Flux PCB Help

Worked for 19 sec

Manufacturing checks passed with 0 airwires and no blocking DRC errors. Exported files:

knock-controller-gerbers.zip

knock-controller-bom.csv

Designator	Quantity	Element UIDs	Part UID	Specification	Part Type	JLCPCB Part Class	Operating Temperature	Role	Role Details	Connector Type	Manufacturer Part Number	LCSC Part Number	Manufacturer Name	License	Package or Case Code	Voltage Rating	Forward Voltage	Max Reverse Voltage	Diode Type	Resistance	Tolerance	Capacitance	Capacitor Type	Power Rating	Package	Designator Prefix	Functional Group	Pitch	Gender	Rows	Positions	Exclude from BOM	Throw Configuration
C1	1	6e61b646-d47e-4e37-84d1-fa055d9c65d9	46707925-236f-106b-e676-afa2757aa1d6	Non-Polarized Capacitor, 47uF, SMD_1210_3225Metric	Non-Polarized Capacitor			Bulk	47 uF protected 5 V rail bulk capacitor; allow 1210 footprint for DC-bias margin							10V					%	47uF	Ceramic		SMD_1210_3225Metric	C	Power Entry
C2,C21,C22,C23,C3	5	18d16db8-6f04-43cb-a47a-f7bc7c954b84,2a91ddaa-1be1-4485-adc3-a7bad8e54355,91692775-9bcd-4f4a-8f50-a3b132d70c36,acf76591-d17d-4b97-9409-c9e7c67228ce,cfafa94f-d1cc-41d4-8e6a-5bf09c08b29b	46707925-236f-106b-e676-afa2757aa1d6	Non-Polarized Capacitor, 100nF, SMD_0603_1608Metric	Non-Polarized Capacitor			Decoupling,Filtering	U1 MCP6004 VDD local 100 nF bypass; place within 2 mm of pin 4,U2 ATtiny1616 VDD local 100 nF bypass at pins 1/20,Calibration ADC wiper filter capacitor							10V					%	100nF	Ceramic		SMD_0603_1608Metric	C	Power Entry,Calibration
C5	1	72ae56bc-2a60-457e-928b-0bca9c15900a	46707925-236f-106b-e676-afa2757aa1d6	Non-Polarized Capacitor, 10uF, SMD_0805_2012Metric	Non-Polarized Capacitor			Filtering	Mid-rail divider low-noise filter							10V					%	10uF	Ceramic		SMD_0805_2012Metric	C	Voltage Reference
C10,C11,C16,C17	4	0a4f323c-23b8-4102-ad34-1afde028ec37,34ef9d8b-7c60-4159-808a-b3038a3482a6,491a2af3-bc41-424e-bdaf-9fb27483d2eb,f522ca3c-a366-406d-b5f4-c8c38d3ce0b7	46707925-236f-106b-e676-afa2757aa1d6	Non-Polarized Capacitor, 47pF, SMD_0603_1608Metric	Non-Polarized Capacitor			Filtering	CH1 7.20 kHz low-pass C0G/NP0 frequency capacitor,CH2 7.20 kHz low-pass C0G/NP0 frequency capacitor							50V					%	47pF	Ceramic		SMD_0603_1608Metric	C	Sensor Channel 1,Sensor Channel 2
C12,C13,C6,C7	4	411d9394-a8c4-44dd-bf8d-a807f7ffebdd,7647e5d2-ec9a-409b-bc8f-2a48fe9787e2,91a7e854-5eb9-467e-b67d-af435569d98c,ba840ee0-0786-43e2-98a5-246a997f8272	46707925-236f-106b-e676-afa2757aa1d6	Non-Polarized Capacitor, 4.7nF, SMD_0805_2012Metric	Non-Polarized Capacitor			Coupling	CH2 positive lead 4.7 nF C0G/NP0 AC coupling,CH2 negative lead 4.7 nF C0G/NP0 AC coupling,CH1 negative lead 4.7 nF C0G/NP0 AC coupling,CH1 positive lead 4.7 nF C0G/NP0 AC coupling							50V					%	4.7nF	Ceramic		SMD_0805_2012Metric	C	Sensor Channel 2,Sensor Channel 1
