2N2222A by Texas Instruments is a small signal NPN bipolar junction transistor (BJT) with a max collector-emitter voltage of 40V and a max collector current of 0.8A. It is commonly used for switching applications due to its fast turn on/off times (35ns/285ns) and high transition frequency (300MHz).
Yageo's RC0402FR-0710KL is a 10000 ohm SMT fixed resistor with 1% tolerance, suitable for applications requiring a rated power dissipation of 0.0625 W. With a temperature coefficient of 100 ppm/°C, it operates b/w -55 to 155 °C, making it ideal for various electronic circuits.
STM32F405RGT6 by STMicroelectronics is a 32-bit microcontroller with 2/3.3V power supplies, 16 external interrupts, and 196608 RAM bytes. Ideal for industrial applications, it features CAN(2), I2C(3), SPI(3) connectivity options and operates at a max clock frequency of 26 MHz. With low power mode and DMA support, it offers versatile performance in compact dimensions.