Science Fair Iron Repulsion Electromagnet

@aleksandarm72

Hello, Achieving a 90-degree smooth spin with zero jerk in a 5mm envelope is an elite engineering challenge, not just a hobbyist project. I have analyzed your Magno Effect requirements and I am ready to implement this exact 4-layer architecture. Most engineers will struggle with the 20us wake-up delay and the 100uA standby limit. My approach ensures the DRV5032 Hall switch triggers the ATtiny85 via pin change interrupt instantly, while the MT3608 boost stage stays pre-charged at 24V for an immediate, high-energy repulsion pulse. How I will deliver this: • PCB Magnetics: I will design the [login to view URL] and [login to view URL] spiral coils with the precise 0.4mm track width to hit the 20uH inductance target. • Motion Control: I will use ramped PWM for the spin coil to eliminate mechanical jerk, ensuring the needle rotates exactly 90 degrees as specified. • Power Management: Integration of the TP4056 with a Qi receiver and a 20-capacitor bank to maintain the 0.3J energy pulse required for the 5cm repulsion. • Manufacturing Ready: You will receive a complete production package, including KiCad scripts for Gerber generation and a detailed assembly guide. • Educational Documentation: You will receive a "Teacher’s Guide" explaining the physics involved . I can guarantee the 120-day standby battery life and the seamless 3-5cm repulsion distance. Let's bring this high-precision science exhibit to life. Best regards, Aleksandar Makarevski Senior Electronic Engineer

@macroenergy

With a strong background in Digital Motor Control, Analog Design, Electronic Design, and Power Electronics, I am equipped to take on your Science Fair Iron Repulsion Electromagnet project. My extensive experience with PCB design using software such as Altium and Easyeda further assures that I can provide you with a full schematic, PCB layout, and BOM that utilizes readily available components. Having worked on numerous projects that required embedded systems and microcontrollers, I am confident in my ability to deliver a working prototype for your electromagnet with the desired adjustable repulsion strength. Additionally, my proficiency in Matlab simulation can be beneficial when developing your firmware or control code for implementing the adjustable strength dial or digital control feature you need. Safety is always a priority when it comes to designing electrical devices especially for student use - this is something I deeply understand and will reflect in my work. My dedication to absolute electrical safety and clear operating instructions align perfectly with your project's needs. Let's work together to make this Science Fair Iron Repulsion Electromagnet not only impressive but also safe for every student who gets to interact with it!