C14,C15,C8,C9	4	08ad647d-8d58-4c09-a3a7-e126f3b0593e,5a1ac727-32da-40d1-9054-c5b0b9b59c4a,734a6c99-e9b3-4551-b0ff-2a6e843ed27f,fe4dc76e-486c-4735-a8db-99bf10bd6c79	46707925-236f-106b-e676-afa2757aa1d6	Non-Polarized Capacitor, 220pF, SMD_0603_1608Metric	Non-Polarized Capacitor			Filtering	CH1 7.23 kHz high-pass C0G/NP0 frequency capacitor,CH2 7.23 kHz high-pass C0G/NP0 frequency capacitor							50V					%	220pF	Ceramic		SMD_0603_1608Metric	C	Sensor Channel 1,Sensor Channel 2
C18,C19	2	0734564a-7b97-4a43-943f-83a0e228923f,427e7648-7d84-4084-afda-d8d518548d75	46707925-236f-106b-e676-afa2757aa1d6	Non-Polarized Capacitor, 1nF, SMD_0603_1608Metric	Non-Polarized Capacitor			Filtering	ADC input reservoir/anti-RF capacitor							10V					%	1nF	Ceramic		SMD_0603_1608Metric	C	ADC Interface
C20	1	c9eb30a3-c538-436f-a565-35f3459bf157	46707925-236f-106b-e676-afa2757aa1d6	Non-Polarized Capacitor, 10nF, SMD_0603_1608Metric	Non-Polarized Capacitor			Filtering	RPM input deglitch capacitor; with R24+R25 and R26 gives about 1.24 kHz cutoff and 128 us time constant							10V					%	10nF	Ceramic		SMD_0603_1608Metric	C	RPM Input
C24,C25,C4	3	1d588ef6-b5eb-4624-b865-6a4f58a486e2,7366c42d-a5d7-4fab-9a58-6238a5d9d260,ac88cb2b-0e37-4f52-ae48-30ff2ea93509	46707925-236f-106b-e676-afa2757aa1d6	Non-Polarized Capacitor, 1uF, SMD_0805_2012Metric	Non-Polarized Capacitor			Filtering,Bulk	PWM-to-analog reconstruction filter capacitor,Local analog 5 V bulk capacitor							10V					%	1uF	Ceramic		SMD_0805_2012Metric	C	Analog Output,Power Entry
D1,D2,D3,D4,D5,D6	6	2fe18a8a-5777-4c04-820a-a65b6e5014e9,49b9a79a-aedf-4962-a2cf-94af9c037ba1,6670050a-b317-426d-9a18-037ddd41128e,8e6ed777-ab82-4e49-a4a3-80623fcf1dba,9ece9378-a419-4887-a65f-08381540d880,a9c9446e-dda9-4d35-a89b-f66ca4ad8731	ba6d63f0-6fb5-42f5-8cc4-5cded74df808	ESD Protection Devices, SOD-323_L1.7-W1.3-LS2.5-BI	ESD Protection Devices	Extended Part		Protection	5 V low-capacitance bidirectional ESD protection		PESD5V0S1BA	C2827694	TECH PUBLIC(台舟)	https://creativecommons.org/licenses/by/4.0/	SOD-323_L1.7-W1.3-LS2.5-BI		0.8V	5V	TVS Diode							D	External Interface Protection
D7,D8	2	0541e863-dcd9-4daa-9dbe-b9a51888ca9a,46504fad-0211-4aa1-8048-61c27c6ef6af	6200898e-aa2a-43f5-bb99-23055d0da5ed	Schottky Barrier Diodes (SBD), SOT-23-3_L3.0-W1.7-P0.95-LS2.9-BR	Schottky Barrier Diodes (SBD)	Extended Part		Protection,Clamping	RPM input clamp to local 5 V and GND rails,ECU output rail clamp; pin 3 signal, pin 1 GND, pin 2 +5 V		BAT54S-TP	C194858	MCC(美微科)		SOT-23-3_L3.0-W1.7-P0.95-LS2.9-BR											D	RPM Input,Analog Output
J1,J2,J3,J4,J5	5	00d1bd2f-6c82-4ea7-8cf1-fe6b206829e4,2466980d-7b6c-46c9-8401-15905131b329,8f1e0d19-76a3-4847-bbb4-e9e981e95a63,98beab84-d6c3-44e1-aaa3-550dd8e2ee20,ec9072f2-4708-4cca-90b6-0875d23d2ecb	015f4743-44ed-4b3a-9d98-69469d9853cd	Wire To Board / Wire To Wire Connector, CONN-TH_B2B-XH-A-LF-SN	Wire To Board / Wire To Wire Connector	Extended Part		Connector	JST XH 2-pin external harness interface	Wire To Board / Wire To Wire Connector	B2B-XH-A(LF)(SN)	C158012	JST		CONN-TH_B2B-XH-A-LF-SN											CN	External Connectors	2.5mm	Male	1	2
J6	1	6ff319bd-6fcf-4511-85d7-373a5bfa6112	195a1e6d-d602-fa94-8dd2-8b35fb4549dc	Connector	Connector			Programming	AVR UPDI programming and debug interface		61200621621		Würth Elektronik													J	Programming					false
