USB CO2 Air MonitorCompact USB-powered desktop CO₂ air quality monitor using an NDIR CO₂ sensor, MCU, small display, and visual status indication, with schematic-first verification.Jjeffwipesa month ago·Star
ANC Circuit3 Stage signal conditioning circuit. Pre-amplification (G = 10) Low pass filter, and anti-aliasingJjeffwipes2 years ago·Star
