ATMEGA64 ATMEGA64A-AU TQFP64 SMD MCU
Datasheet: http://ww1.microchip.com/downloads/en/DeviceDoc/atmel-2490-8-bit-avr-microcontroller-atmega64-l_datasheet.pdf
ATTINY13A-PU DIP-8 8-Bit Programmable Flash Microcontroller
Datasheet: http://ww1.microchip.com/downloads/en/DeviceDoc/doc8126.pdf
ATTINY44A ATTINY44A-SSU SOP-14 SMD MCU
Datasheet: http://ww1.microchip.com/downloads/en/devicedoc/8183s.pdf
ATTINY85-20PU DIP-8 AVR Programmable Flash MCU
Datasheet: https://ww1.microchip.com/downloads/en/DeviceDoc/Atmel-2586-AVR-8-bit-Microcontroller-ATtiny25-ATtiny45-ATtiny85_Datasheet.pdf
BC547 TO-92 45V 0.1A low power NPN transistor
Datasheet: http://www.kontest.ru/datasheet/philips/bc847[1].pdf
BC847C SOT23 NPN General Purpose transistor
Datasheet: https://assets.nexperia.com/documents/data-sheet/BC847_SER.pdf
BD139 To-126 1.5A 80V NPN Transistor
Datasheet: https://www.onsemi.com/pub/Collateral/BD139-D.PDF
BTA41 BTA41-600 TO-247 600V TRIAC
Datasheet: https://www.st.com/resource/en/datasheet/bta40.pdf
CD4011BE DIP-14 NAND Gate IC
Datasheet: https://www.ti.com/lit/ds/symlink/cd4011b.pdf
CD4017B DECADE COUNTER DIVIDER IC
Datasheet: https://www.ti.com/lit/ds/symlink/cd4017b.pdf
CN3791 Li-Ion 4A 4.2V SSOP-10 Battery Management IC
Datasheet: https://datasheet.lcsc.com/szlcsc/1810010241_ShangHai-Consonance-Elec-CN3791_C154992.pdf