R1,R11,R14,R2,R21,R24,R27,R33,R4,R6	10	21bbfde6-e670-4052-9c65-5b22d8e602f7,38a4336b-b264-46da-8490-89d08bd73d55,59a69bba-3234-43f3-b990-f94ea7263d07,663027ce-6e4a-48c6-b520-824d396c2758,80b11c8c-a3b5-4fcb-924f-285b0b682980,82e06434-7f84-49c5-83ba-aacf86b2b44c,8897cf8e-dfef-4973-9886-3263b2ed1722,90e690b8-5c2e-4792-a968-a143ed3b9604,97bb6f18-bcff-4436-be2b-6d84abc5e05d,b66a6f2a-9e03-45c2-870e-525cf77505b1	b67f50a9-ae5e-10ea-9c3c-d377e2ab3b2d	Resistor, 10kΩ, SMD_0603_1608Metric	Resistor			Voltage Division,Current Limiting,Pull Up / Down,Filtering	2.5 V mid-rail divider,Sensor 2 lead transient current limiting,Channel enable input pull-up,PWM reconstruction first pole,Sensor 1 lead transient current limiting,Tach connector series protection; limits current into BAT54S rail clamp for 5 V or higher legacy tach pulses							V				10kΩ	1%				SMD_0603_1608Metric	R	Voltage Reference,Sensor Channel 2,User Selection,Analog Output,Sensor Channel 1,RPM Input
R3	1	3f702b62-9d35-43ca-af18-68b254e6264e	b67f50a9-ae5e-10ea-9c3c-d377e2ab3b2d	Resistor, 4.7Ω, SMD_0603_1608Metric	Resistor			Current Limiting	5 V input series EMI and transient current limiter							V				4.7Ω	1%			0.125W	SMD_0603_1608Metric	R	Power Entry
R10,R15,R18,R26,R7	5	077bdbac-a216-45de-a89b-632690b5eb9d,19a4b3e4-e868-4423-885b-c3875d244c8d,92bc97ac-2102-4cf1-910d-43dcfdb31935,a2b6f988-e1de-4ce2-b88c-22c6591f3073,cf895688-c58e-44d5-bb11-e7037e34a013	b67f50a9-ae5e-10ea-9c3c-d377e2ab3b2d	Resistor, 100kΩ, SMD_0603_1608Metric	Resistor			Filtering,Pull Up / Down	CH2 matched differential filter input resistor,CH1 matched differential filter input resistor,RPM input pull-down							V				100kΩ	1%				SMD_0603_1608Metric	R	Sensor Channel 2,Sensor Channel 1,RPM Input
R12,R17,R20,R9	4	14a4f99f-9173-4235-8d6d-8a2f39fa0473,41822c29-5cbf-4381-bab8-ec8a4f332f52,9868a845-59e3-42fc-96a5-920dfd697d82,cd80902c-93fc-43eb-828e-a50f83500105	b67f50a9-ae5e-10ea-9c3c-d377e2ab3b2d	Resistor, 470kΩ, SMD_0603_1608Metric	Resistor			Feedback	CH1 matched differential filter feedback/reference resistor,CH2 matched differential filter feedback/reference resistor							V				470kΩ	1%				SMD_0603_1608Metric	R	Sensor Channel 1,Sensor Channel 2
R13,R16,R5,R8	4	9f764def-50c3-434b-a90f-51c1e2722fb3,dc850b46-5b42-4948-9d21-7dbb1a716b91,ef08f995-aa80-46a5-92f9-bd2e8761c251,f289b934-d113-4c58-84e2-840ce456d366	b67f50a9-ae5e-10ea-9c3c-d377e2ab3b2d	Resistor, 1MΩ, SMD_0603_1608Metric	Resistor			Biasing	Sensor 2 lead bias to buffered 2.5 V reference,Sensor 1 lead bias to buffered 2.5 V reference							V				1MΩ	1%				SMD_0603_1608Metric	R	Sensor Channel 2,Sensor Channel 1
R19,R22,R25,R32	4	5e82b5e1-b537-4051-a5b8-8650f42a438a,616b89bb-9dad-4fb8-b5cc-ce90b7f0d6a7,86497a95-b585-4e00-9c44-fa4eb91ece23,d1c856d3-70a2-4719-a73d-ebdbbdb2d739	b67f50a9-ae5e-10ea-9c3c-d377e2ab3b2d	Resistor, 4.7kΩ, SMD_0603_1608Metric	Resistor			Pull Up / Down,Filtering	PWM startup/fault pull-down,RPM input series filter/isolation resistor; total tach source path is R24+R25=14.7 kOhm,ADC source isolation and RC filter resistor							V				4.7kΩ	1%				SMD_0603_1608Metric	R	Analog Output,RPM Input,ADC Interface
