Mindful Coffee ☕️ — iOS Caffeine Tracker & Brew Journal for iPhone, iPad & Mac. Log espresso, V60, AeroPress, Chemex, French press, cold brew, matcha & tea. Dial in your perfect cup and predict sleep with cortisol rhythm modeling — 100% on-device. SwiftUI · SwiftData · HealthKit · Apple Intelligence.

DIY membrane nitrogen generator for home brewing nitro cold brew and beer. 50L/h output at 99.5%+ purity, 100 PSI, ~$2,200 build. Includes KiCad PCB, STM32 firmware, SolidWorks CAD, and full P&ID. Open source hardware alternative to $4,500+ commercial units.

source code for a DIY arduino slow-drip cold brew tower

A project to control a kyoto cold brew tower via software.