SAO Demo Controller

ageppert·SAO_Demo_Controller·Electronic Design/SAO Demo Controller V4 Design Files KiCAD 10/SAO_Demo_Controller.kicad_pcb

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About the SAO Demo Controller PCB

SAO Demo Controller is an open source RP2040/RP2350 PCB design by ageppert, published on GitHub under the MIT license. It is a 2-layer board measuring 38.1 × 50.8 mm, with 50 components from 27 distinct parts.

Its main chip is the RP2040-Zero, from the RP2040/RP2350 family. Other key parts include the RY2201, TP4054, LM66100DCK, TPS61200DRC and INA180A2. By type, the board carries 20 resistors, 10 ICs, 7 capacitors, 4 crystals, 2 connectors and 1 switch.

From the project

A small inline SAO with an RP2040 used to demo SAOs that require smarts, but don't have it built-in.

A Microcontroller for your smarter-than-average SAO!

The SAO Demo Controller makes it convenient to bring life to your advanced I2C-based SAO! Use this to test and demonstrate your new design even when your host badge isn't ready to control the SAO. Maybe this is better referred to as a micro badge for developing SAOs.

CAUTION: Do not plug this into your host badge and USB-C at the same time!!!

SAO Demo Controller, from the project README — From the project README

Main components on the SAO Demo Controller

RY2201 TP4054 LM66100DCK TPS61200DRC INA180A2 RP2040-Zero

SAO Demo Controller bill of materials (BOM)

50 components, 27 distinct parts — part numbers from the project's BOM.

Qty	Part	Footprint	Refs
1	RY2201	SOT-23-5_HandSoldering	U1
1	TP4054	SOT-23-5	U2
5	LM66100DCK	SOT-363_SC-70-6	U3, U4, U5, U6, U8
1	TPS61200DRC	Texas_S-PVSON-N10_ThermalVias	U7
1	INA180A2	SOT-23-5	U9
1	RP2040-Zero	RP2040 Zero	U10
1	SFH11-NBPC-D03-ST-BK SAO_conn	Badgelife-SAOv169-BADGE-2x3-no-front-text	X1
2	SFH11-NBPC-D03-ST-BK SAO_conn	Badgelife-SAOv169-BADGE-2x3-no-front-text-yes-front-outline	X2, X3
1	SM04B-SRSS-TB QWIIC JST	JST_SH_SM04B-SRSS-TB_1x04-1MP_P1.00mm_Horizontal	X4
1	BAT-P	PinSocket_1x02_P2.54mm_Vertical	J1
1	BAT-L	JST_PH_S2B-PH-SM4-TB_1x02-1MP_P2.00mm_Horizontal	J2
4	EVQP7J01P	SMD4_SW_EVQP7J_PAN	B1, B2, B3, B4
1	SK12D07L4B	Switch_SK12D07VG4	SW3
1	LED	LED_0603_1608Metric	D1
1	2.2uH	L_Sunlord_SWPA4020S	L1
3	100nF	C_0603_1608Metric	C1, C5, C6
2	10uF	C_0603_1608Metric	C2, C7
2	47uF	C_0805_2012Metric	C3, C4
7	1K	R_0603_1608Metric	R1, R4, R5, R6, R7, R15, R18
1	1K2	R_0603_1608Metric	R2

Show 7 more

Qty	Part	Footprint	Refs
3	4K7	R_0603_1608Metric	R3, R19, R20
2	0603WAF2201T5E 2K2 UNI-ROYAL	R_0603_1608Metric	R8, R9
2	0	R_0603_1608Metric	R10, R11
1	1.2M	R_0603_1608Metric	R12
1	210K	R_0603_1608Metric	R13
2	8K2	R_0603_1608Metric	R14, R16
1	0.05-1%	R_0805_2012Metric	R17

SAO Demo Controller design files

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

SAO Demo Controller: common questions

What microcontroller does the SAO Demo Controller use?

The SAO Demo Controller is built around the RP2040-Zero, from the RP2040/RP2350 family.

How big is the SAO Demo Controller PCB?

The SAO Demo Controller measures 38.1 × 50.8 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the SAO Demo Controller?

50 components, from 27 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 SAO Demo Controller design files?

From the ageppert/SAO_Demo_Controller 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 SAO Demo Controller design in my own project?

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

Can I test firmware for the SAO Demo Controller 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.