R23,R28,R29,R36	4	6947fcef-2563-4b7c-a468-5d0fb50c9773,6b166438-9d06-42f7-8d3b-88c5df05988f,8cd8842f-57ca-40ae-9a3f-b725720da2ac,b6cf8b7d-1d88-4041-8077-d6d37f08420c	b67f50a9-ae5e-10ea-9c3c-d377e2ab3b2d	Resistor, 1kΩ, SMD_0603_1608Metric	Resistor			Current Limiting	Calibration wiper ADC isolation,ECU analog output series protection and capacitive-load isolation							V				1kΩ	1%				SMD_0603_1608Metric	R	Calibration,Analog Output
R34	1	8dcffde3-8e14-434d-8072-c11afc7f1ff5	b67f50a9-ae5e-10ea-9c3c-d377e2ab3b2d	Resistor, 40.2kΩ, SMD_0603_1608Metric	Resistor			Signal Mixing / Detection	PWM reconstruction second resistor; R33+R34=50.2 kOhm against R35=200 kOhm maps 0-100% duty to 0.5016-4.4984 V							V				40.2kΩ	1%				SMD_0603_1608Metric	R	Analog Output
R35	1	53851b3b-6040-4e4e-ac1c-7a01ad38d3cb	b67f50a9-ae5e-10ea-9c3c-d377e2ab3b2d	Resistor, 200kΩ, SMD_0603_1608Metric	Resistor			Signal Mixing / Detection	2.5 V reference weighting; with R33+R34 produces 0.5016 V quiet/startup and 4.4984 V full-scale endpoints							V				200kΩ	1%				SMD_0603_1608Metric	R	Analog Output
R37	1	df768fa1-cd85-4dc8-80a3-2a4a6749bb0b	b67f50a9-ae5e-10ea-9c3c-d377e2ab3b2d	Resistor, 470Ω, SMD_0603_1608Metric	Resistor			Current Limiting	UPDI programmer line isolation							V				470Ω	1%				SMD_0603_1608Metric	R	Programming
RV1,RV2,RV3	3	5138c9fa-a350-4491-b035-8b39d0afbe3b,5a238dfa-2f23-4581-b6f6-eca0234d413a,65e1bd8e-3d70-4e7e-9cd3-537f13c9064b	6661070d-5ecf-4ec1-8f0a-3c45f4c069cd	Variable Resistors/Potentiometers, RES-ADJ-TH_3P-L9.5-W9.5-P2.54-BR-BS	Variable Resistors/Potentiometers	Extended Part		Calibration	10 kOhm sealed user trim control		3386P-1-103LF	C116281	BOURNS		RES-ADJ-TH_3P-L9.5-W9.5-P2.54-BR-BS											R	Calibration
SW1	1	5a8f9565-6e30-4506-96d3-c2ca2aa76d74	ec47c653-3edd-4f31-89c4-46c7c4cad25f	DIP Switches, SW-SMD_DSHP02TSGER	DIP Switches	Extended Part	-40 to +85℃	Configuration	Two SPST channel-enable switches		DSHP02TSGER	C367376	YE		SW-SMD_DSHP02TSGER											SW	User Selection						SPST
U1	1	9ba01ae2-4d5e-499d-b92f-8e73aca896de	00aadda5-2eba-424a-9a60-675feeaea541	Operational Amplifier (OP-AMP), SOIC127P600X175-14N	Operational Amplifier (OP-AMP)			Analog Processing	5 V quad RRIO amplifier: VREF buffer, CH1/CH2 differential band-pass, output buffer		MCP6004T-I/SL		Microchip Technology	https://creativecommons.org/licenses/by/4.0/	SOIC127P600X175-14N											IC	Analog Processing
U2	1	d37f4a96-b430-4fc5-a58d-d32b350ef917	f20e338b-23fb-4828-bd68-766ecfd7336f	Microcontroller, SOIC-20_L13.0-W7.6-P1.27-LS10.3-BL	Microcontroller	Extended Part		Microcontroller	ATtiny1616 5 V MCU: PA4/PA5 analog channels, PA6/PA7/PB5 calibration ADCs, PB4 tach edge input, PB0 TCA0 WO0 PWM, PB2/PB3 channel selects, PA0 UPDI		ATTINY1616-SFR	C145558	MICROCHIP(美国微芯)		SOIC-20_L13.0-W7.6-P1.27-LS10.3-BL											U	Digital Processing

