2 layers99.1 × 88.9 mm
4 layers99.1 × 91.4 mm
Alarm clock (v3)
- Size
- 99.1 × 91.4 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 187
- Nets
- 212
- Pads
- 750
- Tracks, vias
- 1,609, 313
- Pours
- 40
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 25 May 2016
- Updated
- 30 Mar 2026
Overview
Panel is an open-source printed circuit board by bfrigon, from the bfrigon/alarm-clock-v3 repository on GitHub, published under the CC-BY-SA-4.0 licence. It is a 4-layer board of 99.1 × 91.4 mm with 187 parts on 212 nets, routed with 1,609 tracks and 313 vias.
It is built around the ATMEGA16U2-AU, ATMEGA2560-16AU and ATWINC1500-MR210PB, with the SN74LVC2G34DBV, TPA2016D2RTJ and VS1053B-L among its other parts. Its parts include 60 capacitors, 43 resistors, 24 connectors, 12 ICs and 6 inductors. It belongs with the lEDs and displays and home automation and IoT boards and the AVR (ATmega, ATtiny) boards of this library.
Main components
12
ATMEGA16U2-AU
TQFP-32(7x7)-40℃~+85℃ 16KB 16MHz 2.7V~5.5V 22 512Byte 512Byte 8 Bit AVR Built-in FLASH TQFP-32(7x7) Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)
ATMEGA2560-16AU
TQFP-100(14x14)-40℃~+85℃ 10bit 16MHz 256KB 4.5V~5.5V 4KB 8 Bit 86 8KB AVR Built-in FLASH TQFP-100(14x14) Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)
ATWINC1500-MR210PB
-- WiFi Modules ROHSMicrochip TechnologyWiFi Modules
SN74LVC2G34DBV
SOT-23-6-40℃~+125℃ 1 1.65V~5.5V 10uA 2 32mA 32mA 4.1ns@3.3V,50pF 74LVC Unidirectional SOT-23-6 Buffers, Drivers, Receivers, Transceivers ROHSTexas InstrumentsBuffers, Drivers, Receivers, Transceivers
TPA2016D2RTJ
VQFN-20-EP(4x4)-40℃~+85℃ -80dB 0.1% 1.7W×2@8Ω、2.8W×2@4Ω、1.5W×2@4Ω、750mW×2@8Ω 2 Pairs Differential Inputs 2-Channel 2.5V~5.5V 3.5mA 90% Class D Enable/shutdown function、Filterless architecture、Digitally programmable gain、Built-in audio processing VQFN-20-EP(4x4) Audio Amplifiers ROHSTexas InstrumentsAudio Amplifiers
VS1053B-L
LQFP-48-40℃~+85℃ 1.65V~2V、2.5V~3.6V 8kHz~48kHz Encoder/decoder I2S、SPI、UART LQFP-48(7x7) Audio Interface ICs ROHSVLSI SolutionAudio Interface ICs
AP2112K-3.3
SOT253.3V 600mA CMOS Low Dropout Linear Regulator with EnableDiodes IncorporatedUncategorisedAP7312-1833W6
SOT-26Voltage Regulators - Linear, Low Drop Out (LDO) RegulatorsDiodes Incorporated
DS3231MZ/V+
SOIC-8-40℃~+85℃ 2.3V~5.5V Built-in I2C Temperature compensation、Backup power management and battery charging、Alarm function、Locking and tamper-proof、Periodic interrupt output SOIC-8 Real Time Clocks ROHSMaxim Integrated (Analog Devices)Real Time Clocks
2508053007Y0
08051 100mΩ 30Ω@100MHz 0805 Ferrite Beads ROHSFair-Rite ProductsFerrite Beads
CD1206-S01575
1206-55℃~+125℃ 150mA 1V@50mA 2.5uA@75V 400mW 4A 4ns 75V Standalone 1206 Switching Diodes ROHSBournsSwitching Diodes
CR1220-2
--40~80℃ Battery base CR1220 Phosphor bronze - Battery holder base ROHSQ&JButton And Strip Battery Connector
README
pcb/daughterboard/README.mdBill of material
Date : 2018-09-19
Doc. ID : CLKV3-SCH-06
Project : Alarm Clock (V3)
Title : Daughterboard
Part # : CLKV3-PC-06
REV. : A
