Reference layout

TapeLooper BOARD2

TheSlowGrowth-TapeLooper-board2-TapeLooper-layout

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TheSlowGrowth-TapeLooper-board2-TapeLooper-layout

The project archive carries the board, its project file and the upstream licence. The archive is zstd-compressed (tar.zst).

243Placed parts

225Nets

2Copper layers

119.59 × 106.5 mmBoard size

yesRouted

KiCad 8File format

Bill of materials

243 distinct parts

199 resolve to something in the catalog — click through to the footprint.

Ref	Value	Footprint
C101	10u	Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder
C102	100n	Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder
C201	10u	Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder
C202	100n	Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder
C401	10u	Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder
C402	100n	Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder
C403	10u	Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder
C404	100n	Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder
C601	100n	Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder
C602	100n	Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder
C603	100n	Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder
C604	100n	Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder
C701	560p	Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder
C702	100n	Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder
C703	560p	Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder
C704	100n	Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder
C705	560p	Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder
C706	560p	Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder
C801	4u7	Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder
C802	47u	Capacitor_SMD:CP_Elec_6.3x5.8
C803	100n	Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder
C804	100n	Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder
C805	4u7	Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder
C806	4u7	Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder
C807	47u	Capacitor_SMD:CP_Elec_6.3x5.8
C808	100n	Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder
C809	47u	Capacitor_SMD:CP_Elec_6.3x5.8
C810	100n	Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder
C811	4u7	Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder
C901	1n	Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder
C902	1n	Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder
C903	100n	Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder
C904	1n	Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder
C905	1n	Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder
C906	1n	Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder
C907	1n	Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder
C908	100n	Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder
C909	1n	Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder
C910	1n	Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder
D201	LED_RED_GREEN_CA	LED_THT:LED_D3.0mm-3

