Electronics parts catalogue

Bare MCU chips and modules — the die, not the dev board.

Assembled boards you plug in and program: Arduinos, ESP32 kits, Pi Picos.

Anything that turns a physical quantity into a signal the board can read.

OLEDs, LCDs, e-ink and 7-segment panels.

Wi-Fi, Bluetooth, LoRa and other modules that get data off the board.

Regulators, buck/boost converters and battery management.

Voltage-controlled switches for driving motors, LEDs and other loads.

BJTs, JFETs and Darlingtons — current-controlled switching and gain.

One-way valves for current: rectifiers, Schottkys, Zeners, TVS.

Indicator and addressable LEDs.

Fixed resistors, every tolerance and power rating.

Ceramic, electrolytic, tantalum and film capacitors.

Coils for filtering and switch-mode power supplies.

Headers, terminal blocks, JST and USB connectors.

Mechanical and solid-state relays for switching higher-power loads.

DC, stepper and brushless motors, plus the drivers that run them.

EEPROM, flash, FRAM and SD storage.

ADCs and DACs — the bridge between analog and digital.

Gates, buffers and flip-flops from the 74-series families.

Operational amplifiers for signal conditioning and analog gain.

Buzzers, speakers and microphones.

Raw radio parts: transmitters, receivers, antennas, RF amplifiers.

Everything that doesn't fit a more specific category yet.