2 layers77.4 × 45.4 mm
Blare
jeffmc6767/Blare-clock
This is my alarm clock with a display, buzzer and 4 buttons to customize it.
11 parts
4 layers21 × 17.8 mm
XIAO ESP32C3 v1.3
jeffmc6767/Blare-clockThis is my alarm clock with a display, buzzer and 4 buttons to customize it.
- Size
- 21 × 17.8 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 68
- Nets
- 41
- Pads
- 211
- Tracks, vias
- 449, 128
- Pours
- 11
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 9 Sep 2026
- Updated
- 25 Sep 2026
Overview
XIAO ESP32C3 v1.3 is an open-source printed circuit board by jeffmc6767, from the jeffmc6767/Blare-clock repository on GitHub. It is a 4-layer board of 21 × 17.8 mm with 68 parts on 41 nets, routed with 449 tracks and 128 vias.
It is built around the ESP32-C3FH4, TLV75733PDBVR-MS and LP0404N3T5G, with the MSK4005, U.FL-R-SMT-1 and UBF31-0171 among its other parts. Its parts include 28 capacitors, 14 resistors, 3 ICs, 2 connectors and 2 inductors. It belongs with the ESP32 and RISC-V boards of this library.
Main components
6
ESP32-C3FH4
QFN-32-EP(5x5)160MHz 32 Bit 3V~3.6V 400KB RISC-V Watchdog reset、Software reset、Built-in general-purpose timer、Programmable watchdog、Built-in temperature sensor、True random number generator (TRNG)、Storage encryption、Infrared remote control QFN-32-EP(5x5) Microcontrollers (MCU/MPU/SOC) ROHSEspressif SystemsMicrocontrollers (MCU/MPU/SOC)
TLV75733PDBVR-MS
SOT-23-5SOT-23-5 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSMSKSEMIUncategorised
LP0404N3T5G
SOT-883-31 P-Channel 1.2V 1.4A 152pF 18.5pF 2.2Ω@1.5V 2.8nC@4.5V 20V 6pF P-Channel SOT-883-3 MOSFETs ROHSLeshan Radio (LRC)MOSFETs
MSK4005
SOD-523-55℃~+125℃ 150uA@40V 490mV@500mA 500mA 50V Independent SOD-523 Schottky Diodes ROHSShikuesSchottky Diodes
U.FL-R-SMT-1
Up to 6GHz Ultra Small Surface Mount Male Coaxial Connectors U.FL SeriesHirose ElectricUncategorised
UBF31-0171
UncategorisedMtconn Electronics
README
README.mdBlare clock
This is my alarm clock with a display, buzzer and 4 buttons to customize it.
Features:
- It shows current time
- Custom alarms
- adjustable with switches.
Quick start:
- Get all the needed parts
- Solder the pcb - exclude the switches right now.
- Place the heatset inserts into the case, and install the PCB
- Next, solder the switches, and place the top layer under the switches.
- DONE!
Image gallery:
My case:
My PCB:
BOM:
1x PCB: 5$ 1x Seeed XIAO ESP32C3 4x MX-Style Keyboard Switches 4x White Blank DSA Keycaps 0x Through-Hole 1N4148 Diodes 1x 2.25in TFT Screen 1x 3.3V Piezo Buzzer 1x 2.54mm 8 Pin Male Header (For connecting your screen) 8x 20cm Female-Female Jumper Wires (For connecting your screen off of the pcb) 4x M3x5x4 Heatset Inserts 4x M3x8mm Screws 4x M3x16mm Screws
Parts
68| Qty | Value | Footprint | References |
