need to secure and place the heating plate but for that we need to add the metal part below because if you try to add it later you won't be able because we will have these plastic parts that will get in your way so you must add the metal part first so inside the case we have four holes for screws so make sure that you make some holes in your metal plate as well four holes will be for the heating plate and four more holes for each corner for the plastic case now we add the plate and tie the screws on each corner like this now we take the heating plate and we add four long screws and we tighten up for each like this at this point we also have to secure and place the thermistor on the metal plate so we can measure the temperature we could use this kind of thermistor or if you want this other one that already has a metal cover and like that maybe it will have a better connection but in my case since i still have a little bit of space aside of the heater element inside i want to add this thermistor inside here so i secure secured in place inside with force and some kept on tape and this could withstand very high temperatures then we add four more nuts and this will define the maximum height before i add the heater inside i cut some of this insulation foam i cut it to size and also make the holes for the screws then i add it in place over the metal plate and now we can add the heater and make sure that you pass the power wires and the thermistor to the bottom side of the case because the electronics will be below here and now from below i tied four more screws and the heater is now in place and as you can see the plate gets a little bit above the plastic case so we could easily remove the pcbs okay now let's assemble this part here first we have to add the push buttons so get four of these push buttons and solder wires to each one like this i use one black wire for ground and the color one for signal each button will go behind this plastic pad and like that when we push the pad we also push the button below and to keep the buttons in place i
NO_SEGMENT_TOKEN