Components : 70| Qty | Ref. | Description | Value | Part # | Footprint |
|---|---|---|---|---|---|
| 1 | J7 | Header - Single Row - 2 Pos | ALARM SW | DF3A-2P-2DSA | conn-header:DF3A-2P-2DSA |
| 1 | J1 | Header - Single Row - 3 Pos | LAMP | DF3A-3P-2DSA | conn-header:DF3A-3P-2DSA |
| 1 | J3 | Header - Single Row - 4 Pos | SPKR | DF3A-4P-2DSA | conn-header:DF3A-4P-2DSA |
| 1 | J2 | Header - Single Row - 8 Pos | DISPLAY | DF3A-8P-2DSA | conn-header:DF3A-8P-2DSA |
| 1 | U2 | Single inverter | - | 74AHC1G04SE-7 | smt-sot:SOT-353 |
| 1 | U3 | Dual 150mA LDO Regulator | - | AP7312-1833W6 | smt-sot:SOT23-6 |
| 1 | Q1 | Single P-Channel MOSFET 20V 10A | NTF6P02 | NTF6P02T3G | smt-sot:SOT-223 |
| 1 | U5 | Dual non-inverting buffer | - | SN74LVC2G34DBV | smt-sot:SOT23-6 |
| 1 | U4 | 2.8W/Ch Stereo Class-D Audio Amplifier | - | TPA2016D2 | smt-qfn:QFN20-EP-4x4 |
| 1 | U1 | MP3/AAC/MIDI Audio Codec | - | VS1053B | smt-qfp:QFP-7-48 |
| 10 | R4, R6, R12-R19 | Resistor | 100k | - | smt:R-0603 |
| 14 | C1-C10, C26-C27, C29-C30 | Capacitor | 100nF | - | smt:C-0603 |
| 3 | R2, R7, R11 | Resistor | 10k | - | smt:R-0603 |
| 2 | C18-C19 | Capacitor | 10nF | - | smt:C-0603 |
| 1 | R8 | Resistor | 10 | - | smt:R-0603 |
| 3 | C11, C14, C16 | Electrolytic capacitor | 10uF 6V3 | - | smt:CPL-0805 |
| 3 | C24-C25, C28 | Capacitor | 10uF | - | smt:C-0805 |
| 1 | R5 | Resistor | 1M | - | smt:R-0603 |
| 4 | C31-C34 | Capacitor | 1nF | - | smt:C-0603 |
| 5 | C15, C20-C23 | Capacitor | 1uF | - | smt:C-0805 |
| 2 | C12-C13 | Capacitor | 20pF | - | smt:C-0603 |
| 2 | R9-R10 | Resistor | 20 | - | smt:R-0603 |
| 2 | R1, R3 | Resistor | 470 | - | smt:R-0603 |
| 1 | C17 | Capacitor | 47nF | - | smt:C-0603 |
| 2 | L1-L2 | Ferrite | - | 2508053007Y0 | smt:FER-0805 |
| 1 | Y1 | Crystal | 12.288 MHz | ECS-122.8-20-3X-EN-TR | crystals:smt-CSM-3X-7x4mm |
| 4 | L3-L6 | Ferrite | - | MPZ1608S221A | smt:FER-0603 |
Parts
187| Qty | Value | Footprint | References |
|---|---|---|---|
| 26 | 100nF | smt:C-0603 | C1, C2, C3, C3, C10, C10, C11, C14, C22, C23, C24, C25, C26, C26, C27, C29 +10 |
| 18 | 100k | smt:R-0603 | R10, R12, R12, R13, R13, R14, R14, R15, R15, R16, R16, R17, R17, R18, R18, R19 +2 |
| 12 | 10k | smt:R-0603 | R1, R2, R2, R5, R6, R7, R9, R11, R11, R20, R21, R22 |
| 10 | TEST-POINT | conn-wire-pads:TEST-POINT-50 | TP1, TP2, TP3, TP4, TP5, TP6, TP7, TP8, TP9, TP10 |
| 8 | 1uF | smt:C-0805 | C4, C15, C19, C20, C20, C21, C22, C23 |
| 7 | 10uF | smt:C-0805 | C16, C17, C18, C21, C24, C25, C28 |
| 6 | 20pF | smt:C-0603 | C1, C2, C7, C8, C12, C13 |
| 4 | 1nF | smt:C-0603 | C31, C32, C33, C34 |
| 4 | MPZ1608S221A | smt:FER-0603 | L3, L4, L5, L6 |
| 3 | 10nF | smt:C-0603 | C15, C18, C19 |
| 3 | 10uF 6V3 | smt:CPL-0805 | C11, C14, C16 |
| 3 | 1M | smt:R-0603 | R5, R7, R8 |
| 3 | 1k | smt:R-0603 | R19, R23, R24 |
| 3 | Hole | conn-wire-pads:Hole-Screw-#4 | H1, H2, H3 |
| 2 | 16.00 MHz | crystals:smt-CSM-3X-7x4mm | Y1, Y2 |
| 2 | 20 | smt:R-0603 | R9, R10 |
| 2 | 22 | smt:R-0603 | R3, R4 |
| 2 | 2508053007Y0 | smt:FER-0805 | L1, L2 |
