SaxboardTM

tenorangesax·SaxboardTM·PCB/Saxboard.kicad_pcb

About the SaxboardTM PCB

SaxboardTM is an open source RP2040/RP2350 PCB design by tenorangesax, published on GitHub. It is a 2-layer board measuring 21 × 51 mm, with 34 components from 17 distinct parts.

Its main chip is the RP2040, from the RP2040/RP2350 family. Other key parts include the MCP1700x-330xxTT and W25Q16JVUXIQ. By type, the board carries 17 capacitors, 7 resistors, 4 connectors, 3 ICs, 1 crystal and 1 switch.

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

From the project

A custom personalized devboard for me, more on the teaching side for me to understand how the seeeds work and how to basic solder.

The buttons arrived, and I got to work soldering!

I had to watch some tutorials on how to SMD solder, and it was hard, but I used my phone to zoom in on the board and got good focus on it to solder.

After soldering the mini LED and turtle button, I plugged it in, and it worked! I verifed the button was working because I put it into boot mode.

I ran some test code on it, and it is functional!!!

SaxboardTM, from the project README — From the project README

Main components on the SaxboardTM

RP2040 MCP1700x-330xxTT W25Q16JVUXIQ

SaxboardTM bill of materials (BOM)

34 components, 17 distinct parts — part numbers from the project's BOM.

Qty	Part	Footprint	Refs
1	RP2040	QFN-56-1EP_7x7mm_P0.4mm_EP3.2x3.2mm	U1
1	MCP1700x-330xxTT	SOT-23	U2
1	W25Q16JVUXIQ	Winbond_USON-8-1EP_3x2mm_P0.5mm_EP0.2x1.6mm	U3
1	12 MHz	Crystal_SMD_3225-4Pin_3.2x2.5mm	Y1
1	USB_C_Receptacle_USB2.0_14P	USB_C_Receptacle_HRO_TYPE-C-31-M-12	J1
2	Conn_01x20	PinHeader_1x20_P2.54mm_Vertical	J2, J3
1	Conn_01x03	PinHeader_1x03_P2.54mm_Vertical	J4
1	SW_Push	SW_Push_SPST_NO_Alps_SKRK	SW1
1	SK6812MINI	LED_SK6812MINI_PLCC4_3.5x3.5mm_P1.75mm	D2
2	1uF	C_0402_1005Metric	C1, C10
11	0.1uF	C_0402_1005Metric	C2, C3, C4, C5, C6, C7, C8, C9 +3
2	10uF	C_0402_1005Metric	C13, C14
2	15pF	C_0402_1005Metric	C15, C16
2	5.1k	R_0402_1005Metric	R1, R2
2	1k	R_0402_1005Metric	R3, R5
1	10k	R_0402_1005Metric	R4
2	27	R_0402_1005Metric	R6, R7

SaxboardTM design files

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

LayoutPCB/Saxboard.kicad_pcb
SchematicPCB/Saxboard.kicad_sch
BOMBOM/Saxboard - Saxboard.csv-JLCPCB Assembly Order (2).xls

SaxboardTM: common questions

What microcontroller does the SaxboardTM use?

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

How big is the SaxboardTM PCB?

The SaxboardTM measures 21 × 51 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the SaxboardTM?

34 components, from 17 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 SaxboardTM design files?

From the tenorangesax/SaxboardTM 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 SaxboardTM design in my own project?

The repository has no license, so all rights stay with tenorangesax. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the SaxboardTM 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.