HardLabs

Backup

ItsShadowCone·tmfl·hardware/poc-one/backup.kicad_pcb

Backup PCB layout, top view — open source RP2040/RP2350 board by ItsShadowCone
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About the Backup PCB

Backup is an open source RP2040/RP2350 PCB design by ItsShadowCone, published on GitHub. It is a 2-layer board measuring 125.5 × 116.7 mm, with 122 components from 50 distinct parts.

Its main chip is the RP2350_80QFN, from the RP2040/RP2350 family. Other key parts include the NCP1117-3.3_SOT223, W25Q128, 74HC138, 74HC595D and BQ24195LRGER. By type, the board carries 46 resistors, 31 capacitors, 19 diodes, 9 ICs, 7 transistors and 3 switches.

Main components on the Backup

RP2350_80QFNNCP1117-3.3_SOT223W25Q12874HC13874HC595DBQ24195LRGERLMV321IDBVR

Backup bill of materials (BOM)

122 components, 50 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
RP2350_80QFN
U1
1
NCP1117-3.3_SOT223
U2
1
W25Q128
Winbond Elec
U3
1
74HC138
U4
3
74HC595D
Nexperia
U9, U11, U13
1
BQ24195LRGER
U021
1
LMV321IDBVR
Texas Instruments
U22
5
SS8550 Y2 200-350
Changjiang Electronics Tech (CJ)
Q1, Q2, Q3, Q5, Q6
1
2N7002
Changjiang Electronics Tech (CJ)
Q4
1
XYC-PT0805BC-L4-D
Q7
1
ABM8-272-T3
Y1
1
Connector, USB-TYPE-C-16P
J4
1
Battery_Cell
BT1
1
LMA2718T421-OA5-2
MK1
2
SW_Push
SW1, SW2
1
BAT_SYS_PWR HY-DSIC02LS
SW3
1
Thermistor_NTC / 10k
TH1
16
LED_RABG
D1, D2, D3, D4, D5, D6, D7, D8 +8
3
LED
D18, D19, D20
1
3.3u
L1
Show 30 more
QtyPartRefs
1
2u2
L2
7
10u
C1, C5, C19, C26, C27, C35, C36
13
100n
C2, C8, C11, C12, C13, C14, C15, C16 +5
2
15p
C3, C4
4
4.7u
C6, C7, C9, C10
1
1u
C22
1
47n
C23
1
100u
C24
1
4u7
C25
1
100p
C38
1
DNF
R1
3
1k
R2, R4, R6
1
33
R3
2
5.1k
R5, R9
2
27
R7, R8
2
0
R10, R23
2
2.2k
R11, R35
4
82
R12, R15, R18, R21
4
360
R13, R16, R19, R22
5
220
R14, R24, R25, R26, R27
8
10k
R17, R20, R32, R33, R37, R42, R43, R46
4
130
R28, R29, R30, R31
1
5k1
R34
1
330
R36
1
100m
R38
1
10
R39
1
1k5
R40
1
2k
R41
1
100
R44
1
100k
R45

Backup design files

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

Backup: common questions

What microcontroller does the Backup use?

The Backup is built around the RP2350_80QFN, from the RP2040/RP2350 family.

How big is the Backup PCB?

The Backup measures 125.5 × 116.7 mm, has 2 copper layers and is 0.236 mm thick.

How many components are on the Backup?

122 components, from 50 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 Backup design files?

From the ItsShadowCone/tmfl repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.

Can I use the Backup design in my own project?

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

Can I test firmware for the Backup 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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