knock-controller-bom-jlcpcb.csv

Comment	Designator	Footprint	LCSC Part #
Non-Polarized Capacitor 47uF SMD_1210_3225Metric	C1
Non-Polarized Capacitor 100nF SMD_0603_1608Metric	C2, C21, C22, C23, C3
Non-Polarized Capacitor 10uF SMD_0805_2012Metric	C5
Non-Polarized Capacitor 47pF SMD_0603_1608Metric	C10, C11, C16, C17
Non-Polarized Capacitor 4.7nF SMD_0805_2012Metric	C12, C13, C6, C7
Non-Polarized Capacitor 220pF SMD_0603_1608Metric	C14, C15, C8, C9
Non-Polarized Capacitor 1nF SMD_0603_1608Metric	C18, C19
Non-Polarized Capacitor 10nF SMD_0603_1608Metric	C20
Non-Polarized Capacitor 1uF SMD_0805_2012Metric	C24, C25, C4
PESD5V0S1BA	D1, D2, D3, D4, D5, D6	SOD-323_L1.7-W1.3-LS2.5-BI	C2827694
BAT54S-TP	D7, D8	SOT-23-3_L3.0-W1.7-P0.95-LS2.9-BR	C194858
B2B-XH-A(LF)(SN)	J1, J2, J3, J4, J5	CONN-TH_B2B-XH-A-LF-SN	C158012
61200621621	J6
Resistor 10kΩ SMD_0603_1608Metric	R1, R11, R14, R2, R21, R24, R27, R33, R4, R6
Resistor 4.7Ω SMD_0603_1608Metric	R3
Resistor 100kΩ SMD_0603_1608Metric	R10, R15, R18, R26, R7
Resistor 470kΩ SMD_0603_1608Metric	R12, R17, R20, R9
Resistor 1MΩ SMD_0603_1608Metric	R13, R16, R5, R8
Resistor 4.7kΩ SMD_0603_1608Metric	R19, R22, R25, R32
Resistor 1kΩ SMD_0603_1608Metric	R23, R28, R29, R36
Resistor 40.2kΩ SMD_0603_1608Metric	R34
Resistor 200kΩ SMD_0603_1608Metric	R35
Resistor 470Ω SMD_0603_1608Metric	R37
3386P-1-103LF	RV1, RV2, RV3	RES-ADJ-TH_3P-L9.5-W9.5-P2.54-BR-BS	C116281
DSHP02TSGER	SW1	SW-SMD_DSHP02TSGER	C367376
MCP6004T-I/SL	U1	SOIC127P600X175-14N
ATTINY1616-SFR	U2	SOIC-20_L13.0-W7.6-P1.27-LS10.3-BL	C145558

