74HC Series 2 to 6V Analog Multiplexer / Demultiplexer - SOIC-16 #commonpartslibrary #integratedcircuit #icswitch #multiplexer #demultiplexer

Misty Pink Replicator Path B schematic with active ESP32, USB-C battery power, e-ink display, reserved T5838 1.8V microphone domain, and reserved CI1302 VIN5V analog voice domain.

Ultra-Compact 2-Layer PCB Redesign with Preserved Stackup and Net Classes (SPI / Analog / Power)

Smart Intercom Adapter for Analog Door Intercom using ESP32

Two-PCB low-noise EEG system: Digital board (ESP32-S3-MINI-1U + ADS1299 + CP2102N + USB-C + 1S Li-ion charger/power-path + DF40 mezzanine) and Analog board (3x ADS1299 + REF/BIAS/DRL + driven-shield electrode interfaces + local low-noise regulation + test points). DF40 mezzanine carries only power + digital SPI/control with shared SPI, shared START/RESET, and separate CS/DRDY per AFE. 4-layer stacks with strong analog/digital partitioning and interleaved GND pins on DF40.

AD9833-Based Function Generator with Multi-Rail Linear PSU and Star-Grounded Analog Output Stage

Battery-isolated 16-channel medical-grade EEG front end using dual ADS1299 analog front-ends and an STM32F405 host with integrated WiFi and microSD (SDIO), featuring corrected isolation, and robust low-jitter clock distribution for dual ADS1299 #WiFi #microSD #Isolation #Clocking #ADS1299 #STM32

Battery-Powered 2-Layer LM358 Analog Replicator PCB with Dual-Gain Edge Potentiometer and Solid 12 V Ground Plane