| 2 | 470 | smt:R-0603 | R1, R3 |
| 2 | CD1206-S01575 | smt:D-1206 | D1, D2 |
| 2 | CD74HC4050PWR | smt-sop:TSSOP16 | U5, U7 |
| 2 | DB-A | conn-header:HDR-M-2x08 | J4, J9 |
| 2 | DB-B | conn-header:HDR-M-1x04 | J3, J5 |
| 2 | DB-C | conn-header:HDR-M-1x02 | J6, J12 |
| 2 | HEADER-1x01 | conn-wire-pads:SolderPad-100x500 | H4, H5 |
| 2 | ICSP | conn-header:HDR-M-2x03 | J4, J7 |
| 1 | - | conn-power:CUI-P1J-021-SMT | J1 |
| 1 | 10 | smt:R-0603 | R8 |
| 1 | 12.288 MHz | crystals:smt-CSM-3X-7x4mm | Y1 |
| 1 | 1uF | smt:C-0603 | C13 |
| 1 | 22pF | smt:C-0603 | C12 |
| 1 | 47nF | smt:C-0603 | C17 |
| 1 | 500mA | smt:R-1206 | F1 |
| 1 | 74AHC1G04SE-7 | smt-sot:SOT-353 | U2 |
| 1 | ALARM SW | conn-header:DF3A-2P-2DSA | J7 |
| 1 | AP2112K-3.3 | smt-sot:SOT23-5 | U6 |
| 1 | AP7312-1833W6 | smt-sot:SOT23-6 | U3 |
| 1 | AREF | conn-wire-pads:TEST-POINT-50 | TP1 |
| 1 | ATMEGA16U2-AU | smt-qfp:QFP-7-32 | U3 |
| 1 | ATMEGA2560-16AU | smt-qfp:QFP-14-100 | U1 |
| 1 | ATWINC1500-MR210PB | misc:ATWINC1500-MR | U4 |
| 1 | CR1220 | conn-power:S8411-45R | B1 |
| 1 | DISPLAY | conn-header:DF3A-8P-2DSA | J2 |
| 1 | DS3231MZ | smt-soic:SOIC8 | U2 |
| 1 | EXT | conn-wire-pads:WP-40mil-1x05 | J14 |
| 1 | EXT-I2C | conn-wire-pads:WP-50mil-1x02 | J16 |
| 1 | EXT-PW | conn-wire-pads:WP-50mil-1x02 | J15 |
| 1 | FRONT PANEL | conn-wire-pads:WP-EDGE-RL-50mil-1x06 | J8 |
| 1 | HEADER-1x01 | conn-wire-pads:SolderPad-100x300 | H6 |
| 1 | HEADER-1x04 | conn-wire-pads:WP-50mil-1x04 | J13 |
| 1 | LAMP | conn-header:DF3A-3P-2DSA | J1 |
| 1 | MMST3904 | smt-sot:SOT23 | Q1 |
| 1 | Micro_SD | conn-io:MOLEX-MICROSD-475710001 | J5 |
| 1 | NTF6P02 | smt-sot:SOT-223 | Q1 |
| 1 | PSU | conn-header:HDR-M-2x03 | J10 |
| 1 | PSU-SIG | conn-header:HDR-M-1x04 | J6 |
| 1 | RESET | conn-wire-pads:TEST-POINT-50 | TP2 |
| 1 | RESET | switches:B3F-10XX | SW1 |
| 1 | RESET-SW | conn-wire-pads:WP-50mil-1x01 | J11 |
| 1 | SN74LVC2G34DBV | smt-sot:SOT23-6 | U5 |
| 1 | SPKR | conn-header:DF3A-4P-2DSA | J3 |
| 1 | SR05 | smt-sot:SOT-143 | DA1 |
| 1 | Solder Pad 2 | conn-wire-pads:SolderPad-100x200 | H2 |
| 1 | Solder pad 2 | conn-wire-pads:SolderPad-100x500 | H1 |
| 1 | TPA2016D2 | smt-qfn:QFN20-EP-4x4 | U4 |
| 1 | USB-MINI-B | conn-io:USB-MB_UX60SC-MB-5ST | J2 |
| 1 | VS1053B | smt-qfp:QFP-7-48 | U1 |
| 1 | WIFI-GPIO | conn-wire-pads:WP-40mil-1x07 | J17 |
The 176 most common of 187 parts.
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Questions
How big is the Panel PCB?
It measures 99.1 × 91.4 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Panel use?
187 parts, built around the ATMEGA16U2-AU, ATMEGA2560-16AU, ATWINC1500-MR210PB and SN74LVC2G34DBV. 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 Panel KiCad files?
From the bfrigon/alarm-clock-v3 repository on GitHub, at the commit this page was made from: the board is fab-files/pcb-panels/4-layer-panel/panel.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Panel design in my own project?
Its repository publishes it under the CC-BY-SA-4.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).