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2 layers94 × 90 mmDawnKey unrouted, the printed circuit board in 3D

DawnKey unrouted

tejasvswipe/dawnkey

A custom BLARE alarm clock with a 12-key MX keypad, TFT display, DS3231 real-time clock, two-AA battery input and a distinctive printable case.

Open in PCBKitView on GitHub.kicad_pcb
Size
94 × 90 mm
Copper layers
2
Thickness
1.6 mm
Parts
52
Nets
39
Pads
201
Tracks, vias
12, 0
Routed
Yes
KiCad
KiCad 7 (file 20221018)
Created
6 Oct 2026
Updated
6 Oct 2026

Overview

DawnKey unrouted is an open-source printed circuit board by tejasvswipe, from the tejasvswipe/dawnkey repository on GitHub. It is a 2-layer board of 94 × 90 mm with 52 parts on 39 nets, routed with 12 tracks and 0 vias.

Its parts include 13 diodes, 12 switches, 7 resistors, 6 capacitors and 4 ICs. It belongs with the ESP32 and RISC-V boards of this library.

README

README.md

DAWNKEY — BLARE alarm clock

A custom BLARE alarm clock with a 12-key MX keypad, TFT display, DS3231 real-time clock, two-AA battery input and a distinctive printable case. The enclosure preview uses a black battery pod, dark display bezel and black “for tejas” lettering.

gallery

preview_overall Screenshot 2026-10-07 011056

Deliverables

  • PCB source: PCB/DawnKey.kicad_pro, routed PCB/DawnKey.kicad_pcb, placement-only backup, reproducible generator and the full BOM.
  • Fabrication: Production/Gerbers.zip with copper, mask, silkscreen, board outline and separate plated/non-plated drill files; Production/placements.csv for assembly.
  • Enclosure: OpenSCAD source, print-ready STLs and per-part/assembly STEP files under CAD/.
  • Firmware: Arduino sketch and the key-by-key guide under Firmware/.
  • Build docs: power, wiring and button guide, system block diagram, sources, preview and preflight report. handoff, not a board ready to order or rely on as an alarm clock; complete full KiCad DRC, resolve the router discrepancy, inspect the boost layout and bench-test the assembled device first. The exact checks are in Production/Preflight.md.

Parts

52
QtyValueFootprintReferences
121N4148 / DO-35Diode_THT:D_DO-35_SOD27_P7.62mm_HorizontalD01, D02, D03, D04, D05, D06, D07, D08, D09, D10, D11, D12
4M3 CLEARANCEMountingHole:MountingHole_3.2mm_M3H1, H2, H3, H4
222uF 10V X7R OUTCapacitor_SMD:C_0805_2012MetricC5, C6
1100k BOOST FB BOTResistor_SMD:R_0603_1608MetricR7
1100nF BOOST HFCapacitor_SMD:C_0603_1608MetricC4
1100nF MCP DECOUPLECapacitor_SMD:C_0603_1608MetricC1
1100nF RTC DECOUPLECapacitor_SMD:C_0603_1608MetricC2
110k MCP RESET PUResistor_SMD:R_0603_1608MetricR3
110k RTC INT PUResistor_SMD:R_0603_1608MetricR2
110uF 10V X7R INCapacitor_SMD:C_0805_2012MetricC3
11k BUZZER BASEResistor_SMD:R_0603_1608MetricR1
11uH Isat>=7AInductor_SMD:L_Wuerth_MAPI-4030L1
12xAA PACK (SWITCHED)Connector_JST:JST_PH_S2B-PH-K_1x02_P2.00mm_HorizontalJ3
13.3V PIEZOBLARE:Buzzer_12x9.5RM7.6BZ1
14k7 I2C SCL PUResistor_SMD:R_0603_1608MetricR5
14k7 I2C SDA PUResistor_SMD:R_0603_1608MetricR4
1732k BOOST FB TOPResistor_SMD:R_0603_1608MetricR6
1DS3231S RTCPackage_SO:SOIC-16W_7.5x10.3mm_P1.27mmU3
1I2C EXPANSION: 3V3 GND SDA SCLConnector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_VerticalJ2
1MCP23017-I/SOPackage_SO:SOIC-28W_7.5x17.9mm_P1.27mmU2
1MMBT3904 / NPNPackage_TO_SOT_SMD:SOT-23Q1
1MX-STYLE KEY 01BLARE:SW_MX_1uSW01
1MX-STYLE KEY 02BLARE:SW_MX_1uSW02
1MX-STYLE KEY 03BLARE:SW_MX_1uSW03
1MX-STYLE KEY 04BLARE:SW_MX_1uSW04
1MX-STYLE KEY 05BLARE:SW_MX_1uSW05
1MX-STYLE KEY 06BLARE:SW_MX_1uSW06
1MX-STYLE KEY 07BLARE:SW_MX_1uSW07
1MX-STYLE KEY 08BLARE:SW_MX_1uSW08
1MX-STYLE KEY 09BLARE:SW_MX_1uSW09
1MX-STYLE KEY 10BLARE:SW_MX_1uSW10
1MX-STYLE KEY 11BLARE:SW_MX_1uSW11
1MX-STYLE KEY 12BLARE:SW_MX_1uSW12
1SS14 1A SCHOTTKYDiode_SMD:D_SMAD13
1TFT / ST7789Connector_PinHeader_2.54mm:PinHeader_1x08_P2.54mm_VerticalJ1
1TPS61023 2xAA BOOSTPackage_TO_SOT_SMD:SOT-563U4
1XIAO ESP32-C3Seeed_Studio_XIAO_Series:XIAO-ESP32-C3-SMDU1

Questions

How big is the DawnKey unrouted PCB?

It measures 94 × 90 mm and has 2 copper layers, 1.6 mm thick.

What parts does the DawnKey unrouted use?

52 parts. 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 DawnKey unrouted KiCad files?

From the tejasvswipe/dawnkey repository on GitHub, at the commit this page was made from: the board is PCB/DawnKey_unrouted.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.

Can I use the DawnKey unrouted design in my own project?

Its repository states no licence, so its author keeps all rights: ask tejasvswipe before reusing the design.

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