knock-controller-pickplace-openpnp.csv

Ref	Val	Package	PosX	PosY	Rot	Side
C1	47uF	SMD_1210_3225Metric	-2mm	39mm	0	Top
C2	100nF	SMD_0603_1608Metric	3.1mm	-33.7mm	0	Top
C3	100nF	SMD_0603_1608Metric	7.3mm	-1.1mm	0	Top
C4	1uF	SMD_0805_2012Metric	2.8mm	-30.5mm	0	Top
C5	10uF	SMD_0805_2012Metric	1mm	-28mm	0	Top
C6	4.7nF	SMD_0805_2012Metric	-59mm	-34mm	0	Top
C7	4.7nF	SMD_0805_2012Metric	-59mm	-40mm	0	Top
C8	220pF	SMD_0603_1608Metric	-45mm	-34mm	0	Top
C9	220pF	SMD_0603_1608Metric	-45mm	-40mm	0	Top
C10	47pF	SMD_0603_1608Metric	-31mm	-34mm	0	Top
C11	47pF	SMD_0603_1608Metric	-31mm	-40mm	0	Top
C12	4.7nF	SMD_0805_2012Metric	-59mm	-12mm	0	Top
C13	4.7nF	SMD_0805_2012Metric	-59mm	-18mm	0	Top
C14	220pF	SMD_0603_1608Metric	-45mm	-12mm	0	Top
C15	220pF	SMD_0603_1608Metric	-45mm	-18mm	0	Top
C16	47pF	SMD_0603_1608Metric	-31mm	-12mm	0	Top
C17	47pF	SMD_0603_1608Metric	-31mm	-18mm	0	Top
C18	1nF	SMD_0603_1608Metric	12mm	-16mm	0	Top
C19	1nF	SMD_0603_1608Metric	20mm	-12mm	0	Top
C20	10nF	SMD_0603_1608Metric	61mm	29mm	0	Top
C21	100nF	SMD_0603_1608Metric	29mm	24mm	0	Top
C22	100nF	SMD_0603_1608Metric	40mm	9mm	0	Top
C23	100nF	SMD_0603_1608Metric	28mm	0mm	0	Top
C24	1uF	SMD_0805_2012Metric	52mm	-21mm	0	Top
C25	1uF	SMD_0805_2012Metric	64mm	-28mm	0	Top
D1		SOD-323_L1.7-W1.3-LS2.5-BI	-64mm	-34mm	0	Top
D2		SOD-323_L1.7-W1.3-LS2.5-BI	-64mm	-40mm	0	Top
D3		SOD-323_L1.7-W1.3-LS2.5-BI	-64mm	-12mm	0	Top
D4		SOD-323_L1.7-W1.3-LS2.5-BI	-64mm	-18mm	0	Top
D5		SOD-323_L1.7-W1.3-LS2.5-BI	-18mm	40mm	0	Top
D6		SOD-323_L1.7-W1.3-LS2.5-BI	70mm	-21mm	0	Top
D7		SOT-23-3_L3.0-W1.7-P0.95-LS2.9-BR	65mm	29mm	0	Top
D8		SOT-23-3_L3.0-W1.7-P0.95-LS2.9-BR	70mm	-28mm	0	Top
J1		CONN-TH_B2B-XH-A-LF-SN	-75.94mm	-36mm	90	Top
J2		CONN-TH_B2B-XH-A-LF-SN	-75.94mm	-16mm	90	Top
J3		CONN-TH_B2B-XH-A-LF-SN	-10mm	45.94mm	0	Top
J4		CONN-TH_B2B-XH-A-LF-SN	75.9399mm	26mm	270	Top
J5		CONN-TH_B2B-XH-A-LF-SN	75.9399mm	-24mm	270	Top
J6			16mm	-45mm	270	Top
R1	10kΩ	SMD_0603_1608Metric	-3mm	-31mm	0	Top
R2	10kΩ	SMD_0603_1608Metric	-69mm	-40mm	0	Top
R3	4.7Ω	SMD_0603_1608Metric	-10mm	38mm	0	Top
R4	10kΩ	SMD_0603_1608Metric	-6mm	-28mm	0	Top
R5	1MΩ	SMD_0603_1608Metric	-52mm	-40mm	0	Top
R6	10kΩ	SMD_0603_1608Metric	-69mm	-34mm	0	Top
R7	100kΩ	SMD_0603_1608Metric	-38mm	-40mm	0	Top
R8	1MΩ	SMD_0603_1608Metric	-52mm	-34mm	0	Top
R9	470kΩ	SMD_0603_1608Metric	-22mm	-38mm	0	Top
R10	100kΩ	SMD_0603_1608Metric	-38mm	-34mm	0	Top
R11	10kΩ	SMD_0603_1608Metric	-69mm	-18mm	0	Top
R12	470kΩ	SMD_0603_1608Metric	-22mm	-32mm	0	Top
R13	1MΩ	SMD_0603_1608Metric	-52mm	-18mm	0	Top
R14	10kΩ	SMD_0603_1608Metric	-69mm	-12mm	0	Top
R15	100kΩ	SMD_0603_1608Metric	-38mm	-18mm	0	Top
R16	1MΩ	SMD_0603_1608Metric	-52mm	-12mm	0	Top
R17	470kΩ	SMD_0603_1608Metric	-24mm	-18mm	0	Top
R18	100kΩ	SMD_0603_1608Metric	-38mm	-12mm	0	Top
R19	4.7kΩ	SMD_0603_1608Metric	15mm	-12mm	0	Top
R20	470kΩ	SMD_0603_1608Metric	-24mm	-12mm	0	Top
R21	10kΩ	SMD_0603_1608Metric	25mm	16mm	0	Top
R22	4.7kΩ	SMD_0603_1608Metric	7mm	-16mm	0	Top
R23	1kΩ	SMD_0603_1608Metric	36mm	5mm	0	Top
R24	10kΩ	SMD_0603_1608Metric	69mm	29mm	0	Top
R25	4.7kΩ	SMD_0603_1608Metric	65mm	23mm	0	Top
R26	100kΩ	SMD_0603_1608Metric	61mm	23mm	0	Top
R27	10kΩ	SMD_0603_1608Metric	25mm	12mm	0	Top
R28	1kΩ	SMD_0603_1608Metric	26mm	-7mm	0	Top
R29	1kΩ	SMD_0603_1608Metric	25mm	22mm	0	Top
R32	4.7kΩ	SMD_0603_1608Metric	46mm	-24mm	0	Top
R33	10kΩ	SMD_0603_1608Metric	52mm	-28mm	0	Top
R34	40.2kΩ	SMD_0603_1608Metric	58mm	-28mm	0	Top
R35	200kΩ	SMD_0603_1608Metric	58mm	-21mm	0	Top
R36	1kΩ	SMD_0603_1608Metric	64mm	-21mm	0	Top
R37	470Ω	SMD_0603_1608Metric	26mm	-43mm	0	Top
RV1		RES-ADJ-TH_3P-L9.5-W9.5-P2.54-BR-BS	35mm	17mm	0	Top
RV2		RES-ADJ-TH_3P-L9.5-W9.5-P2.54-BR-BS	48mm	5mm	0	Top
RV3		RES-ADJ-TH_3P-L9.5-W9.5-P2.54-BR-BS	35mm	-7mm	0	Top
SW1		SW-SMD_DSHP02TSGER	35mm	33mm	0	Top
U1		SOIC127P600X175-14N	8.5569mm	-33.6607mm	0	Top
U2		SOIC-20_L13.0-W7.6-P1.27-LS10.3-BL	15.8831mm	4.0013mm	0	Top

