Circuit

Ongoing

STD Circuit

License: Public Domain

Mode:

Editors' pick

Update time： 2021-11-29 18:40:54

Creation time： 2019-12-05 08:24:30

Description

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Design Drawing

schematic diagram

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PCB

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BOM

ID	Name	Designator	Quantity
1	SN74HC74D	U15,U16,U58,U59,U3,U10,U50,U51	8
2	SN74HC165PW	U26,U36,U45,U46,U8,U9	6
3	74HC139D	U28,U57,U13,U76	4
4	ATtiny44A-PU	U29,U56,U12,U77	4
5	74HC590ADWR	U30,U31,U32,U33,U34,U35,U38,U39,U48,U49,U1,U2,U4,U5,U6,U7	16
6	SN74HC08DR	U40,U47,U78	3
7	8MHz	X2,X3,X1,X4	4
8	CD74HC11E	U11	1
9	USB-AF-90-10X14.4-H6.57	USB1,USB3	2
10	223	C1,C7,C8,C11,C12,C13	6
11	10µ	C3,C10	2
12	Header-Female-2.54_1x2	P2,P3,P4	3
13	2N3904	Q1,Q2,Q3	3
14	1M	R1,R2,R4,R11,R13,R14,R17,R19,R22	9
15	100k	R3,R18	2
16	10k	R5,R12,R16,R20,R21,R23	6
17	100	R6,R15,R9	3
18	2k2	R7	1
19	CD4520BE	U14,U24	2
20	SN74HC573APWR	U17,U23	2
21	LM358P	U18,U20,U37	3
22	NE555PWR	U19,U22	2
23	CD4013BE	U21	1
24	ATTINY44A-SSUR	U25	1
25	SN74HC165PWR	U27	1
26	100u	C2,C4	2
27	960u	C16,C17	2
28	1N4448	D1,D2	2
29	KFT8.5 Silent without lock	KEY1	1
30	1k	R10	1
31	1	R37	1
32	SRD-24VDC-SL-C	RELAY1	1
33	7805	U43	1
34	0.1u	C5,C9,C14,C15	4
35	10u	C6	1
36	100k	R8,R24,R25,R26	4
37	1k	R27,R35	2
38	2k2	R28,R29	2
39	47k	R30,R36	2
40	470k	R31	1
41	100	R32,R33	2
42	120k	R34	1
43	LM393APWR	U41	1
44	MA40S4S	U42,U62,U63,U64,U65,U70,U71	7
45	LM324M	U44	1
46	0.1u	47N	1
47	560p	C18	1
48	47n	C19,C20,C21,C22,C23,C24	6
49	BC337	Q4	1
50	100k	R38	1
51	470	R39	1
52	30k	RP1	1
53	4049	U52,U53,U54,U55,U60,U61,U66,U67,U68,U69,U72,U73,U74,U75	14