Show the other 203

D202	LED_RED_GREEN_CA	LED_THT:LED_D3.0mm-3
D203	LED_RED_GREEN_CA	LED_THT:LED_D3.0mm-3
D204	LED_RED_GREEN_CA	LED_THT:LED_D3.0mm-3
D205	LED_RED_GREEN_CA	LED_THT:LED_D3.0mm-3
D206	LED_RED_GREEN_CA	LED_THT:LED_D3.0mm-3
D207	LED_RED_GREEN_CA	LED_THT:LED_D3.0mm-3
D208	LED_RED_GREEN_CA	LED_THT:LED_D3.0mm-3
D401	LED_RED_GREEN_CA	LED_THT:LED_D3.0mm-3
D402	LED_RED_GREEN_CA	LED_THT:LED_D3.0mm-3
D403	LED_RED_GREEN_CA	LED_THT:LED_D3.0mm-3
D404	LED_RED_GREEN_CA	LED_THT:LED_D3.0mm-3
D405	LED_RED_GREEN_CA	LED_THT:LED_D3.0mm-3
D406	LED_RED_GREEN_CA	LED_THT:LED_D3.0mm-3
D407	LED_RED_GREEN_CA	LED_THT:LED_D3.0mm-3
D408	LED_RED_GREEN_CA	LED_THT:LED_D3.0mm-3
D409	LED_RED_GREEN_CA	LED_THT:LED_D3.0mm-3
D410	LED_RED_GREEN_CA	LED_THT:LED_D3.0mm-3
D411	LED_RED_GREEN_CA	LED_THT:LED_D3.0mm-3
D412	LED_RED_GREEN_CA	LED_THT:LED_D3.0mm-3
D413	LED_RED_GREEN_CA	LED_THT:LED_D3.0mm-3
D414	LED_RED_GREEN_CA	LED_THT:LED_D3.0mm-3
D415	LED_RED_GREEN_CA	LED_THT:LED_D3.0mm-3
D416	LED_RED_GREEN_CA	LED_THT:LED_D3.0mm-3
D801	1N5819	Diode_SMD:D_SOD-123
D802	1N5819	Diode_SMD:D_SOD-123
J101	Micro_SD_Card	ell_connectors:PJS008U-3000
J701	PJ398SM	ell_connectors:THONKICONN
J702	PJ398SM	ell_connectors:THONKICONN
J703	PJ398SM	ell_connectors:THONKICONN
J704	PJ398SM	ell_connectors:THONKICONN
J801	Conn_02x05_Odd_Even	Connector_IDC:IDC-Header_2x05_P2.54mm_Vertical
J901	PJ398SM	ell_connectors:THONKICONN
J902	PJ398SM	ell_connectors:THONKICONN
J903	PJ398SM	ell_connectors:THONKICONN
J904	PJ398SM	ell_connectors:THONKICONN
J905	PJ398SM	ell_connectors:THONKICONN
J906	PJ398SM	ell_connectors:THONKICONN
J907	PJ398SM	ell_connectors:THONKICONN
J908	PJ398SM	ell_connectors:THONKICONN
JP801	SolderJumper_2_Bridged	Jumper:SolderJumper-2_P1.3mm_Bridged2Bar_RoundedPad1.0x1.5mm
L801	Bead	Inductor_SMD:L_0603_1608Metric_Pad1.05x0.95mm_HandSolder
L802	Bead	Inductor_SMD:L_0603_1608Metric_Pad1.05x0.95mm_HandSolder
L803	4.7mH	Inductor_SMD:L_1210_3225Metric_Pad1.42x2.65mm_HandSolder
L804	4.7mH	Inductor_SMD:L_1210_3225Metric_Pad1.42x2.65mm_HandSolder
R101	47k	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R102	47k	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R103	47k	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R104	47k	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R105	47k	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R106	47k	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R201	330	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R202	330	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R203	330	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R204	330	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R205	330	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R206	330	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R207	330	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R208	330	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R209	330	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R210	330	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R211	330	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R212	330	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R213	330	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R214	330	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R215	330	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R216	330	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R217	4k7	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R218	4k7	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R219	47k	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R220	10k	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R221	10k	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R222	10k	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R223	10k	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R301	10k	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R302	10k	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R303	10k	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R304	10k	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R305	10k	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R306	10k	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R307	10k	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R308	10k	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R309	10k	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R310	10k	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R311	10k	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R312	10k	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R401	330	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R402	330	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R403	330	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R404	330	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R405	330	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R406	330	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R407	330	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R408	330	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R409	330	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R410	330	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R411	330	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R412	330	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R413	330	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R414	330	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R415	330	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R416	330	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R417	330	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R418	330	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R419	330	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R420	330	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R421	330	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R422	