2 layers89.9 × 42.7 mm
Monolith
Monolith-BCI/Trillium-PCB
We're a group of teens working on creating a BCI PCB to start running our own experiments on noise filtering, signal processing speed, and data collection.
89 parts5
2 layers97.8 × 110 mm
Clock
jpt1729/Alarm-ClockCustom built alarm clock. I was partly inspired by this https://busy.bar/. I also just wanted ot make a cool custom project and right now I only have an Alexa next to my bed so I can't actually see the current time, but…
- Size
- 97.8 × 110 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 36
- Nets
- 70
- Pads
- 396
- Tracks, vias
- 232, 38
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 4 Jun 2025
- Updated
- 24 Jul 2025
Overview
Clock is an open-source printed circuit board by jpt1729, from the jpt1729/Alarm-Clock repository on GitHub. It is a 2-layer board of 97.8 × 110 mm with 36 parts on 70 nets, routed with 232 tracks and 38 vias.
It is built around the ESP32-S3-MINI-1-N8 and AMS1117-3.3. Its parts include 7 connectors, 5 resistors, 2 ICs, 2 transistors and 2 switches. It belongs with the lEDs and displays boards and the ESP32 boards of this library.
Main components
2
ESP32-S3-MINI-1-N8
SMD-104.5dBm -40℃~+85℃ 2.4GHz 20.5dBm 330mA 3V~3.6V 97mA Bluetooth5.0 ESP32-S3FN8 Chip On-board PCB Antenna UART、SPI、I2C、I2S、USB SMD WiFi Modules ROHSEspressif SystemsWiFi Modules
AMS1117-3.3
SOT-223-40℃~+125℃ 0.003%Vout 1 1.1V@(800mA) 15V 1A 3.3V 5mA 72dB@(120Hz) Fixed Over Current Protection、Short Circuit Protection、Thermal shutdown Positive SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSAdvanced Monolithic SystemsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
README
README.mdAlarm-Clock
Custom built alarm clock. I was partly inspired by this https://busy.bar/. I also just wanted ot make a cool custom project and right now I only have an Alexa next to my bed so I can't actually see the current time, but with this it should both wake me up and it should tell me the time :)
What this basically is its an ESP32 controlled alarm clock that connects to Wifi has a 1.9" LCD display and a snooze bar. It serves as a clock and an alarm (as of now, but I want to program it a bit more in the future!)
When I first learned about making PCBs this (along with a keyboard [which I already made!]) was one of the projects I wanted to try my hand at so I am happy I got to do it!
The plan to make the case a bit easier to print is to print the top part out and then the bottom part out and connect the two with a soldering iron. This will use a lot less plastic (if not I will basically be printing a solid block of plastic).
Photos
BOM
| Item | Quantity Used | Quantity Purchased | Designator | Part Number / Description | Link | Cost |
|---|---|---|---|---|---|---|
| Case | 1 | Custom Case | ||||
| PCB | 1 | 5 | Custom PCB | $8.90 | ||
| JST Connector | 4 | 5 | JST-XH-A 5 | LCSC | $0.42 | |
| JST Connector | 2 | 5 | JST-XH-A 8 | LCSC | $0.66 | |
| MCU | 1 | 1 | ESP-32-S3-MINI-1 | LCSC | $5.11 | |
| Buzzer | 2 | 5 | TMB12A05 | LCSC | $0.90 | |
| Capacitor | 1 | 100 | C1 | 0603 1uF (100nF) | LCSC | $0.24 |
| USB Connector | 1 | 1 | J1 | USB-C USB4105-GF-A | LCSC | $1.16 |
| LCD Display | 1 | 10 | 1.9" LCD | AliExpress | $3.25 | |
| Diodes | 2 | 10 | 40V 200mA NPN TO-92 | LCSC | $0.38 | |
| Resistor | 1 | 100 | R1 | 10k Ohm 0603 | LCSC | $0.11 |
| Resistor | 2 | 100 | R2, R3 | 5.1k Ohm 0603 | LCSC | $0.12 |
