Multiprobe

picolemon·multiprobe·hw/multiprobe-pcb/multiprobe-pcb.kicad_pcb

About the Multiprobe PCB

Multiprobe is an open source RP2040/RP2350 PCB design by picolemon, published on GitHub under the MIT license. It is a 4-layer board measuring 50 × 50 mm, with 89 components from 39 distinct parts.

Its main chip is the RP2350A_C42411118, from the RP2040/RP2350 family. Other key parts include the RCLAMP0521P.TCT_C3029033, ME6217C33M5G, W25Q32JVUUIQ and ABM8-272-T3_C20625731. By type, the board carries 36 resistors, 22 capacitors, 11 connectors, 9 LEDs, 6 ICs and 2 switches.

From the project

A debug probe for the RP2050 & RP2035 devices that can debug up to 4 devices at the same time with two active UARTs.

Debug project 1 with UART on COM port ACM0:

Debug project 2 with UART on COM port ACM1:

The UARTs must be assigned to a com port using the table below:

Hint: The vendor code is formatted so the first digit (8 for ACM0 or 9 for ACM1) corresponds to the COM port and the last digit (1,2,3 & 4) is the UART number printed on the board silkscreen.

For example if you plug a device into UART4 and want to communicated on ACM1 you would enter "cmsis-dap cmd 0x94". Some limitation apply due to the pico hardware UART can only be assigned to certain pins, for example UART1 and UART3 can't be used at…

Multiprobe, from the project README — From the project README

Main components on the Multiprobe

RCLAMP0521P.TCT_C3029033ME6217C33M5G W25Q32JVUUIQ ABM8-272-T3_C20625731 RP2350A_C42411118

Multiprobe bill of materials (BOM)

89 components, 39 distinct parts — part numbers from the project's BOM.

Qty	Part	Footprint	Refs
2	RCLAMP0521P.TCT_C3029033 RCLAMP0521P.TCT-MS	D0402-BI	U1, U2
1	ME6217C33M5G ME6217C33M5G	SOT-23-5_L3.0-W1.7-P0.95-LS2.8-BR	U3
1	W25Q32JVUUIQ W25Q32JVUUIQ	USON-8_L4.0-W3.0-P0.80-BL_WINBOND_UU	U4
1	ABM8-272-T3_C20625731	CRYSTAL-SMD_4P-L3.2-W2.5-BL	U5
1	RP2350A_C42411118 RP2350A	QFN-60_L7.0-W7.0-P0.40-TL-EP3.4	U6
1	DBG_1 2.54-1*3P正弯针	HDR-TH_3P-P2.54-H-M-BW7.2-P	J1
1	UART_1 2.54-1*3P正弯针	HDR-TH_3P-P2.54-H-M-BW7.2-P	J2
1	DBG_2 2.54-1*3P正弯针	HDR-TH_3P-P2.54-H-M-BW7.2-P	J3
1	UART_2 2.54-1*3P正弯针	HDR-TH_3P-P2.54-H-M-BW7.2-P	J4
1	DBG_3 2.54-1*3P正弯针	HDR-TH_3P-P2.54-H-M-BW7.2-P	J5
1	UART_3 2.54-1*3P正弯针	HDR-TH_3P-P2.54-H-M-BW7.2-P	J6
1	DBG_4 2.54-1*3P正弯针	HDR-TH_3P-P2.54-H-M-BW7.2-P	J7
1	UART_4 2.54-1*3P正弯针	HDR-TH_3P-P2.54-H-M-BW7.2-P	J8
1	DEBUG_UART	PinHeader_1x03_P2.54mm_Vertical	J10
1	C92159 PWR_OUT 2.54-1*3P正弯针	HDR-TH_3P-P2.54-H-M-BW7.2-P	J11
1	DEBUG_SWD	PinHeader_1x03_P2.54mm_Vertical	J12
2	C92589 ~ K2-1808SN-A4SW	KEY-SMD_4P-L4.2-W3.2-P2.20-LS5.1-TL	SW1, SW2
1	TYPE-C-31-M-12 type-c-31-m-12 type-c-31-m-12	USB-C-SMD_TYPE-C-6PIN-2MD-073	USB1
8	C130723 ~ NCD0402G1	LED0402-RD	LED1, LED2, LED3, LED4, LED5, LED6, LED7, LED8
1	C130719 ~ NCD0402R1	LED0402-RD	LED9

Show 19 more

Qty	Part	Footprint	Refs
1	C110493 D DFLS130L-7	POWERDI-123_L2.8-W1.8-LS3.7-RD	D1
1	AOTA-B201610S3R3-101-T	IND-SMD_L2.0-W1.6_AOTA-B201610S3R3-101-T	L1
2	C10UF C10uF GRM155R61A106ME44D	C0402	C1, C3
4	C100NF C100nF GRM155R71H104KE14D	C0402	C2, C4, C5, C8
2	C15PF C15pF	C0402	C6, C7
3	C4.7UF C4.7uF CL05A475KP5NRNC	C_0402_1005Metric	C9, C10, C21
10	100NF 100nf	C0402	C11, C12, C13, C14, C15, C16, C17, C18 +2
1	C4.7UF C4.7uF CL05A475KP5NRNC	C0402	C20
1	R10K RC0402FR-0710KL	R0402	R1
2	R5.1K 0402WGJ0512TCE	R0402	R2, R6
1	R5.6K 0402WGF5601TCE	R0402	R3
2	R27 0402WGF270JTCE	R0402	R4, R5
1	R100K RC0402FR-07100KL	R0402	R7
1	R1K 0402WGJ0102TCE	R0402	R8
1	R10K RC0402FR-0710KL	R0402	R9
1	1K	R0402	R10
1	R33 RT0402BRD0733RL	R0402	R11
9	R2K 0402WGF2001TCE	R0402	R12, R14, R15, R16, R17, R18, R19, R20 +1
16	R100 0402WGF1000TCE	R0402	R22, R23, R24, R25, R26, R27, R28, R29 +8

Multiprobe design files

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

Multiprobe: common questions

What microcontroller does the Multiprobe use?

The Multiprobe is built around the RP2350A_C42411118, from the RP2040/RP2350 family.

How big is the Multiprobe PCB?

The Multiprobe measures 50 × 50 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the Multiprobe?

89 components, from 39 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 Multiprobe design files?

From the picolemon/multiprobe 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 Multiprobe design in my own project?

Yes, under the terms of its MIT license, which picolemon chose for the repository.

Can I test firmware for the Multiprobe 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.