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Rebalancing my portfolio used to feel complicated and time-consuming, so I decided to create a simple tool to make the process easier. It’s nothing fancy, but it has helped me stay on track with my target allocation and manage my investments more efficiently. In this post, I’ll share how the…

The Problem: Unintended Bias in Portfolio Construction Investors often build their portfolios by allocating ETFs based on personal judgment, intuition, or informal criteria. While this approach may seem practical, it can lead to unintended risks and suboptimal diversification. For example, consider a portfolio composed of two factor-based ETFs: one focused…

Various types of filters can be used to estimate the orientation of a body based on IMUs measurements. The most commonly used filters, listed in order of increasing computational complexity, are complementary filters, Madgwick and Mahony filters, and Kalman filters. In 2010, S. Madgwick proposed a computationally efficient orientation filter,…

Schematics and PCB of the first (beta) version of a flight computer for an actively controlled model rocket. Components include: Nano v3.0 controller board, 6-DOF accelerometer/gyroscope MPU 6050, pressure sensor BMP 280, and MicroSD Card Module. The PCB was manufactured by sending the Gerber files to JLCPCB.com.

First version of a Thrust Vector Control (TVC) gimbal for a model rocket with a 90 mm diameter. The design was structurally validated using Finite Element Analysis (FEA), implemented in Simulink (SimScape), 3D printed, and successfully tested.