OpenScent

anxndsgn·OpenScent·kicad file/OpenScent/OpenScent.kicad_pcb

About the OpenScent PCB

OpenScent is an open source RP2040/RP2350 PCB design by anxndsgn, published on GitHub under the CC-BY-NC-4.0 license. It is a 4-layer board measuring 54 × 30 mm, with 57 components from 20 distinct parts.

Its main chip is the ESP32-PICO-D4, from the RP2040/RP2350 family. Other key parts include the CH343P, AMS1117 and MCP73831T-2ATI/OT. By type, the board carries 22 capacitors, 10 resistors, 6 transistors, 6 connectors, 4 ICs and 4 inductors.

It belongs with the dev boards & breakouts designs in this gallery.

From the project

an olfactory interface development board

Main components on the OpenScent

ESP32-PICO-D4 CH343P AMS1117 MCP73831T-2ATI/OT

OpenScent bill of materials (BOM)

57 components, 20 distinct parts — part numbers from the project's BOM.

Qty	Part	Footprint	Refs
1	ESP32-PICO-D4	QFN-48-1EP_7x7mm_P0.5mm_EP5.3x5.3mm	U1
1	CH343P	QFN-16-1EP_3x3mm_P0.5mm_EP1.9x1.9mm	U2
1	AMS1117	SOT-89-3	U3
1	MCP73831T-2ATI/OT	SOT-23-5	U4
4	AO3400A	SOT-23	Q1, Q2, Q3, Q4
1	BC847BS	SOT-363_SC-70-6	Q5
1	DMG3415U	SOT-23	Q6
1	USB_C_RECEPTACLE_USB2.0 USB_C_Receptacle_USB2.0	USB_C_Receptacle_G-Switch_GT-USB-7010ASV	J1
5	CONN_01X02_PIN Conn_01x02_Pin	JST_PH_B2B-PH-K_1x02_P2.00mm_Vertical	J2, J3, J4, J5, J6
1	YC0010AA	XCVR_YC0010AA	E1
1	~	SW_TL3365AF180QG	KEY1
1	1N5819WS	D_SOD-323	D1
2	LED	LED_0603_1608Metric	D2, D3
4	25UH/800UH	3 pin inductor	L1, L2, L3, L4
2	10UF 10uF	C_0603_1608Metric_Pad1.08x0.95mm_HandSolder	C1, C2
18	0.1UF 0.1uF	C_0603_1608Metric_Pad1.08x0.95mm_HandSolder	C3, C6, C7, C8, C9, C10, C11, C12 +10
2	4.7UF 4.7uF	C_0603_1608Metric_Pad1.08x0.95mm_HandSolder	C4, C5
1	4.7K	R_0603_1608Metric	R1
2	1K	R_0603_1608Metric	R2, R9
7	10K	R_0603_1608Metric	R3, R4, R5, R6, R7, R8, R10

OpenScent design files

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

OpenScent: common questions

What microcontroller does the OpenScent use?

The OpenScent is built around the ESP32-PICO-D4, from the RP2040/RP2350 family.

How big is the OpenScent PCB?

The OpenScent measures 54 × 30 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the OpenScent?

57 components, from 20 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 OpenScent design files?

From the anxndsgn/OpenScent 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 OpenScent design in my own project?

It is published under CC-BY-NC-4.0, which limits how it may be reused; read the license before building on it.

Can I test firmware for the OpenScent 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.