IEEE kicked off the Fall 2024 semester with a workshop designed to teach students the basics of soldering. Particpants practiced soldering various electronic parts onto a "Fire Alarm" PCB. Through this process, they learned about the differences between soldering through-hole versus surface-mount components.
The Fire Alarm circuit utilized an LM358 op-amp in conjunction with a thermistor. When a heat source came into close proximity of the thermistor (the sensor), internal voltage and resistance changes caused a buzzer at the top of the board to sound the alarm, indicating danger. The PCB contained two separate ways to power itself: USB and a 9V battery. Finally, a potentiometer was added so users could change the sensitivity of the thermistor.
Attached to this repo are the workshop slides and the instruction manual distrubuted to the attendees.
See the workshop's Instagram post here.
For a quick tutorial on how to solder, check out this video: Soldering Tutorial for Beginners: Five Easy Steps
For more information about the circuit, visit: ElectronicsTutorials