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Ink screen badge for Undercity

cheyao·inkbadge·hardware/inkbadge/inkbadge.kicad_pcb

Ink screen badge for Undercity PCB layout, top view — open source RP2040/RP2350 board by cheyao

About the Ink screen badge for Undercity PCB

Ink screen badge for Undercity is an open source RP2040/RP2350 PCB design by cheyao, published on GitHub under the SHL-2.1 license. It is a 2-layer board measuring 96.8 × 91.4 mm, with 86 components from 31 distinct parts.

Its main chip is the RP2350A, from the RP2040/RP2350 family. Other key parts include the NCP1117-3.3_SOT223, SRV05-4, C262567, W25Q128JVS and TP4056-42-ESOP8. By type, the board carries 40 capacitors, 16 resistors, 11 diodes, 6 ICs, 6 switches and 2 transistors.

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

From the project

Undercity eink PCB badges controlled by a rp2350

Official badges for undercity (Hackathon @ Github HQ, https://highway.hackclub.com/)

Find the firmware here! (Start made by me, finished by spc & mpk :D)

Specs: - 4x User buttons - RP2350A - Big big flash - Super cool pcie connector - Working firmware - Onboard eink module - 6 neopixels go flash flash - Pretty art by bnuuuuyguy! - Awesome artline by acon (@acornitum) - Check out pcb online here

Ink screen badge for Undercity, from the project README
From the project README

Main components on the Ink screen badge for Undercity

RP2350ANCP1117-3.3_SOT223SRV05-4C262567W25Q128JVSTP4056-42-ESOP8

Ink screen badge for Undercity bill of materials (BOM)

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

QtyPartRefs
1
RP2350A
U1
1
NCP1117-3.3_SOT223
U2
1
SRV05-4
U3
1
C262567
Conn
U4
1
W25Q128JVS
U5
1
TP4056-42-ESOP8
U6
1
AO3401A
Q2
1
IRLML2060
Q3
1
C20625731
12MHz 10pf
Y1
1
C5454948
Micro_SD_Card
J1
1
USB_C_RECEPTACLE_USB2.0_14P
USB_C_Receptacle_USB2.0_14P
J3
6
SW_Push
SW1, SW2, SW3, SW4, SW5, SW6
4
MBR0530
D1, D2, D3, D11
1
LED
D4
6
WS2812B-2020
D5, D6, D7, D8, D9, D10
1
3.3U
3.3u
L1
1
C167808
10uH 1A
L2
5
10UF
10uF
C1, C5, C9, C19, C28
16
100NF
100nF
C2, C8, C11, C12, C13, C14, C15, C16 +8
2
15PF
15pF
C3, C4
Show 11 more
QtyPartRefs
4
4.7UF
4.7uF
C6, C7, C10, C40
10
1UF
1uF
C20, C21, C23, C24, C25, C26, C30, C31 +2
3
4.7UF
4.7uF
C27, C29, C39
2
10K
10k
R1, R13
3
1k
R2, R4, R6
3
5.1K
5.1k
R3, R5, R9
2
27
R7, R8
2
1.5K
1.5k
R10, R14
2
470
R11, R15
1
0.47
R12
1
33
R16

Ink screen badge for Undercity design files

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

Ink screen badge for Undercity: common questions

What microcontroller does the Ink screen badge for Undercity use?

The Ink screen badge for Undercity is built around the RP2350A, from the RP2040/RP2350 family.

How big is the Ink screen badge for Undercity PCB?

The Ink screen badge for Undercity measures 96.8 × 91.4 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Ink screen badge for Undercity?

86 components, from 31 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 Ink screen badge for Undercity design files?

From the cheyao/inkbadge 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 Ink screen badge for Undercity design in my own project?

It is published under SHL-2.1, which limits how it may be reused; read the license before building on it.

Can I test firmware for the Ink screen badge for Undercity 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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