GeneralPurposeAlarmDevice
About the GeneralPurposeAlarmDevice PCB
GeneralPurposeAlarmDevice is an open source AVR/Arduino PCB design by PubInv, published on GitHub under the AGPL-3.0 license. It is a 2-layer board measuring 137.2 × 83.8 mm, with 132 components from 50 distinct parts.
Its main chip is the ATMEGA328P-AU, from the AVR/Arduino family. Other key parts include the LM7805CTG, PCF8574AT_3_518, LCD_20x4_Character-GPAD_SCH_LIB and CH340E. By type, the board carries 51 resistors, 21 capacitors, 12 diodes, 11 test points, 8 transistors and 8 connectors.
From the project
A general purpose alarm device (with software) as a module for medical devices (and others)
Main components on the GeneralPurposeAlarmDevice
GeneralPurposeAlarmDevice bill of materials (BOM)
132 components, 50 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | LM7805CTG LM7805_TO220 HANSCHIP semiconductor | TO-220-3_Horizontal_TabDown | U101 |
| 1 | ATMEGA328P-AU PI_ATMEGA328P-AU-InOrder Microchip Technology | TQFP-32_7x7mm_P0.8mm | U102 |
| 1 | PCF8574AT_3_518 | SOIC-16W_7.5x10.3mm_P1.27mm | U301 |
| 1 | LCD_20x4_Character-GPAD_SCH_LIB | LCD_2004A | U302 |
| 1 | CH340E WCH(Jiangsu Qin Heng) | MSOP-10_3x3mm_P0.5mm | U501 |
| 5 | MMBT2222A-7-F Diodes Incorporated | SOT-23 | Q201, Q202, Q203, Q204, Q205 |
| 2 | BSS138 Yangzhou Yangjie Electronic Technology Co., Ltd | SOT-23 | Q301, Q601 |
| 1 | MMBT2907ALT1G DNI ON Semiconductor | SOT-23-3 | Q602 |
| 1 | DC-005-5A-2.0-SMT / 54-00164 Barrel_Jack_Switch_SMT XKB Connectivity / Tensility International Corp | BarrelJack_CLIFF_FC681465S_SMT_Horizontal | J101 |
| 2 | 68000-102HLF 0.100_2Pin Amphenol ICC | PinHeader_1x02_P2.54mm_Vertical | J102, J103 |
| 1 | S04B-XASK-1(LF)(SN) S04B-XASK-1(LF)(SN)Rev2 JST | S04B-XASK-1(LF)(SN)Rev2 | J105 |
| 1 | 5555165-1 RJ12_6P6C_HORZ TE Connectivity | RJ12_Amphenol_54601 | J401 |
| 1 | 10118194-0001LF ???Wuerth_629105150521 ??? Molex 1050170001 USB_B_Micro_Local Amphenol ICC ??? Wuerth ???Molex | USB_Micro-B_Amphenol_10118194_Horizontal | J501 |
| 2 | 22-23-2021 Molex | Molex_KK-254_AE-6410-02A_1x02_P2.54mm_Vertical | J601, J602 |
| 1 | PS1240P02BT Buzzer_Adafruit_P1536A Soberton Inc. | Buzzer_12.2mm_9.7mm_7.62mm | BZ601 |
| 2 | 0603L100SLYR Polyfuse_Small Littelfuse | Fuse_0603_1608Metric | F101, F401 |
| 1 | 3386P-1-103LF POT 0.375 10K BOURNS | Potentiometer_Bourns_3386P_Vertical | RV301 |
| 1 | TE Connectivity 1825910-7, Dongguan Guangzhu Industrial C13828 SWITCH_TACTILE_SPST-NO_0.05A_24V TE Connectivity ALCOSWITCH Switches | Switch_Tactile_THT_6x6mm | S101 |
| 1 | B3F-4055 SWITCH_TACTILE_12mmx12mm_SPST-NO_0.05A_24V Omron Electronics | SW_PUSH-12mm_WithCap_Green | S601 |
| 3 | JLC_ToolingHole_0576mm | JLC_ToolingHole_0576mm | T1, T2, T3 |
Show 30 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | TP_GND | TestPoint_Loop_D2.54mm_Drill1.5mm_Beaded | TP101 |
| 1 | Vin | TestPoint_Loop_D2.54mm_Drill1.5mm_Beaded | TP102 |
| 1 | +5V | TestPoint_Loop_D2.54mm_Drill1.5mm_Beaded | TP103 |
| 1 | VccController | TestPoint_Loop_D2.54mm_Drill1.5mm_Beaded | TP104 |
| 1 | 3.3V | TestPoint_Loop_D2.54mm_Drill1.5mm_Beaded | TP105 |
| 1 | VBus | TestPoint_Loop_D2.54mm_Drill1.5mm_Beaded | TP201 |
| 1 | V3 | TestPoint_Loop_D2.54mm_Drill1.5mm_Beaded | TP202 |
| 1 | nCTS | TestPoint_Loop_D2.54mm_Drill1.5mm_Beaded | TP203 |
| 1 | Vcc_LCD | TestPoint_Loop_D2.54mm_Drill1.5mm_Beaded | TP401 |