|---|---|---|---|
| 7 | 100nF | XIAO ESP32C3_v1.3:C0201 | C3, C5, C7, C10, C45, C50, C53 |
| 7 | 2.2uF | XIAO ESP32C3_v1.3:C0201 | C1, C4, C23, C39, C40, C43, C54 |
| 6 | DNP | XIAO ESP32C3_v1.3:TP-D45MIL | TP1, TP2, TP3, TP4, TP5, TP6 |
| 3 | DNP | XIAO ESP32C3_v1.3:C0201 | C11, C12, C13 |
| 2 | 0R | XIAO ESP32C3_v1.3:R0201 | R7, R32 |
| 2 | 0R | XIAO ESP32C3_v1.3:C0201 | C15, C49 |
| 2 | 1.6pF | XIAO ESP32C3_v1.3:C0201 | C14, C48 |
| 2 | 10k | XIAO ESP32C3_v1.3:R0201 | R4, R6 |
| 2 | 12pF | XIAO ESP32C3_v1.3:C0201 | C41, C42 |
| 2 | 1uF | XIAO ESP32C3_v1.3:C0201 | C2, C44 |
| 2 | 22R | XIAO ESP32C3_v1.3:R0201 | R8, R10 |
| 2 | 22pF | XIAO ESP32C3_v1.3:C0201 | C8, C9 |
| 2 | 2nH | XIAO ESP32C3_v1.3:L0201 | L1, L3 |
| 2 | 5.1k | XIAO ESP32C3_v1.3:R0201 | R1, R2 |
| 2 | DNP | XIAO ESP32C3_v1.3:R0201 | R3, R21 |
| 2 | DNP | XIAO ESP32C3_v1.3:TP-80X40MIL | BAT0, GND0 |
| 2 | DNP | XIAO ESP32C3_v1.3:H7-HALF-HOLE-2.54 | J1, J2 |
| 2 | TD-1183SN-A3N-D1R | XIAO ESP32C3_v1.3:BUTTON_TD1183SA | BOOT0, RST0 |
| 1 | XIAO ESP32C3_v1.3:LOGO-SEEED-NEW-1X9.6MM | U$2 | |
| 1 | XIAO ESP32C3_v1.3:SOT-25 | U1 | |
| 1 | 100k | XIAO ESP32C3_v1.3:R0201 | R9 |
| 1 | 10pF | XIAO ESP32C3_v1.3:C0201 | C6 |
| 1 | 1R | XIAO ESP32C3_v1.3:R0201 | R5 |
| 1 | 2.2k | XIAO ESP32C3_v1.3:R0201 | R31 |
| 1 | 2.7k | XIAO ESP32C3_v1.3:R0201 | R22 |
| 1 | 32.768k/DST1610A | XIAO ESP32C3_v1.3:X2-SMD-1.6X1.0X0.5MM | X2 |
| 1 | 40MHz/306011483 | XIAO ESP32C3_v1.3:X4-SMD-2.0X1.6X0.5MM | X4 |
| 1 | 6V_500mA_Fuse | XIAO ESP32C3_v1.3:F0603 | F1 |
| 1 | ESP32-C3FH4 | XIAO ESP32C3_v1.3:QFN32G-0.5-5X5MM | U4 |
| 1 | LP0404N3T5G | XIAO ESP32C3_v1.3:PMOS_1.0_0.6_0.35MM | Q1 |
| 1 | MSK4005 | XIAO ESP32C3_v1.3:SOD-523 | D1 |
| 1 | RED | XIAO ESP32C3_v1.3:LED-0402 | CHG0 |
| 1 | TLV75733PDBVR | XIAO ESP32C3_v1.3:SOT-25 | U2 |
| 1 | U.FL-R-SMT-1 | XIAO ESP32C3_v1.3:U-FL3P-SMD-2.6X2.6X1.0MM | ANT0 |
| 1 | UBF31-0171 | XIAO ESP32C3_v1.3:USB2.0-TYPE-C | USB0 |
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Questions
How big is the XIAO ESP32C3 v1.3 PCB?
It measures 21 × 17.8 mm and has 4 copper layers, 1.6 mm thick.
What parts does the XIAO ESP32C3 v1.3 use?
68 parts, built around the ESP32-C3FH4, TLV75733PDBVR-MS, LP0404N3T5G and MSK4005. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the XIAO ESP32C3 v1.3 KiCad files?
From the jeffmc6767/Blare-clock repository on GitHub, at the commit this page was made from: the board is PCB/Schematic and simbols /202003511_XIAO ESP32C3_v1.3_SCH&PCB_260116/XIAO ESP32C3_v1.3.kicad_pcb and its schematic PCB/Blare.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the XIAO ESP32C3 v1.3 design in my own project?
Its repository states no licence, so its author keeps all rights: ask jeffmc6767 before reusing the design.