Econopet

DLehenbauer·econopet·hw/rev-a/mainboard/kicad/Mainboard.kicad_pcb

About the Econopet PCB

Econopet is an open source RP2040/RP2350 PCB design by DLehenbauer, published on GitHub under the CC0-1.0 license. It is a 2-layer board measuring 262.5 × 108 mm, with 284 components from 113 distinct parts.

Its main chip is the RP2040, from the RP2040/RP2350 family. Other key parts include the W65C02S, AS6C1008, TLV1117LV33, LM317AG-TN3-R and TPS5430DDA. By type, the board carries 105 capacitors, 90 resistors, 27 connectors, 21 ICs, 14 diodes and 9 jumpers.

It belongs with the retro computing designs in this gallery.

From the project

Mainboard replacement for Commodore PET/CBM series machines

Open hardware mainboard replacement for Commodore PET/CBM 2001/30xx/40xx/80xx machines. The EconoPET can also run standalone with HDMI display and USB keyboard.

See the project page for user manual and firmware updates.

Rev. A has been released. For manufacturing and assembly instructions, go here.

This project uses a Dev Container for a consistent development environment on Windows, macOS, and Linux.

Econopet, from the project README — From the project README

Main components on the Econopet

W65C02S AS6C1008 TLV1117LV33 LM317AG-TN3-R TPS5430DDA SN74LVC4245APWR T20Q144C3 W65C21N W65C22N SN74LS07 74LS245 74LS145 RP2040 W25Q128JVS

Econopet bill of materials (BOM)

284 components, 113 distinct parts — part numbers from the project's BOM.

Qty	Part	Footprint	Refs
1	W65C02S	DIP-40_W15.24mm_Socket	U1
1	AS6C1008	DIP-32_W15.24mm_Socket	U2
1	TLV1117LV33	SOT-223-3_TabPin2	U3
2	LM317AG-TN3-R	TO-252-2	U4, U5
1	TPS5430DDA	TI_SO-PowerPAD-8_ThermalVias	U6
3	SN74LVC4245APWR	TSSOP-24_4.4x7.8mm_P0.65mm	U7, U8, U9
1	T20Q144C3	LQFP-144_20x20mm_P0.5mm	U10
2	W65C21N	DIP-40_W15.24mm_Socket	U11, U12
1	W65C22N	DIP-40_W15.24mm_Socket	U13
3	SN74LS07	SOIC-14_3.9x8.7mm_P1.27mm	U14, U15, U16
2	74LS245	SOIC-20W_7.5x12.8mm_P1.27mm	U17, U18
1	74LS145	SOIC-16_3.9x9.9mm_P1.27mm	U19
1	RP2040	LQFN-56_L7.0-W7.0-P0.4-EP	U21
1	W25Q128JVS	SOIC-8_5.23x5.23mm_P1.27mm	U22
1	MMBT3904	SOT-23	Q1
2	AO3401A	SOT-23_L2.9-W1.3-P1.90-LS2.4-BR	Q2, Q3
3	SS8050	SOT-23	Q4, Q5, Q6
1	SS8550	SOT-23	Q7
1	C9002 12 MHz	Crystal_SMD_3225-4Pin_3.2x2.5mm	Y1
1	IEEE_EDGE	CBM_PET_IEEE_EDGE_CON_24P	J1