| 1 | nINT | TestPoint_Loop_D2.54mm_Drill1.5mm_Beaded | TP402 |
| 1 | VccBuzzer | TestPoint_Loop_D2.54mm_Drill1.5mm_Beaded | TP501 |
| 1 | TAXM16M2GLFBET2T 16MHZ 20PF HC-49S/SMD TAE(Zhejiang Abel Elec) | Crystal_SMD_HC49-SD | XTAL101 |
| 6 | U_Box_V104_General_Alarm_Device_LED_Standoff | U_Box_V104_General_Alarm_Device_LED_Standoff | MF103, MF601, MF602, MF603, MF604, MF605 |
| 3 | SS210 Schottky 2A MDD（Microdiode Electronics） | D_SMB | D101, D103, D104 |
| 2 | LTST-C171KRKT RED 0603 Lite-On Inc. | LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder | D102, D106 |
| 1 | LED_T1.75_CLEAR_RED Lite-On Inc. | LED_5mm_Radial | D105 |
| 5 | LTW-2R3D7 LED_T1.75_CLEAR_WHITE Lite-On Inc. | LED_5mm_Radial | D201, D202, D203, D204, D205 |
| 1 | KT-0603R RED 0603 Hubei KENTO Elec | LED_0603_1608Metric | D501 |
| 5 | CC0603JRNPO9BN390 39pF YAGEO | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C101, C104, C107, C113, C114 |
| 7 | RVT47UF16V67RV0019 47uF 16V KNSCHA | CP_Elec_5x5.4 | C102, C106, C109, C112, C302, C502, C601 |
| 9 | CC0603KRX7R9BB104 100nF YAGEO | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C103, C105, C108, C110, C111, C301, C501, C503 +1 |
| 5 | RMC060315%N 1R0 TyoHM | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R101, R305, R307, R309, R310 |
| 3 | RMC 0603 10K F N 10K TyoHM | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R102, R505, R603 |
| 5 | RMC06031K1%N 1K TyoHM | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R103, R108, R109, R304, R602 |
| 2 | RMC0603391%N 39R TyoHM | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R104, R105 |
| 4 | DNI TyoHM | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R106, R107, R306, R308 |
| 16 | RMC06033301%N 330R TyoHM | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R110, R111, R112, R202, R204, R206, R208, R210 +8 |
| 11 | RMC 0603 4K7 F N 4K7 TyoHM | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R201, R203, R205, R207, R209, R301, R302, R303 +3 |
| 2 | RMC060315%N DNI TyoHM | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R506, R604 |
| 3 | RMC060315%N 1R TyoHM | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R507, R508, R601 |
GeneralPurposeAlarmDevice design files
The KiCad project lives in the PubInv/general-purpose-alarm-device repository on GitHub; these links point at the commit this page was built from.
GeneralPurposeAlarmDevice: common questions
What microcontroller does the GeneralPurposeAlarmDevice use?
The GeneralPurposeAlarmDevice is built around the ATMEGA328P-AU, from the AVR/Arduino family.
How big is the GeneralPurposeAlarmDevice PCB?
The GeneralPurposeAlarmDevice measures 137.2 × 83.8 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the GeneralPurposeAlarmDevice?
132 components, from 50 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 GeneralPurposeAlarmDevice design files?
From the PubInv/general-purpose-alarm-device 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 GeneralPurposeAlarmDevice design in my own project?
Yes, under the terms of its AGPL-3.0 license, which PubInv chose for the repository.
Can I test firmware for the GeneralPurposeAlarmDevice without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug AVR/Arduino firmware against it before you order a PCB.
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