Pico peltier

About the Pico peltier PCB

Pico peltier is an open source RP2040/RP2350 PCB design by syauqi-alias, published on GitHub under the MIT license. It is a 4-layer board measuring 56 × 88 mm, with 90 components from 46 distinct parts.

Its main chip is the RP2350_60QFN, from the RP2040/RP2350 family. Other key parts include the W25Q128JVSIM TR, 82400102, LT8722AV-PBF and TPSM863253RDXR. By type, the board carries 48 capacitors, 20 resistors, 5 ICs, 4 connectors, 3 switches and 3 diodes.

From the project

A TEC Controller using Pico RP2350 with Analog Devices LT8722 full bridge driver rated at 15V 4A

Main components on the Pico peltier

W25Q128JVSIM TR RP2350_60QFN 82400102LT8722AV-PBFTPSM863253RDXR

Pico peltier bill of materials (BOM)

90 components, 46 distinct parts — part numbers from the project's BOM.

Qty	Part	Footprint	Refs
1	W25Q128JVSIM TR W25Q128JVS	SOIC-8_5.3x5.3mm_P1.27mm	U1
1	RP2350_60QFN	RP2350-QFN-60-1EP_7x7_P0.4mm_EP3.4x3.4mm_ThermalVias	U2
1	82400102 WE-TVS-82400102	SOT-23-6	U3
1	LT8722AV-PBF	LQFN18_3X3X0.95_ADI-M	U4
1	TPSM863253RDXR	VREG_TPSM863253RDXR	U5
1	ABM8-272-T3	Crystal_SMD_3225-4Pin_3.2x2.5mm	Y1
1	KEYSTONE/575-4 USB_C_Receptacle_USB2.0_14P	USB_C_Receptacle_JAE_DX07S016JA1R1500	J1
1	KEYSTONE/575-4 Conn_02x07_Odd_Even	PinSocket_2x07_P2.54mm_Vertical	J2
1	F3311A7H121016E200 ZJY130-2864KSWLG22	AMPHENOL_F3311A7H121016E200	J3
1	KEYSTONE/575-4 Screw_Terminal_01x02	Altech_AK100_1x02_P5.00mm	J4
2	434133025816 SW_Push	SW_Push_1P1T_NO_Vertical_Wuerth_434133025816	SW1, SW2
1	RotaryEncoder_Switch	RotaryEncoder_Bourns_Vertical_PEC12R-3x17F-Sxxxx	SW3
1	Screw_Terminal_01x02	Altech_AK100_1x02_P5.00mm	TEC1
3	10K patch	Altech_AK100_1x02_P5.00mm	TH1, TH2, TH3
1	SS12	D_SMA	D1
1	WS2812B	LED_WS2812B_PLCC4_5.0x5.0mm_P3.2mm	D2
1	5.1 Vz	D_SOD-123	D4
1	COILCRAFT/XGL4020-102MEC 3.3u	L_pol_2016	L1
1	1uH	L_Coilcraft_XAL4020-XXX	L2
1	AVX/TAJD476M020RNJ 100n	C_0603_1608Metric_Pad1.08x0.95mm_HandSolder	C1

Show 26 more

Qty	Part	Footprint	Refs
3	4.7u	C_0603_1608Metric_Pad1.08x0.95mm_HandSolder	C2, C8, C9
1	15p	C_0603_1608Metric_Pad1.08x0.95mm_HandSolder	C3
1	MURATA/GCM188R71E105KA64D 15p	C_0603_1608Metric_Pad1.08x0.95mm_HandSolder	C4
1	MURATA/GCM188R71E105KA64D 4.7u	C_0603_1608Metric_Pad1.08x0.95mm_HandSolder	C5
17	100n	C_0603_1608Metric_Pad1.08x0.95mm_HandSolder	C6, C7, C10, C11, C12, C13, C14, C15 +9
1	47uF	CP_EIA-7343-31_Kemet-D_HandSolder	C19
3	4.7uF	C_1206_3216Metric_Pad1.33x1.80mm_HandSolder	C20, C22, C29
6	0.1uF	C_0603_1608Metric_Pad1.08x0.95mm_HandSolder	C21, C23, C24, C25, C32, C50
3	47nF	C_0603_1608Metric_Pad1.08x0.95mm_HandSolder	C26, C28, C31
2	1uF	C_0603_1608Metric_Pad1.08x0.95mm_HandSolder	C30, C46
1	10uF	C_0805_2012Metric_Pad1.18x1.45mm_HandSolder	C33
1	0.1uF	C_0805_2012Metric_Pad1.18x1.45mm_HandSolder	C34
1	0.01uF	C_0805_2012Metric_Pad1.18x1.45mm_HandSolder	C35
2	22uF	C_0603_1608Metric_Pad1.08x0.95mm_HandSolder	C36, C37
2	1uF 16V	C_0603_1608Metric_Pad1.08x0.95mm_HandSolder	C42, C44
2	10uF	C_0805_2012Metric	C43, C45
3	CR0603-FX-5101ELF 5.1k	R_0603_1608Metric_Pad0.98x0.95mm_HandSolder	R1, R2, R16
1	1k	R_0603_1608Metric_Pad0.98x0.95mm_HandSolder	R3
1	OHMITE/RW5S0FA100RJE 33	R_0603_1608Metric_Pad0.98x0.95mm_HandSolder	R4
2	NIC/NRC06J104TRF 1k	R_0603_1608Metric_Pad0.98x0.95mm_HandSolder	R5, R6
2	27	R_0603_1608Metric_Pad0.98x0.95mm_HandSolder	R7, R8
1	20k	R_0603_1608Metric_Pad0.98x0.95mm_HandSolder	R9
1	100k	R_0603_1608Metric_Pad0.98x0.95mm_HandSolder	R10
1	14.7k	R_0603_1608Metric_Pad0.98x0.95mm_HandSolder	R11
7	10k	R_0603_1608Metric_Pad0.98x0.95mm_HandSolder	R12, R13, R14, R15, R18, R19, R20
1	CRCW0603680KFKEAHP 680k	R_0603_1608Metric_Pad0.98x0.95mm_HandSolder	R17

Pico peltier design files

The KiCad project lives in the syauqi-alias/pico-peltier repository on GitHub; these links point at the commit this page was built from.

Layoutpico_peltier.kicad_pcb
Schematicpico_peltier.kicad_sch
BOManalog device demo dc3145a/715-DC3145A_REV3_WEB_BOM.XLSX

Pico peltier: common questions

What microcontroller does the Pico peltier use?

The Pico peltier is built around the RP2350_60QFN, from the RP2040/RP2350 family.

How big is the Pico peltier PCB?

The Pico peltier measures 56 × 88 mm, has 4 copper layers and is 1.579 mm thick.

How many components are on the Pico peltier?

90 components, from 46 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 Pico peltier design files?

From the syauqi-alias/pico-peltier 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 Pico peltier design in my own project?

Yes, under the terms of its MIT license, which syauqi-alias chose for the repository.

Can I test firmware for the Pico peltier 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.