HardLabs

Apex

Shadow220108·apex·PCB/Apex.kicad_pcb

Apex PCB layout, top view — open source RP2040/RP2350 board by Shadow220108

About the Apex PCB

Apex is an open source RP2040/RP2350 PCB design by Shadow220108, published on GitHub. It is a 4-layer board measuring 17.8 × 21 mm, with 51 components from 29 distinct parts.

Its main chip is the RP2040, from the RP2040/RP2350 family. Other key parts include the W25Q16JVSS, TOREX XC6802A42XMR-G and RS3236-3.3YUTDN4. By type, the board carries 22 capacitors, 13 resistors, 4 ICs, 4 diodes, 3 connectors and 2 switches.

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

From the project

A compact devboard running on RP2040

( Credits to the Seed Studio for making this, since my board is inspired on the Xiao, I have used the pinout provided by them )

While using the Seed Studio Xiao RP2040 for one of my projects, I realised it doesn't have LiPo support and I couldn't use it, unfortunately I had to use a different MCU then, but now I designed one with the simplicity of RP2040 with being able to charge LiPo

Apex, from the project README
From the project README

Main components on the Apex

W25Q16JVSSRP2040TOREX XC6802A42XMR-GRS3236-3.3YUTDN4

Apex bill of materials (BOM)

51 components, 29 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
W25Q16JVSS
U1
1
RP2040
U2
1
TOREX XC6802A42XMR-G
U3
1
RS3236-3.3YUTDN4
RUNIC(润石)
U4
1
Q_PMOS_DGS
Q1
1
12 MHz
Y1
1
USB_C_RECEPTACLE_USB2.0_16P
USB_C_Receptacle_USB2.0_16P
J1
2
CONN_01X07
Conn_01x07
J2, J3
1
6V_500MA
6V_500mA
F1
1
C2905192
BOOT
SW1
1
C2905192
RESET
SW2
1
D_Schottky
D1
1
RED_CHG
D2
1
WS2812B
D4
1
LED_RGBA
D5
5
2.2UF
2.2uF
C1, C2, C3, C5, C6
2
100NF
100nF
C4, C11
2
15PF
15pF
C9, C10
11
0.1UF
0.1uF
C12, C13, C14, C15, C16, C17, C18, C19 +3
2
1UF
1uF
C20, C21
Show 9 more
QtyPartRefs
2
5.1K
5.1k
R1, R2
2
2.2K
R3, R7
1
11K
R4
1
100K
100k
R5
1
2.7K
2.7k
R6
2
27R
R8, R9
2
10K
R10, R14
1
1K
R12
1
4.7K
R13

Apex design files

The KiCad project lives in the Shadow220108/apex repository on GitHub; these links point at the commit this page was built from.

Apex: common questions

What microcontroller does the Apex use?

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

How big is the Apex PCB?

The Apex measures 17.8 × 21 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the Apex?

51 components, from 29 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 Apex design files?

From the Shadow220108/apex 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 Apex design in my own project?

The repository has no license, so all rights stay with Shadow220108. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Apex 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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