HardLabs

Oreo

elixpo·oreo·circuit/elixpo/power_usb.kicad_sch

This repository ships a schematic but no board layout.

About the Oreo PCB

Oreo is an open source PCB design by elixpo, published on GitHub under the CC-BY-4.0 license. It is a board, with 31 components from 24 distinct parts.

Other key parts include the USBLC6-2SC6, BQ24074RGTR and TPS63031DSKR. By type, the board carries 14 resistors, 8 capacitors, 3 ICs, 2 connectors, 2 diodes and 1 switch.

It belongs with the wearables, displays & leds and power & battery designs in this gallery.

From the project

Open-source MicroPython OS and hardware platform for an ESP32-S3 smart badge, featuring apps, OTA updates, device drivers, KiCad hardware, and the RV565 DMA-aware RGB565 video pipeline.

This KiCad 10 project is the bare-chip successor to the ESP32-S3 DevKitC breadboard. The root schematic, elixpo.kicadsch`, links four detailed sheets:

1. ESP32-S3R8 core, 16 MB external flash, 40 MHz clock and 2.4 GHz RF network. 2. USB-C data/power, BQ24074 Li-ion power-path charger and TPS63031 3.3 V rail. 3. TPS61023 5 V LCD supply, ST7789 module connector, buttons and corner LEDs. 4. MPU-6050, exact-capture IR path, WS2812 status LED, microSD and expansion.

Main components on the Oreo

USBLC6-2SC6BQ24074RGTRTPS63031DSKR

Oreo bill of materials (BOM)

31 components, 24 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
USBLC6-2SC6
STMicroelectronics
U3
1
BQ24074RGTR
BQ24074RGT
Texas Instruments
U4
1
TPS63031DSKR
TPS63031 3V3
Texas Instruments
U5
1
USB4105-GF-A
USB-C USB2 device
GCT
J1
1
LiPo JST-PH 3-pin
J2
1
JS102011SAQN
MAIN POWER
C&K
SW3
1
green power-good
D20
1
amber charging
D21
1
LQH32PN1R5NN0L
1.5uH >=1.5A
Murata
L2
3
10uF
C20, C21, C28
1
100nF
C22
1
1nF shield HF
C23
1
1uF 16V
C24
2
4.7uF 10V
C25, C26
2
5.1k
R10, R11
2
22R
R12, R13
1
1.8k (about 500mA)
R14
1
2.0k (about 800mA)
R15
1
DNP 10k NTC fallback
R16
2
100k
R17, R18
Show 4 more
QtyPartRefs
1
1M shield bleed
R19
1
46.4k 1% (6.25h)
R22
2
2.2k
R23, R24
1
3.0k 1% (about 50mA)
R25

Oreo design files

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

Oreo: common questions

How many components are on the Oreo?

31 components, from 24 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 Oreo design files?

From the elixpo/oreo repository on GitHub, which has the schematic and the BOM; the links under Design files point to each one.

Can I use the Oreo design in my own project?

Yes, under the terms of its CC-BY-4.0 license, which elixpo chose for the repository.

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