Show 93 more

Qty	Part	Footprint	Refs
1	USER_EDGE	CBM_PET_USER_EDGE_CON_24P	J2
1	CASS_A_EDGE	CBM_PET_CASS_EDGE_CON_12P	J3
1	BUS_EXPANSION	PinHeader_2x25_P2.54mm_Vertical	J4
1	KEYBOARD	CBM_PET_KEYBOARD_KEYED_20P	J5
1	CASS_B_EDGE	CBM_PET_CASS_EDGE_CON_12P	J6
1	VIDEO	PET_Video	J7
1	PET POWER	PET_POWER_Molex_KK-396_A-41791-0009_1x09_P3.96mm_Vertical	J8
1	FPGA_MCU	PinHeader_2x10_P2.54mm_Vertical	J9
1	5V PWR	PinHeader_2x03_P2.54mm_Vertical	J10
1	9V POWER	PinHeader_1x02_P2.54mm_Vertical	J11
1	VIDEO_OR_5V	PinHeader_1x03_P2.54mm_Vertical_or_SolderJumper	J12
1	9V POWER JACK	BarrelJack_Horizontal	J13
1	USER_HEADER	PinHeader_2x11_P2.54mm_Vertical	J14
1	CASS_A_HEADER	PinHeader_1x06_P2.54mm_Vertical	J15
1	CASS_B_HEADER	PinHeader_1x06_P2.54mm_Vertical	J16
1	PMOD1	PMOD_Socket_2x06_P2.54mm_Horizontal	J17
1	PMOD2	PMOD_Socket_2x06_P2.54mm_Horizontal	J18
1	KEYBOARD_EX	PinHeader_2x08_P2.54mm_Vertical	J19
1	IEEE_HEADER	PinHeader_2x09_P2.54mm_Vertical	J20
1	AUDIO	CUI_SJ-43504-SMT-TR	J21
1	PROG	IDC-Header_2x08_P2.54mm_Vertical	J22
1	MENU_HDR	PinHeader_1x02_P2.54mm_Vertical	J23
1	C138388 NOT_HDMI_A	HDMI_A_Molex_208658-1001_Horizontal	J24
1	C393941 MICRO_SD	TF-SMD_TF-PUSH	J25
1	USB1.1_HOST_TYPE_C	USB-C_SMD-TYPE-C-31-M-12	J26
1	6V POWER	PinHeader_1x02_P2.54mm_Vertical	J27
1	Heatsink_Pad	V1100SMDBL_or_573100D00000G	HS1
1	CASS A ~{SWITCH}	SolderJumper-3_P1.3mm_Open_RoundedPad1.0x1.5mm	JP1
1	CASS B ~{SWITCH}	SolderJumper-3_P1.3mm_Open_RoundedPad1.0x1.5mm	JP2
1	CASS A READ	SolderJumper-3_P1.3mm_Open_RoundedPad1.0x1.5mm	JP3
1	CASS B READ	SolderJumper-3_P1.3mm_Open_RoundedPad1.0x1.5mm	JP4
1	CASS A ~{MOTOR}	SolderJumper-3_P1.3mm_Open_RoundedPad1.0x1.5mm	JP5
1	CASS B ~{MOTOR}	SolderJumper-3_P1.3mm_Open_RoundedPad1.0x1.5mm	JP6
1	DVI_CEC	SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm	JP7
1	DVI_SDA	SolderJumper-3_P1.3mm_Open_RoundedPad1.0x1.5mm	JP8
1	DVI_SCL	SolderJumper-3_P1.3mm_Open_RoundedPad1.0x1.5mm	JP9
1	42Ω SPK	AT1220TT9R	LS1
1	RESET	SW_PUSH_1P1T_6x3.5mm_H4.3_APEM_MJTP1243	SW1
1	NMI	SW_PUSH_1P1T_6x3.5mm_H4.3_APEM_MJTP1243	SW2
1	CONFIG	SW_DIP_SPSTx02_Slide_6.7x6.64mm_W7.62mm_P2.54mm_LowProfile_or_SolderJumper	SW3
1	RUN	SW_PUSH_1P1T_6x3.5mm_H4.3_APEM_MJTP1243	SW4
1	MENU_BTN	APEM_MJTP1117	SW5
1	BOOTSEL	SW_PUSH_1P1T_6x3.5mm_H4.3_APEM_MJTP1243	SW6
5	SS54	D_SMA	D1, D2, D3, D5, D12
1	SM4007	D_SOD-123F	D4
4	C2286 LED_RED	LED_0603_1608Metric	D6, D8, D9, D10
2	C2986059 LED_GRN	LED_0603_1608Metric	D7, D11
2	1N4148WS	D_SOD-323	D13, D14
1	C1002 600 200ma	L_0603_1608Metric	FB1
1	22UH 22uH	IND-SMD_L12.5-W12.5	L1
48	100N 100n	C_0402_1005Metric	C1, C2, C3, C13, C14, C25, C27, C33 +40
1	DNP	C_0402_1005Metric	C6
1	11000u	CP_Radial_D16.0mm_P7.50mm	C7
