HardLabs

Ground fill input

dcuccia·digital-handbell·hardware/handbell/iterations/printed-bell-quote-candidate/routing/ground-fill-input.kicad_pcb

Ground fill input PCB layout, top view — open source RP2040/RP2350 board by dcuccia

About the Ground fill input PCB

Ground fill input is an open source RP2040/RP2350 PCB design by dcuccia, published on GitHub under the MIT license. It is a 2-layer board measuring 44.5 × 48.4 mm, with 84 components from 45 distinct parts.

Its main chip is the RP2040_QFN56, from the RP2040/RP2350 family. Other key parts include the LSM6DSOXTR, W25Q16JVUXIQ TR, RT9080-3.3, MCP73831T-2ACI/OT and MAX98357A. By type, the board carries 30 capacitors, 28 resistors, 8 ICs, 5 transistors, 4 inductors and 2 crystals.

It belongs with the audio and power & battery designs in this gallery.

From the project

A software and hardware project to create a digital handbell using microcontrollers and speakers and gesture recognition

Development candidate, not a released quotation package or permission to power, fabricate or order it. This separate project continues the accepted power rework toward the owner's full JLCPCB and PCBWay PCB+PCBA quotation handoff. Current native connectivity, failures and residual nets are reported in reports/completion-review.json and its Markdown companion; filenames or an autorouter's completion message are not approval.

Main components on the Ground fill input

RP2040_QFN56LSM6DSOXTRW25Q16JVUXIQ TRRT9080-3.3MCP73831T-2ACI/OTMAX98357ATPS61023DRLRBQ29700DSER

Ground fill input bill of materials (BOM)

84 components, 45 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
RP2040_QFN56
IC1
1
LSM6DSOXTR
IC4
1
W25Q16JVUXIQ TR
W25Q16JVUXIQ TR / 2MB
U1
1
RT9080-3.3
U2
1
MCP73831T-2ACI/OT
U3
1
MAX98357A
U4
1
TPS61023DRLR
U5
1
BQ29700DSER
U6
1
AO3401
Q1
1
C20917
Q2
1
DMG3415UFY
Q3
1
AO3400A
Q4
1
CSD83325L
Q5
1
USB Type C
X6
1
12MHZ/12PF
12MHz/12pF
Y1
1
504050-0291
J1
1
SM02B-SRSS-TB
J2
1
254
Keystone 254 POS
BT1
1
254
Keystone 254 NEG
BT2
1
ORANGE
CHG0
Show 25 more
QtyPartRefs
1
1N4148
D3
1
PMEG2020AEA
D4
2
Ferrite
FB1, FB2
1
RED
L0
1
1uH (MPN pending)
L1
5
10UF/16V
10uF/16V
C1, C4, C5, C19, C20
2
22PF
22pF
C2, C3
10
0.1UF
0.1uF
C6, C7, C9, C12, C13, C14, C16, C18 +2
5
1UF/25V
1uF/25V
C8, C10, C11, C15, C17
2
220PF
220pF
C21, C22
1
10NF
10nF
C25
3
22UF
22uF
C26, C27, C28
1
220pF (DNP)
C29
1
GRM155R71C104KA88D
100n 16V X7R
C30
10
10K
R1, R2, R3, R4, R5, R7, R14, R15 +2
3
1K
R6, R11, R22
3
5.1K
R8, R12, R13
2
22 ohm
R9, R10
3
100K
R16, R17, R24
1
4.7K
R20
1
732K
R23
1
RC0402FR-07330RL
330R
R25
1
RC0402FR-072K2L
2.2k
R26
1
ERJ-6BWFR033V
33m 1% 0.5W
R27
2
RC0402FR-075M1L
5.1M gate discharge
R28, R29

Ground fill input design files

The KiCad project lives in the dcuccia/digital-handbell repository on GitHub; these links point at the commit this page was built from.

Ground fill input: common questions

What microcontroller does the Ground fill input use?

The Ground fill input is built around the RP2040_QFN56, from the RP2040/RP2350 family.

How big is the Ground fill input PCB?

The Ground fill input measures 44.5 × 48.4 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Ground fill input?

84 components, from 45 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 Ground fill input design files?

From the dcuccia/digital-handbell repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.

Can I use the Ground fill input design in my own project?

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

Can I test firmware for the Ground fill input 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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