knock-controller-pickplace-jlcpcb.csv

Designator	Layer	Rotation	Mid X	Mid Y
C1	Top	0	-2mm	39mm
C2	Top	0	3.1mm	-33.7mm
C3	Top	0	7.3mm	-1.1mm
C4	Top	0	2.8mm	-30.5mm
C5	Top	0	1mm	-28mm
C6	Top	0	-59mm	-34mm
C7	Top	0	-59mm	-40mm
C8	Top	0	-45mm	-34mm
C9	Top	0	-45mm	-40mm
C10	Top	0	-31mm	-34mm
C11	Top	0	-31mm	-40mm
C12	Top	0	-59mm	-12mm
C13	Top	0	-59mm	-18mm
C14	Top	0	-45mm	-12mm
C15	Top	0	-45mm	-18mm
C16	Top	0	-31mm	-12mm
C17	Top	0	-31mm	-18mm
C18	Top	0	12mm	-16mm
C19	Top	0	20mm	-12mm
C20	Top	0	61mm	29mm
C21	Top	0	29mm	24mm
C22	Top	0	40mm	9mm
C23	Top	0	28mm	0mm
C24	Top	0	52mm	-21mm
C25	Top	0	64mm	-28mm
D1	Top	0	-64mm	-34mm
D2	Top	0	-64mm	-40mm
D3	Top	0	-64mm	-12mm
D4	Top	0	-64mm	-18mm
D5	Top	0	-18mm	40mm
D6	Top	0	70mm	-21mm
D7	Top	0	65mm	29mm
D8	Top	0	70mm	-28mm
J1	Top	90	-75.94mm	-36mm
J2	Top	90	-75.94mm	-16mm
J3	Top	0	-10mm	45.94mm
J4	Top	270	75.9399mm	26mm
J5	Top	270	75.9399mm	-24mm
J6	Top	270	16mm	-45mm
R1	Top	0	-3mm	-31mm
R2	Top	0	-69mm	-40mm
R3	Top	0	-10mm	38mm
R4	Top	0	-6mm	-28mm
R5	Top	0	-52mm	-40mm
R6	Top	0	-69mm	-34mm
R7	Top	0	-38mm	-40mm
R8	Top	0	-52mm	-34mm
R9	Top	0	-22mm	-38mm
R10	Top	0	-38mm	-34mm
R11	Top	0	-69mm	-18mm
R12	Top	0	-22mm	-32mm
R13	Top	0	-52mm	-18mm
R14	Top	0	-69mm	-12mm
R15	Top	0	-38mm	-18mm
R16	Top	0	-52mm	-12mm
R17	Top	0	-24mm	-18mm
R18	Top	0	-38mm	-12mm
R19	Top	0	15mm	-12mm
R20	Top	0	-24mm	-12mm
R21	Top	0	25mm	16mm
R22	Top	0	7mm	-16mm
R23	Top	0	36mm	5mm
R24	Top	0	69mm	29mm
R25	Top	0	65mm	23mm
R26	Top	0	61mm	23mm
R27	Top	0	25mm	12mm
R28	Top	0	26mm	-7mm
R29	Top	0	25mm	22mm
R32	Top	0	46mm	-24mm
R33	Top	0	52mm	-28mm
R34	Top	0	58mm	-28mm
R35	Top	0	58mm	-21mm
R36	Top	0	64mm	-21mm
R37	Top	0	26mm	-43mm
RV1	Top	0	35mm	17mm
RV2	Top	0	48mm	5mm
RV3	Top	0	35mm	-7mm
SW1	Top	0	35mm	33mm
U1	Top	0	8.5569mm	-33.6607mm
U2	Top	0	15.8831mm	4.0013mm

3D Model (STEP)
Loading 3D model...

Note: 60 generic resistors/capacitors still lack orderable MPNs, so turnkey assembly requires assigning those parts before ordering.

