Project writeups and working notes.https://aditbhargava.me/enSat, 10 Oct 2026 00:00:00 GMThttps://aditbhargava.me/projects/tubefurnace/log/2026-10-10-tube-furnace-theory/https://aditbhargava.me/projects/tubefurnace/log/2026-10-10-tube-furnace-theory/log entrySat, 10 Oct 2026 00:00:00 GMThttps://aditbhargava.me/projects/tubefurnace/https://aditbhargava.me/projects/tubefurnace/Toronto Hacker Fab's tube furnace works but was never characterised, and its mains wiring can short to the case. I modelled the build as it stands, in a 1-D simulator checked by hand and by 230 tests, so that the first logged run tests numbers instead of producing them. Flat zone 26 mm at ±5 °C, 48 s to the quartz limit if the relay fails closed, oxide rate set as much by room humidity as by the oxygen.Sun, 04 Oct 2026 00:00:00 GMThttps://aditbhargava.me/projects/asicpuzzle2026-starbattle/https://aditbhargava.me/projects/asicpuzzle2026-starbattle/Using the gate-level simulator from part 1 to work out what the Jane Street puzzle chip checks, an 11 by 11 two-star Star Battle, and recovering its region map by running the netlist rather than reading the layout.Thu, 10 Sep 2026 00:00:00 GMThttps://aditbhargava.me/projects/asicpuzzle2026/https://aditbhargava.me/projects/asicpuzzle2026/Extracting a netlist from a GDS layout, validating a gate-level simulator against the puzzle's own waveform, and using Z3 to find the 121-bit key.Sat, 05 Sep 2026 00:00:00 GMThttps://aditbhargava.me/projects/cact/https://aditbhargava.me/projects/cact/Machined a C110 copper condenser block to GD&T for an asymmetric-sawtooth vapor chamber. Used it in the assembly to test performance against a control setup. At 410 W the charged chamber reached steady state and passed heat to the condenser at 0.074 K/W, against 0.26 to 0.28 K/W dry.Fri, 01 May 2026 00:00:00 GMThttps://aditbhargava.me/projects/openvinyl/https://aditbhargava.me/projects/openvinyl/A hill-and-dale record printed and played on a hobby FDM printer (v1), and a lateral-cut encoder that writes the printer's G-code directly (v2, verified in software, not yet printed). Every groove parameter is derived from bead width, stylus contact and printer acceleration.Sun, 01 Mar 2026 00:00:00 GMThttps://aditbhargava.me/projects/gearbox/https://aditbhargava.me/projects/gearbox/3:1 speed reduction, 90 degree angular + linear offsetWed, 03 Dec 2025 00:00:00 GMThttps://aditbhargava.me/projects/cameramanipulator/https://aditbhargava.me/projects/cameramanipulator/Automated camera manipulator for advanced hobbyist and beginner professional cinematographersFri, 21 Nov 2025 00:00:00 GMThttps://aditbhargava.me/projects/poststrokerehab/https://aditbhargava.me/projects/poststrokerehab/Exoskeleton and sEMG signal processing to facilitate post stroke rehabilitationFri, 21 Nov 2025 00:00:00 GMThttps://aditbhargava.me/projects/neurosteady/https://aditbhargava.me/projects/neurosteady/Engineered a closed-loop hand tremor mitigation system: real-time transfer learning model to detect tremors and servo-based actuators to counteract them. Built and demonstrated in 48 hours; tremor reduction was not quantified.Sun, 02 Feb 2025 00:00:00 GMT