| Resistor | 2 | 100 | R4, R5 | 1k Ohm 0603 | LCSC | $0.11 |
| Switch | 1 | 10 | SW1 | Gateron Low Profile | AliExpress | $5.79 |
| Encoder | 1 | 5 | ENC1 | EC11 Rotary Encoder | AliExpress | $0.99 |
| Voltage Regulator | 1 | 5 | U1 | AMS1117-3.3 | LCSC | $0.87 |
| SXH-001T-P0.6 | 100 | Terminal pin (x100) | LCSC | $1.08 | ||
| XHP-5 | 20 | 5-pin housing (x20) | LCSC | $0.46 | ||
| XHP-8 | 20 | 8-pin housing (x20) | LCSC | $0.65 | ||
| Connector Kit (Amazon) | SXH-001T-P0.6, XHP-5, XHP-8 Assortment | Amazon | $6.97 | |||
| Shipping JLC PCB | $22.73 | |||||
| Shipping LCSC | $17.39 | |||||
| Shipping AliExpress | $0.00 | |||||
| Hotplate | 1 | 1 | Soldering Hotplate | AliExpress | $20.05 | |
| Total | $77.72 |
Parts
36| Qty | Value | Footprint | References |
|---|---|---|---|
| 9 | VAL** | Panelization.pretty-master:mouse-bite-5mm-slot | mouse-bite-5mm-slot, mouse-bite-5mm-slot, mouse-bite-5mm-slot, mouse-bite-5mm-slot, mouse-bite-5mm-slot, mouse-bite-5mm-slot, mouse-bite-5mm-slot, mouse-bite-5mm-slot, mouse-bite-5mm-slot |
| 4 | Conn_01x05 | Connector_JST:JST_XH_B5B-XH-A_1x05_P2.50mm_Vertical | J3, J4, J5, J8 |
| 2 | 1kΩ | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | R4, R5 |
| 2 | 2N3904 | Package_TO_SOT_THT:TO-92_HandSolder | Q1, Q2 |
| 2 | 5.1kΩ | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R2, R3 |
| 2 | Buzzer | Buzzer_Beeper:Buzzer_12x9.5RM7.6 | BZ1, BZ2 |
| 2 | Conn_01x08 | Connector_JST:JST_XH_B8B-XH-A_1x08_P2.50mm_Vertical | J2, J6 |
| 1 | 0.1µF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C1 |
| 1 | 10kΩ | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R1 |
| 1 | AMS1117-3.3 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U2 |
| 1 | ESP32-S3-MINI-1 | RF_Module:ESP32-S2-MINI-1 | U1 |
| 1 | Keyswitch | marbastlib-xp-gateron_lp:SW_KS33_1u | S1 |
| 1 | RotaryEncoder_Switch_MP | ScottoKeebs_Scotto:Encoder_EC11_MX | SW1 |
| 1 | USB_C_Receptacle | Connector_USB:USB_C_Receptacle_GCT_USB4105-xx-A_16P_TopMnt_Horizontal | J1 |
| 1 | ~ | CustomLibrary:TZT_1.9in_TFT_ST7789 | LCD1 |
The 31 most common of 36 parts.
Similar boards
- 2 layers92 × 92 mm
- 4 layers65.6 × 91.8 mm
- 2 layers88.8 × 52.3 mm
MM36-Data Expansion
KazanNinja/MM36-Data-Hub
ESP32 based DAQ board. Fit with a 4 external 16bit 5V capable ADCs, 6-DOF IMU, and GPS breakout. Has two 5V > 3.3V & 12V > 3.3V voltage dividers
84 parts1 - 2 layers25 × 38 mm
- 2 layers88 × 58.5 mm
- 4 layers62 × 42 mm
Hybrid Controller
DesignStraub/ringwheel-hybrid-drone
A 5-inch FPV drone whose prop ducts fold down and become wheels. Design study in Fusion 360 and KiCad, CC BY-NC-SA 4.0.
103 parts - 2 layers52.8 × 67 mm
Robotcontroller
eet-cheez/RoverDrive-Hardware
The robot chassis needed to be changed to fit the PCB. Files have been attached if needed.
51 parts
Questions
How big is the Clock PCB?
It measures 97.8 × 110 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Clock use?
36 parts, built around the ESP32-S3-MINI-1-N8 and AMS1117-3.3. 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 Clock KiCad files?
From the jpt1729/Alarm-Clock repository on GitHub, at the commit this page was made from: the board is PCB/clock.kicad_pcb and its schematic PCB/clock.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Clock design in my own project?
Its repository states no licence, so its author keeps all rights: ask jpt1729 before reusing the design.