7	C96123 47u 10V	C_1206_3216Metric	C8, C16, C28, C30, C84, C101, C102
4	22N 22n	C_0402_1005Metric	C9, C10, C81, C85
4	22U 22u	C_0805_2012Metric	C11, C12, C15, C17
2	10U 10u	C_0603_1608Metric	C18, C26
8	1u	C_0402_1005Metric	C19, C20, C39, C41, C42, C43, C80, C103
1	150P 150p	C_0402_1005Metric	C21
6	10N 10n	C_0402_1005Metric	C22, C54, C56, C58, C60, C61
13	C23733 4u7 10V	C_0402_1005Metric	C23, C31, C32, C62, C63, C64, C65, C66 +5
1	C16772 220n 16V	C_0402_1005Metric	C24
1	1n	C_0402_1005Metric	C29
1	68N 68n	C_0603_1608Metric	C82
2	33P 33p	C_0402_1005Metric	C86, C87
3	C12530 2u2 6.3V	C_0402_1005Metric	C88, C91, C92
1	120UF 330uF	CP_Radial_D24.0mm_P5.00mm_P7.50mm_P10.00mm_SnapIn	C89
1	47N 47n	C_0603_1608Metric	C105
6	4K7 4k7	R_0402_1005Metric	R1, R2, R3, R4, R15, R40
1	68	R_0805_2012Metric	R5
2	0	R_0603_1608Metric	R6, R8
6	1K5 1k5	R_0402_1005Metric	R7, R17, R34, R35, R67, R69
1	5K1 5k1	R_0402_1005Metric	R9
1	330	R_0603_1608Metric	R10
1	300	R_0402_1005Metric	R11
1	120	R_0402_1005Metric	R12
1	220	R_0402_1005Metric	R13
12	10K 10k	R_0402_1005Metric	R14, R16, R18, R19, R20, R25, R32, R33 +4
3	5K6 5k6	R_0402_1005Metric	R21, R22, R23
3	100K 100k	R_0402_1005Metric	R24, R28, R71
2	12K 12k	R_0402_1005Metric	R26, R36
7	1k	R_0402_1005Metric	R27, R29, R41, R42, R43, R65, R74
3	470	R_0402_1005Metric	R30, R31, R38
1	22K 22k	R_0402_1005Metric	R37
7	2K2 2k2	R_0402_1005Metric	R44, R45, R48, R49, R50, R51, R52
2	27	R_0603_1608Metric	R46, R47
9	270	R_0603_1608Metric	R53, R54, R55, R56, R57, R58, R59, R60 +1
2	56K 56k	R_0402_1005Metric	R63, R64
1	680	R_0402_1005Metric	R68
2	1	R_0603_1608Metric	R72, R73
9	10KX4 10kx4	R_Array_Convex_4x0603	RN1, RN4, RN5, RN8, RN9, RN10, RN14, RN15 +1
4	4K7X4 4k7x4	R_Array_Convex_4x0603	RN2, RN3, RN6, RN7
3	470X4 470x4	R_Array_Convex_4x0603	RN11, RN12, RN13

Econopet design files

The KiCad project lives in the DLehenbauer/econopet repository on GitHub; these links point at the commit this page was built from.

Econopet: common questions

What microcontroller does the Econopet use?

The Econopet is built around the RP2040, from the RP2040/RP2350 family.

How big is the Econopet PCB?

The Econopet measures 262.5 × 108 mm, has 2 copper layers and is 0.57 mm thick.

How many components are on the Econopet?

284 components, from 113 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the Econopet design files?

From the DLehenbauer/econopet repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the Econopet design in my own project?

Yes, under the terms of its CC0-1.0 license, which DLehenbauer chose for the repository.

Can I test firmware for the Econopet without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug RP2040/RP2350 firmware against it before you order a PCB.