R1, R3, R4, R6, R8, R9, R11, R13, R14, R17, R19, R20, R22, R23, R24, R25 - Resistor 2k2
R2, R7, R12, R18 - Resistor 4k7
R5, R10, R15 - Resistor 1k5
R16 - Resistor 470
R21 - Resistor 100
Q1, Q3, Q5, Q7 - Transistor BC557
Q2, Q4, Q6, Q8, Q9 - Transistor BC547
D1…D6 -Diod 1N4148 or KD522
BU1- Straight pin-header, division 2x16, division 2.54
BU1- Straight pin-header, division 1x5, division 2.54
BU3 - Strip connector socket 2x16, division 2.54
BU4 - Strip connector socket 2x16, division 2.54
BU5 – Straight pin-header, division 2.54, 2x16