Assign passive MPNs

Review exported Gerbers

Prepare JLC assembly

Create assembly guide

Files

Schematic

Layout

Preview

C19

Capacitance

1nF

Capacitance

220pF

C11

Capacitance

47pF

Capacitance

100nF

C25

Capacitance

1uF

Capacitance

100nF

C10

Capacitance

47pF

C12

Capacitance

4.7nF

C18

Capacitance

1nF

C16

Capacitance

47pF

C14

Capacitance

220pF

Capacitance

47uF

Capacitance

10uF

C15

Capacitance

220pF

C24

Capacitance

1uF

C13

Capacitance

4.7nF

C21

Capacitance

100nF

Capacitance

4.7nF

Capacitance

1uF

C22

Capacitance

100nF

Capacitance

4.7nF

C20

Capacitance

10nF

C23

Capacitance

100nF

C17

Capacitance

47pF

Capacitance

220pF

R18

Resistance

100kΩ

R12

Resistance

470kΩ

R15

Resistance

100kΩ

Resistance

10kΩ

R11

Resistance

10kΩ

Resistance

4.7Ω

R20

Resistance

470kΩ

RV2

R35

Resistance

200kΩ

R14

Resistance

10kΩ

RV3

SW1

R32

Resistance

4.7kΩ

R25

Resistance

4.7kΩ

RV1

Resistance

10kΩ

R29

Resistance

1kΩ

R36

Resistance

1kΩ

R21

Resistance

10kΩ

R27

Resistance

10kΩ

R22

Resistance

4.7kΩ

R33

Resistance

10kΩ

R23

Resistance

1kΩ

R34

Resistance

40.2kΩ

Resistance

10kΩ

R10

Resistance

100kΩ

Resistance

10kΩ

R17

Resistance

470kΩ

R16

Resistance

1MΩ

Resistance

100kΩ

R24

Resistance

10kΩ

R28

Resistance

1kΩ

Resistance

470kΩ

R26

Resistance

100kΩ

R19

Resistance

4.7kΩ

Resistance

1MΩ

R37

Resistance

470Ω

R13

Resistance

1MΩ

Resistance

1MΩ

Design Notes

Source Reconstruction

The schematic was reconstructed from jullle/1p8t-knock-signal-conditioner using the exact component library versions, designators, values, packages, named nets, pin memberships, functional groups, and explicit no-connect assignments. Final count is 80 components and 47 nets.

Analog Front Ends

Both channels are electrically symmetric. J1/J2 remain differential and ungrounded. The protected and biased input networks feed matched U1B/U1C active filters. Source verification produced:

Peak frequency: 6.950 kHz.
Peak differential gain: 2.1647 V/V.
Relative -3 dB points: 2.909 kHz and 16.540 kHz.
Quiescent output bias: 2.500 V.
100 mV peak differential at 6.9 kHz gives about 216.5 mV peak at CH1_AFE/CH2_AFE.

Output Network

PB0 produces 31.25 kHz PWM. R33/C24 and R34/C25 reconstruct the signal; R35 adds the 2.5 V reference weighting and U1D buffers it. R36, D6, and D8 protect the ECU connection.

VOUT = 0.501599 + 3.996803 × D volts.

Table

Duty	Expected output
0%	0.5016 V
25%	1.5008 V
50%	2.5000 V
75%	3.4992 V
100%	4.4984 V

RPM Input

J4 pin 1 passes through R24 and the D7 rail clamp, then R25/R26/C20 to PB4. The RC input has about 128 µs time constant and 1.242 kHz cutoff. For a 0–5 V source the expected MCU high level is approximately 4.359 V. Firmware defaults to 2 pulses/revolution, so 8000 RPM is 266.67 Hz.

PCB Implementation

Board: 160 × 100 mm, rounded rectangular outline.
Stackup: four layers; Top signal, Mid-Layer 1 GND plane, Mid-Layer 2 +5 V plane, Bottom signal.
All parts are top-side.
J1/J2 protection is adjacent to the input connectors.
Analog channels are arranged as matched lanes around U1.
U2 support, calibration, selection, and UPDI are grouped together.
RPM and analog output blocks are near J4/J5 and separated from the sensitive sensor paths.
Power/GND minimum trace width is 0.5 mm; other routing uses standard signal widths.
Auto-routing converged with zero airwires. One router advisory stated that special decoupling routing rules were bypassed, but post-route decoupling placement, GND-return, pad-access, overlap, airwire, and stackup checks returned no open warning/error findings.

Firmware Processing

The firmware uses direct peripheral registers:

ADC0 manually sequences PA4, PA5, PA6, PA7, and PB5.
Waveform samples use slow baseline tracking, absolute magnitude, and a fast envelope IIR.
RV1/RV2 provide 0.5×–1.5× digital sensitivity scaling.
Active-low PB3/PB2 selections choose channel 1, channel 2, or maximum-of-both.
PB4 edge timing uses an extended TCB0 timebase with short-pulse rejection, 1/4 IIR period filtering, and a 1.5 s timeout.
RV3 controls RPM-dependent noise-floor rise.
Persistent ADC rail faults force duty to zero, corresponding to the safe 0.5016 V output.
A 1 s watchdog resets the MCU if the main loop stalls.

Verification Status

Focused electrical ERC: no open electrical errors/warnings.
Airwires: 0.
Critical PCB DRC findings: 0 after route.
Manufacturing-only findings: 60 missing MPNs on the 35 generic resistors and 25 generic capacitors. Values, tolerances/ratings, and footprints are assigned; purchasing MPN selection remains a manufacturing sourcing task.
Firmware compilation could not be executed in the available sandbox because avr-gcc, AVR device headers, and network installation were unavailable. The source targets the official Microchip AVR8 GNU toolchain or an equivalent recent toolchain with ATtiny1616 support.

Source Reconstruction
Analog Front Ends
Output Network
RPM Input
PCB Implementation
Firmware Processing
Verification Status