4 layers99.9 × 69.9 mm
2 layers89 × 51 mm
Multimeter
membaye/multimeter- Size
- 89 × 51 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 62
- Nets
- 82
- Pads
- 267
- Tracks, vias
- 441, 312
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 4 Mar 2025
- Updated
- 18 Apr 2025
Overview
Multimeter is an open-source printed circuit board by membaye, from the membaye/multimeter repository on GitHub. It is a 2-layer board of 89 × 51 mm with 62 parts on 82 nets, routed with 441 tracks and 312 vias.
It is built around the ATSAMD21G18A-AU, CH340C and MCP73871EV, with the AO3407A, XC6206P332MR and BU2032SM-JJ-GTR among its other parts. Its parts include 17 capacitors, 17 resistors, 11 ICs, 8 diodes and 2 switches. It belongs with the sensors and measurement boards and the SAM D and SAM and NXP (LPC, Kinetis, i.MX RT) boards of this library.
Main components
7
ATSAMD21G18A-AU
TQFP-48-40℃~+85℃ 1.62V~3.6V 10bit 12bit 256KB 32 Bit 32KB 38 48MHz ARM Cortex-M0+ Built-in FLASH 上电复位(POR)、欠压检测(BOR/LVD/LVR/LVI)、看门狗复位、内置通用定时器、硬件CRC、日历功能、触控功能 TQFP-48(7x7) Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)
CH340C
SOP-16-20℃~+70℃ 2Mbps 3.3V、5V 50uA 7mA Transceiver USB 2.0 SOP-16 USB Converters ROHSWCH (Nanjing Qinheng Microelectronics)USB ConvertersMCP73871EV
-ModulesMicrochip Technology
AO3407A
SOT-231 P-Channel 1.4W 1.8V 14.3nC@4.5V 30V 37mΩ@10V、52mΩ@4.5V 4.2A 700pF 75pF SOT-23 MOSFETs ROHSUMWMOSFETsXC6206P332MR
SOT-23-40℃~+85℃@(Ta) 1 1uA 200mA 3.3V 6V Fixed Over Current Protection Positive SOT-23-3L Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSTorex SemiconductorVoltage Regulators - Linear, Low Drop Out (LDO) RegulatorsBU2032SM-JJ-GTR
SMD-40℃~+280℃ SMD Button And Strip Battery Connector ROHSMPDButton And Strip Battery Connector
TYPE-C-31-M-12
SMD-30℃~+80℃ 1 10,000 cycles 16P 20V 5A 7.35mm Female Surface Mount, Right Angle Type-C SMD USB Connectors ROHSHRO ElectronicsUSB Connectors
Parts
62| Qty | Value | Footprint | References |
|---|---|---|---|
| 11 | 100nF | Capacitor_SMD:C_0402_1005Metric | C1, C2, C3, C8, C9, C10, C11, C12, C13, C15, C16 |
| 4 | 10uF | Capacitor_SMD:C_0603_1608Metric | C4, C6, C7, C17 |
| 3 | 470 | Resistor_SMD:R_0402_1005Metric | R6, R7, R8 |
| 3 | 6V TVS | Diode_SMD:D_0402_1005Metric | D1, D2, D3 |
| 3 | LED | LED_SMD:LED_0402_1005Metric | D4, D5, D6 |
| 2 | 10k | Resistor_SMD:R_0402_1005Metric | R3, R12 |
| 2 | 1M | Resistor_SMD:R_0402_1005Metric | R5, R14 |
| 2 | 1k | Resistor_SMD:R_0402_1005Metric | R11, R16 |
| 2 | 5.1k | Resistor_SMD:R_0402_1005Metric | R1, R2 |
| 2 | ALLIGATOR CLIP PAD | TestPoint:TestPoint_THTPad_4.0x4.0mm_Drill2.0mm | H1, H2 |
| 2 | TLV9061xDCK | Package_TO_SOT_SMD:SOT-353_SC-70-5 | U6, U8 |
| 2 | TMUX1204DGSR | footprints:DGS0010A-MFG | U5, U9 |
| 2 | TVS | Diode_SMD:D_0402_1005Metric | D7, D8 |
| 1 | 0.1 | Resistor_SMD:R_0402_1005Metric | R15 |
| 1 | 100k | Resistor_SMD:R_0402_1005Metric | R13 |
| 1 | 10k NTC | Resistor_SMD:R_0402_1005Metric | TH1 |
| 1 | 16.9k | Resistor_SMD:R_0402_1005Metric | R9 |
| 1 | 1uF | Capacitor_SMD:C_0402_1005Metric | C14 |
| 1 | 3.3k | Resistor_SMD:R_0402_1005Metric | R10 |
| 1 | 4.7uF | Capacitor_SMD:C_0402_1005Metric | C5 |
| 1 | 58.8k | Resistor_SMD:R_0402_1005Metric | R4 |
| 1 | 64.9k | Resistor_SMD:R_0402_1005Metric | R17 |
| 1 | AO3407A | footprints:SOT-23-3L_AOS | U3 |
| 1 | ATSAMD21G18A-A | Package_QFP:TQFP-48_7x7mm_P0.5mm | U11 |
| 1 | BU2032SM-JJ-GTR | footprints:BAT_BU2032SM-JJ-GTR | BATTERY |
| 1 | Buzzer | footprints:SM_CPT_9X9_CUD | BZ1 |
| 1 | CH340C | Package_SO:SOIC-16_3.9x9.9mm_P1.27mm | U2 |
| 1 | DP3T | footprints:SW-TH_SK-23D05-G070 | SW2 |
| 1 | IRLZ44NSTRRPBF | footprints:TRANS_IRLZ44NSTRL_INF | U7 |
| 1 | LOGO | LOGO | G*** |
| 1 | MCP73871 | Package_DFN_QFN:QFN-20-1EP_4x4mm_P0.5mm_EP2.5x2.5mm | U4 |
| 1 | SPDT MK-12C02-G025 | footprints:MK-12C02_SW | SW1 |
| 1 | USB_C_Receptacle_USB2.0_14P | Connector_USB:USB_C_Receptacle_GCT_USB4105-xx-A_16P_TopMnt_Horizontal | J1 |
| 1 | XC6206P332MR | Package_TO_SOT_SMD:SOT-23 | U1 |
| 1 | ~ | footprints:HS HS91L02W2C01_OLED | U10 |
Questions
How big is the Multimeter PCB?
It measures 89 × 51 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Multimeter use?
62 parts, built around the ATSAMD21G18A-AU, CH340C, MCP73871EV and AO3407A. 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 Multimeter KiCad files?
From the membaye/multimeter repository on GitHub, at the commit this page was made from: the board is multimeter.kicad_pcb and its schematic mmpower.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Multimeter design in my own project?
Its repository states no licence, so its author keeps all rights: ask membaye before reusing the design.
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