HardLabs

Keypad board

TheZlodziej·keypad-board·kicad-project/keypad/keypad.kicad_pcb

Keypad board layout, top view — open source ESP32 board by TheZlodziej

About the Keypad board

Keypad board is an open source ESP32 PCB design by TheZlodziej, published on GitHub. It is a 2-layer board measuring 160 × 124 mm, with 121 components from 47 distinct parts.

Its main chip is the ESP32-S3-WROOM-1, from the ESP32 family. Other key parts include the TPS61023DRLT, TLV75901PDRVT, CP2102N-A01-GQFN24, SK6812MINI-E and MCP73832-2-OT. By type, the board carries 28 resistors, 27 diodes, 21 capacitors, 17 ICs, 17 switches and 4 connectors.

Main components on the Keypad board

TPS61023DRLTESP32-S3-WROOM-1TLV75901PDRVTCP2102N-A01-GQFN24SK6812MINI-EMCP73832-2-OT

Keypad board bill of materials (BOM)

121 components, 47 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
TPS61023DRLT
IC1
1
ESP32-S3-WROOM-1
U1
1
TLV75901PDRVT
U2
1
CP2102N-A01-GQFN24
U3
12
SK6812MINI-E
U4, U5, U6, U7, U8, U9, U10, U11 +4
1
MCP73832-2-OT
U15
2
BC817
Q1, Q2
1
Si4435DDY-T1-E3
Q3
1
SCREW_TERMINAL_01X02
Screw_Terminal_01x02
J1
2
USB4105-GF-A
J2, J3
1
MICRO_SD_CARD_DET_HIROSE_DM3AT
Micro_SD_Card_Det_Hirose_DM3AT
J4
1
CMI-9605IC-0580T
Passive buzzer
B1
1
PTA3043-2010CIB102
RV1
1
WS-SLSU_Slide_Switch
S2
2
RotaryEncoder
SW1, SW2
1
SW_DTR
SW3
1
SW_RST
SW25
12
Cherry_MX
SW26, SW27, SW28, SW32, SW33, SW34, SW38, SW39 +4
1
SSD1306
Brd1
3
LED
D1, D26, D27
Show 27 more
QtyPartRefs
3
D_Schottky
D2, D17, D18
6
SD15_SOD323
D14, D15, D16, D19, D20, D21
3
ESD9B3.3ST5G
D23, D24, D25
12
D_Small
D28, D29, D30, D31, D32, D33, D34, D35 +4
1
1UH
1uH
L1
10
1UF
1uF
C1, C2, C5, C9, C11, C12, C13, C14 +2
6
10UF
10uF
C3, C4, C6, C7, C10, C17
1
0.1UF
0.1uF
C8
2
4.7UF
4.7uF
C15, C16
2
22UF
22uF
C18, C19
2
100K
100k
R1, R16
1
2k
R2
1
20K
20k
R3
1
470
R4
1
22.1K
22.1k
R5
2
4K7
4k7
R6, R21
1
47.5K
47.5k
R7
6
10K
10k
R8, R10, R11, R13, R14, R15
2
1k
R9, R17
1
732K
732k
R12
1
680
R18
1
200
R19
1
220
R20
4
5.1K
5.1k
R22, R23, R26, R27
1
1.78K
10k
R24
1
10k
R25
1
200
R28

Keypad board design files

The KiCad project lives in the TheZlodziej/keypad-board repository on GitHub; these links point at the commit this page was built from.

Keypad board: common questions

What microcontroller does the Keypad board use?

The Keypad board is built around the ESP32-S3-WROOM-1, from the ESP32 family.

How big is the Keypad board?

The Keypad board measures 160 × 124 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Keypad board?

121 components, from 47 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 Keypad board design files?

From the TheZlodziej/keypad-board 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 Keypad board design in my own project?

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

Can I test firmware for the Keypad board without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug ESP32 firmware against it before you order a PCB.

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