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Bottom board palmtop

ZeroPhone·Snowdive-PCB·bottom_board_palmtop/bottom_board_palmtop.kicad_pcb

Bottom board palmtop layout, top view — open source RP2040/RP2350 board by ZeroPhone
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About the Bottom board palmtop

Bottom board palmtop is an open source RP2040/RP2350 PCB design by ZeroPhone, published on GitHub under the CERN-OHL-S-2.0 license. It is a 2-layer board measuring 110 × 89 mm, with 327 components from 70 distinct parts.

Its main chip is the RP2040, from the RP2040/RP2350 family. Other key parts include the TPAZ1043-04F, W25Q16JV, XL9535QF24, SY6280AAAC and WUSB3801Q-12/TR. By type, the board carries 106 resistors, 81 capacitors, 53 ICs, 30 diodes, 14 connectors and 13 transistors.

From the project

ZeroPhoneNext PCBs

Main components on the Bottom board palmtop

TPAZ1043-04FW25Q16JVRP2040XL9535QF24SY6280AAACWUSB3801Q-12/TRFSUSB42UMXFUSB302B01MPXTMP102xxDRLAP62600SJ-7MIC2876-5.0PCF85363ATTBL24C32ALP4034QVFTPS2121RUXRIS31FL3193CH334PAP2114GL823K-HCY04

Bottom board palmtop bill of materials (BOM)

327 components, 70 distinct parts.

QtyPartRefs
24
TPAZ1043-04F
U1, U2, U3, U4, U7, U8, U9, U10 +16
1
W25Q16JV
U5
1
RP2040
U6
2
XL9535QF24
U21, U28
6
SY6280AAAC
U24, U25, U30, U31, U46, U53
2
WUSB3801Q-12/TR
U27, U29
5
FSUSB42UMX
PI3USB42ZMEX
U32, U35, U39, U49, U50
1
FUSB302B01MPX
U33
1
TMP102xxDRL
U34
1
AP62600SJ-7
U36
1
MIC2876-5.0
U37
1
PCF85363ATT
U38
1
BL24C32A
U40
1
LP4034QVF
U43
1
TPS2121RUXR
U44
1
IS31FL3193
U45
1
CH334P
U47
1
AP2114
U48
1
GL823K-HCY04
GENESYS(创惟)
U51
8
2N7002DW-7-F
Q1, Q2, Q4, Q7, Q8, Q14, Q18, Q19
Show 50 more
QtyPartRefs
4
CJ2305
Q3, Q5, Q6, Q9
1
HSM4313
Q11
2
12MHz
Y1, Y2
1
SC-20S,32.768kHz,20PPM,7pF
Y3
1
Left USB
J1
1
Right USB
J2
1
Center USB
J3
1
FFC_2
J4
1
FFC_1
J5
4
Battery
J7, J8, J9, J10
2
SH 4P
J12, J50
2
SH 2P
J45, J54
1
TF-01A
J49
1
FST-5020
BUZZER1
4
2A PTC
F1, F2, F3, F4
2
ON/OFF
SW2, SW10
1
SW_EN
SW3
3
EVQPUL02K
SW7, SW8, SW9
1
SW_QW_VCC
SW13
1
SIQ-02FVS3
SAMZO(三佐)
SW14
2
LED 0603 Green
Green1, Green2
4
LED 0603 Orange
LED1, LED3, LED4, LED5
2
SK6812MINI-EA
LED6, LED7
3
LED 0603
LED8, LED10, LED11
14
D_Schottky_Small
D1, D2, D3, D4, D5, D10, D16, D18 +6
12
KBLED
D6, D7, D8, D9, D11, D12, D13, D14 +4
3
SS34
D15, D17, D31
1
5V1
D20
1
FDSD0518 1uH
L1
2
LQH5BPN 1R0
L3, L4
44
100nF
C1, C2, C4, C5, C6, C7, C13, C14 +36
17
1uF
C3, C8, C9, C10, C18, C21, C22, C31 +9
2
12pF
C11, C12
5
22uF
C32, C33, C34, C41, C44
2
10uF/20V
C36, C37
6
10uF
C39, C40, C51, C54, C58, C59
4
10uF
C52, C53, C67, C68
1
47nF
C65
15
27R
R1, R14, R18, R20, R21, R52, R62, R63 +7
27
51K
R2, R30, R32, R34, R36, R40, R43, R44 +19
9
270R
R3, R4, R5, R6, R7, R8, R9, R56 +1
14
10K
R10, R19, R29, R31, R54, R68, R72, R74 +6
14
2K
R11, R12, R13, R16, R28, R42, R48, R61 +6
12
5.1K
R15, R17, R23, R24, R25, R38, R41, R51 +4
4
1K
R22, R26, R27, R105
2
100pF
R33, R55
4
240K
R35, R37, R46, R73
1
33K
R39
1
0R
R45
3
22K
R71, R89, R91

Bottom board palmtop design files

The KiCad project lives in the ZeroPhone/Snowdive-PCB repository on GitHub; these links point at the commit this page was built from.

Bottom board palmtop: common questions

What microcontroller does the Bottom board palmtop use?

The Bottom board palmtop is built around the RP2040, from the RP2040/RP2350 family.

How big is the Bottom board palmtop?

The Bottom board palmtop measures 110 × 89 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Bottom board palmtop?

327 components, from 70 distinct parts. The full bill of materials is listed on this page.

Where can I download the Bottom board palmtop design files?

From the ZeroPhone/Snowdive-PCB repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Bottom board palmtop design in my own project?

Yes, under the terms of its CERN-OHL-S-2.0 license, which ZeroPhone chose for the repository.

Can I test firmware for the Bottom board palmtop 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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