HardLabs

USB LED Ring

atuleu·aristeus·devices/USB_LED_Ring/USB_LED_Ring.kicad_pcb

USB LED Ring PCB layout, top view — open source RP2040/RP2350 board by atuleu

About the USB LED Ring PCB

USB LED Ring is an open source RP2040/RP2350 PCB design by atuleu, published on GitHub under the CERN-OHL-S-2.0 license. It is a 2-layer board measuring 94.5 × 75 mm, with 76 components from 28 distinct parts.

Its main chip is the RP2354A, from the RP2040/RP2350 family. Other key parts include the TPS923610DRLR, TLV75733PDBV and TPS2594720RPW. By type, the board carries 24 diodes, 21 capacitors, 11 resistors, 6 test points, 4 ICs and 4 connectors.

From the project

Yet another Open Source Hardware Apiary project for monitoring bees.

Main components on the USB LED Ring

TPS923610DRLRTLV75733PDBVRP2354ATPS2594720RPW

USB LED Ring bill of materials (BOM)

76 components, 28 distinct parts.

QtyPartRefs
1
TPS923610DRLR
TPS923610
U1
1
TLV75733PDBV
Texas Instruments
U2
1
RP2354A
U3
1
TPS2594720RPW
TPS25947xx
U4
1
ABM8-272-T3
Y1
2
BM03B-SRSS-TB
JST SH 3 Vert
J1, J3
1
105017-0001
USB_B_Micro
J2
1
.100
J4
2
KMS231GP LFS
CK_KMS2xxG
BTN1, BTN2
6
RCUCTE
TP1, TP2, TP3, TP4, TP5, TP6
24
158301250
LED
D1, D2, D3, D4, D5, D6, D7, D8 +16
1
LQH3NPN220MMEL
22u
L1
1
AOTA-B252010S3R3MT
3u3
L2
1
MLZ2012DR22DT000
220n
L3
2
GRM21BZ71H475ME15
4u7
C1, C20
10
CL05B104KO5NNN
100n
C2, C8, C9, C13, C14, C15, C16, C17 +2
3
CL21B225KBYNNWE
2u2
C3, C4, C5
2
GCM1555C1H150JA16D
15p
C6, C7
3
GRM188Z71A475ME15D
4u7
C10, C11, C12
1
GRM1555C1H102JA01D
1n
C21
Show 8 more
QtyPartRefs
1
CPF0603B2R55E1
2.55
R1
1
KDV06FR100ET
100m
R2
2
RC0402FR-071KL
1k
R3, R4
2
RC0402FR-0727RL
27
R5, R6
1
RC0402FR-076K8L
6k8
R7
1
RC0402FR-07430KL
430k
R8
2
RC0402FR-0747KL
47k
R9, R11
1
RC0402FR-07130KL
130k
R10

USB LED Ring design files

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

USB LED Ring: common questions

What microcontroller does the USB LED Ring use?

The USB LED Ring is built around the RP2354A, from the RP2040/RP2350 family.

How big is the USB LED Ring PCB?

The USB LED Ring measures 94.5 × 75 mm, has 2 copper layers and is 1 mm thick.

How many components are on the USB LED Ring?

76 components, from 28 distinct parts. The full bill of materials is listed on this page.

Where can I download the USB LED Ring design files?

From the atuleu/aristeus repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the USB LED Ring design in my own project?

Yes, under the terms of its CERN-OHL-S-2.0 license, which atuleu chose for the repository.

Can I test firmware for the USB LED Ring 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.

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