Picolino-CPC

salvogendut·picolino-CPC·hardware/kicad/picolino-cpc.kicad_pcb

About the Picolino-CPC PCB

Picolino-CPC is an open source RP2040/RP2350 PCB design by salvogendut, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 150 × 120 mm, with 81 components from 37 distinct parts.

Its main chip is the Raspberry Pi Pico 2, from the RP2040/RP2350 family. Other key parts include the GAL20V8B / picolino.jed, 74HCT21, SN74CB3T3245DW, W5100S reference module and PIC16F84A / Cyboard HEX. By type, the board carries 31 resistors, 17 capacitors, 13 ICs, 8 diodes, 4 connectors and 2 jumpers.

From the project

A PICO-based expansion board for the CPC

The editable KiCad 10 project contains a cover sheet and four circuit sheets: bus/power, Pico ROM interface, Ethernet/mouse and RTC. The PCB is 150 × 120 mm, two copper layers, 1.6 mm nominal thickness, with four 3.2 mm non-plated mounting holes on a 142 × 112 mm rectangle. Nominal signal tracks are 0.25 mm; power distribution is 0.80 mm, with pad escapes where needed. The project minimum is 0.20 mm track/clearance and 0.30 mm drilled vias; routed vias use 0.70/0.35 mm diameter/drill. Ground pours occupy both layers.

Picolino-CPC, from the project README — From the project README

Main components on the Picolino-CPC

Raspberry Pi Pico 2GAL20V8B / picolino.jed74HCT21 SN74CB3T3245DWW5100S reference modulePIC16F84A / Cyboard HEX74HCT244RP5C01 (original, DIP-18)74HCT373MAX690AESA+

Picolino-CPC bill of materials (BOM)

81 components, 37 distinct parts — part numbers from the project's BOM.

Qty	Part	Footprint	Refs
1	Raspberry Pi Pico 2	Pico2_Socketed	U1
1	GAL20V8B / picolino.jed	DIP-24_W7.62mm_Socket_LongPads	U2
1	74HCT21	DIP-14_W7.62mm_Socket_LongPads	U3
4	SN74CB3T3245DW	SOIC-20W_7.5x12.8mm_P1.27mm	U4, U5, U6, U7
1	W5100S reference module	W5100S_Cyboard	U8
1	PIC16F84A / Cyboard HEX	DIP-18_W7.62mm_Socket_LongPads	U9
1	74HCT244	DIP-20_W7.62mm_Socket_LongPads	U10
1	RP5C01 (original, DIP-18)	DIP-18_W7.62mm_Socket_LongPads	U11
1	74HCT373	DIP-20_W7.62mm_Socket_LongPads	U12
1	MAX690AESA+	SOIC-8_3.9x4.9mm_P1.27mm	U13
1	2N7002	SOT-23	Q1
1	32.768kHz / AB38T	Crystal_C38-LF_D3.0mm_L8.0mm_Vertical	Y1
1	CPC 50-pin expansion	IDC-Header_2x25_P2.54mm_Vertical	J1
1	CH376 parallel / short ribbon	IDC-Header_2x08_P2.54mm_Vertical	J2
1	EXT regulated 5V	PinHeader_1x02_P2.54mm_Vertical	J3
1	PS/2 MOUSE only	USB_A_TE_292303-7_Horizontal	J4
1	CR2032 / Keystone 103	BatteryHolder_Keystone_103_1x20mm	BT1
1	30pF trim / KKT330TR	C_Trimmer_Murata_TZC3	CV1
1	USB 500mA hold	Fuse_1206_3216Metric	F1
1	POWER: 1 CPC / 2 BOARD / 3 EXT	PinHeader_1x03_P2.54mm_Vertical	JP1

Show 17 more

Qty	Part	Footprint	Refs
1	ROM ENABLE: fit BOTH shunts	PinHeader_2x02_P2.54mm_Vertical	JP2
1	RTC ALARM / calibration	TestPoint_THTPad_D2.0mm_Drill1.0mm	TP1
1	1N5817	D_DO-41_SOD81_P10.16mm_Horizontal	D1
1	USB activity	LED_D3.0mm	D2
4	BAT43	D_DO-35_SOD27_P7.62mm_Horizontal	D3, D4, D5, D6
2	1N4148	D_DO-35_SOD27_P7.62mm_Horizontal	D7, D8
13	100NF 100nF	C_0805_2012Metric	C1, C2, C3, C6, C7, C8, C9, C10 +5
1	100uF / 10V	CP_Radial_D6.3mm_P2.50mm	C4
1	47uF / 10V	CP_Radial_D5.0mm_P2.00mm	C5
1	30pF C0G	C_0805_2012Metric	C13
1	56pF C0G	C_0805_2012Metric	C14
1	1k	R_0805_2012Metric	R1
7	10K 10k	R_0805_2012Metric	R2, R3, R4, R6, R15, R16, R19
1	2.2K 2.2k	R_0805_2012Metric	R5
8	470	R_0805_2012Metric	R7, R8, R9, R10, R11, R12, R13, R14
3	100K 100k	R_0805_2012Metric	R17, R18, R31
11	220K 220k	R_0805_2012Metric	R20, R21, R22, R23, R24, R25, R26, R27 +3

Picolino-CPC design files

The KiCad project lives in the salvogendut/picolino-CPC repository on GitHub; these links point at the commit this page was built from.

Layouthardware/kicad/picolino-cpc.kicad_pcb
Schematichardware/kicad/picolino-cpc.kicad_sch
BOMhardware/kicad/bom.csv

Picolino-CPC: common questions

What microcontroller does the Picolino-CPC use?

The Picolino-CPC is built around the Raspberry Pi Pico 2, from the RP2040/RP2350 family.

How big is the Picolino-CPC PCB?

The Picolino-CPC measures 150 × 120 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Picolino-CPC?

81 components, from 37 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 Picolino-CPC design files?

From the salvogendut/picolino-CPC 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 Picolino-CPC design in my own project?

Yes, under the terms of its GPL-3.0 license, which salvogendut chose for the repository.

Can I test firmware for the Picolino-CPC 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.