330	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R423	330	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R424	330	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R425	330	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R426	330	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R427	330	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R428	330	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R429	330	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R430	330	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R431	330	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R432	330	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R701	100k	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R702	8k2	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R703	100k	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R704	8k2	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R705	1k	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R706	8k2	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R707	100k	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R708	1k	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R709	8k2	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R710	100k	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R801	2k2	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R802	2k2	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R901	100k	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R902	78k7	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R903	100k	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R904	68k	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R905	481k	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R906	200k	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R907	100k	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R908	78k7	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R909	100k	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R910	68k	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R911	481k	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R912	200k	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R913	100k	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R914	78k7	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R915	100k	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R916	68k	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R917	481k	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R918	200k	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R919	100k	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R920	78k7	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R921	100k	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R922	68k	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R923	481k	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R924	200k	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
RV501	POTENTIOMETER	ell_passives:9mm_pot
RV502	POTENTIOMETER	ell_passives:9mm_pot
RV503	POTENTIOMETER	ell_passives:9mm_pot
RV504	POTENTIOMETER	ell_passives:9mm_pot
RV505	PTA4543-2010CPB103	Potentiometer_THT:Potentiometer_Bourns_PTA4543_Single_Slide
RV506	PTA4543-2010CPB103	Potentiometer_THT:Potentiometer_Bourns_PTA4543_Single_Slide
RV507	PTA4543-2010CPB103	Potentiometer_THT:Potentiometer_Bourns_PTA4543_Single_Slide
RV508	PTA4543-2010CPB103	Potentiometer_THT:Potentiometer_Bourns_PTA4543_Single_Slide
RV509	POTENTIOMETER	ell_passives:9mm_pot
RV510	POTENTIOMETER	ell_passives:9mm_pot
RV511	POTENTIOMETER	ell_passives:9mm_pot
RV512	POTENTIOMETER	ell_passives:9mm_pot
RV513	POTENTIOMETER	ell_passives:9mm_pot
RV514	POTENTIOMETER	ell_passives:9mm_pot
RV515	POTENTIOMETER	ell_passives:9mm_pot
RV516	POTENTIOMETER	ell_passives:9mm_pot
RV517	POTENTIOMETER	ell_passives:9mm_pot
RV518	POTENTIOMETER	ell_passives:9mm_pot
RV519	POTENTIOMETER	ell_passives:9mm_pot
RV520	POTENTIOMETER	ell_passives:9mm_pot
SW201	TL1105SPF250Q	Button_Switch_THT:SW_PUSH_6mm
SW202	TL1105SPF250Q	Button_Switch_THT:SW_PUSH_6mm
SW203	TL1105SPF250Q	Button_Switch_THT:SW_PUSH_6mm
SW204	D6R40F1LFS	ell_special:CK-D6R_Pushbutton
SW301	C&K 7105SYCQE	ell_special:7105SYCQE-1P3T-SP3T-Switch
SW302	D6R90F1LFS	ell_special:CK-D6R_Pushbutton
SW303	C&K 7105SYCQE	ell_special:7105SYCQE-1P3T-SP3T-Switch
SW304	D6R90F1LFS	ell_special:CK-D6R_Pushbutton
SW305	C&K 7105SYCQE	ell_special:7105SYCQE-1P3T-SP3T-Switch
SW306	D6R90F1LFS	ell_special:CK-D6R_Pushbutton
SW307	C&K 7105SYCQE	ell_special:7105SYCQE-1P3T-SP3T-Switch
SW308	D6R90F1LFS	ell_special:CK-D6R_Pushbutton
U101	DAISY_SEED	ell_special:Daisy_Seed
U201	PCA9685PW	Package_SO:TSSOP-28_4.4x9.7mm_P0.65mm
U401	PCA9685PW	Package_SO:TSSOP-28_4.4x9.7mm_P0.65mm
U402	PCA9685PW	Package_SO:TSSOP-28_4.4x9.7mm_P0.65mm
U601	4051	Package_SO:SO-16_3.9x9.9mm_P1.27mm
U602	4051	Package_SO:SO-16_3.9x9.9mm_P1.27mm
U603	4051	Package_SO:SO-16_3.9x9.9mm_P1.27mm
U604	4051	Package_SO:SO-16_3.9x9.9mm_P1.27mm
U605	74HC165	Package_SO:SO-16_3.9x9.9mm_P1.27mm
U606	74HC165	Package_SO:SO-16_3.9x9.9mm_P1.27mm
U701	TL074	Package_SO:SOIC-14_3.9x8.7mm_P1.27mm
U801	LM4040DBZ-5	Package_TO_SOT_SMD:SOT-23
U802	AZ1117-3.3	Package_TO_SOT_SMD:SOT-223-3_TabPin2
U803	LM4040DBZ-10	Package_TO_SOT_SMD:SOT-23
U804	AZ1117-3.3	Package_TO_SOT_SMD:SOT-223-3_TabPin2
U805	EC4SAW-24S05N	ell_special:EC4SAW_DC_DC_SIP8
U901	MCP6004	Package_SO:SO-14_3.9x8.65mm_P1.27mm
U902	MCP6004	Package_SO:SO-14_3.9x8.65mm_P1.27mm

Provenance

Repository: TheSlowGrowth/TapeLooper ↗
Commit: unknown
Licence: CC-BY-4.0

How it is used

Trace's agent reads this design as context — what parts a board like this carries, how they are grouped across sheets, what a plausible layer stack and board size look like for the job. It is not copied. The licence above is permissive, and it, the repository and the commit are recorded so the origin of anything derived from it is always answerable.