2 layers68 × 110 mm
2 layers68 × 110 mm
Multimeter
schuyler4/Multimeter3My multimeter design.
- Size
- 68 × 110 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 99
- Nets
- 118
- Pads
- 349
- Tracks, vias
- 934, 172
- Pours
- 3
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 14 Feb 2024
- Updated
- 8 May 2026
Overview
Multimeter is an open-source printed circuit board by schuyler4, from the schuyler4/Multimeter repository on GitHub, published under the MIT licence. It is a 2-layer board of 68 × 110 mm with 99 parts on 118 nets, routed with 934 tracks and 172 vias.
It is built around the SC0915, MCP3561-E/NC and CC56-12SURKWA, with the OPA4388IDR-TP, BSS84 and LTST-C170KRKT among its other parts. Its parts include 50 resistors, 24 transistors, 5 ICs, 4 diodes and 3 capacitors. It belongs with the sensors and measurement boards of this library.
Main components
9
SC0915
Raspberry Pi Pico SMD module (including test points).Raspberry PiUncategorised
MCP3561-E/NC
QFN-20-EP(3x3)-40℃~+125℃ 1 107.2dB 153.6kHz 153.6kHz 1MHz~20MHz、3.3MHz~6.6MHz 2.7V~3.6V 24 500ppb/℃ Built-in External External、Built-in SPI Sigma-Delta Support Yes QFN-20-EP(3x3) Analog to Digital Converters (ADC) ROHSMicrochip TechnologyAnalog To Digital Converters (ADC)
CC56-12SURKWA
DIP-12-40℃~+85℃ 0.56 1.85V 4 7 Segment 72mcd 75mW Common Cathode Red DIP-12 LED Segment Displays ROHSKingbrightLED Segment Displays
OPA4388IDR-TP
SOP-14SOP-14 Precision Op Amps ROHSTECH PUBLICPrecision Op Amps
BSS84
SOT-23-55℃~+150℃ 1 P-Channel 130mA 2.8pF 24.6pF 2V 3.2Ω@5V 300mW 4.7pF 50V 590pC@10V SOT-23 MOSFETs ROHSDiodes IncorporatedMOSFETs
LTST-C170KRKT
0805-55℃~+85℃ 130° 20mA 2V 54mcd 631nm 639nm 75mW Discrete Diode Red Water Clear 0805 LED Indication - Discrete ROHSLite-OnLED Indication - DiscreteGF-123-0054
插件Plugin Slide Switches ROHSCW INDUSTRIESSlide Switches
GF-126-0159
插件-10℃~+104℃ 125V 8.5A Black DPDT PC Pin Rectangular Columnar Through Hole Plugin Slide Switches ROHSCW INDUSTRIESSlide SwitchesGF-161-0005
插件12.57mm 125V 14.4mm 16.36mm 3.61mm 3PDT PC Pin Rectangular Columnar Through Hole Plugin Slide Switches ROHSCW INDUSTRIESSlide Switches
README
readme.mdMultimeter
This is my homebrew multimeter. It differs from standard multimeters in several respects.
- Only the most used modes are actually included: VDC, Ohms, Capacitance
- Powered by a USB cable, no changing batteries.
- Generally a different user interface because of 1 and 2.
Calibration
Calibration is relative to my Fluke 101 Multimeter. I know that there is probably some technical problems with this, as the Fluke 101 does not have more digits than this meter, nor is it substantially more accurate in voltage mode. However, I don't have a really nice bench top meter, so it will have to do.
Specs
- Input Resistance: 521kΩ
- Range
- Voltage: +/-60V
- Resistance Range 1: 30Ω - 1.2kΩ
- Resistance Range 2: 1.2kΩ - 500kΩ
- Capacitance: 50nF - 47uF
-
Relative Accuracy
- Voltage: 0.5%
- Resistance: 10%
- Capacitance: 5%
Parts
99| Qty | Value | Footprint | References |
|---|---|---|---|
| 16 | 1k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R9, R10, R11, R12, R32, R33, R34, R35, R45, R46, R47, R48, R49, R50, R51, R52 |
| 16 | 2N7002 | Package_TO_SOT_SMD:SOT-23 | Q1, Q2, Q3, Q4, Q12, Q14, Q15, Q16, Q17, Q18, Q19, Q20, Q21, Q22, Q23, Q24 |
| 14 | 649 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R5, R13, R14, R15, R16, R17, R18, R19, R20, R28, R29, R30, R31, R38 |
| 13 | 10k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1, R2, R4, R6, R22, R23, R24, R25, R26, R27, R42, R43, R44 |
| 8 | BSS84 | Package_TO_SOT_SMD:SOT-23 | Q5, Q6, Q7, Q8, Q9, Q10, Q11, Q13 |
| 4 | LTST-C170KRKT | LED_SMD:LED_0805_2012Metric | D1, D2, D3, D4 |
| 4 | M3 | MountingHole:MountingHole_2.7mm_Pad_Via | H1, H2, H3, H4 |
| 3 | 0.1uF | Capacitor_SMD:C_0805_2012Metric | C4, C5, C6 |
| 3 | 10k+/-0.1% | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R39, R40, R41 |
| 3 | Pad | TestPoint:TestPoint_THTPad_1.5x1.5mm_Drill0.7mm | TP1, TP2, TP3 |
| 1 | 1.62k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R36 |
| 1 | 100k+/-0.1% | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R21 |
| 1 | 10k | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | R3 |
| 1 | 4952 | Connector_Pin:Pin_D1.2mm_L10.2mm_W2.9mm_FlatFork | TP4 |
| 1 | 511k+/-0.1% | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R37 |
| 1 | Black Banana Plug | Multimeter:KEYSTONE_575-4 | J4 |
| 1 | CC56-12SURKWA | Display_7Segment:CA56-12SURKWA | U4 |
| 1 | GF-123-0054 | Multimeter:SW_GF-123-0054 | SW1 |
| 1 | GF-126-0159 | Multimeter:SW_GF-126-0159 | SW2 |
| 1 | GF-161-0005 | Multimeter:GF-161-0005 | SW3 |
| 1 | LM4030-2.5 | Package_TO_SOT_SMD:SOT-23-5 | U7 |
| 1 | MCP3561 | Package_SO:SSOP-20_4.4x6.5mm_P0.65mm | U10 |
| 1 | OPA4388IDR | Package_SO:SOIC-14_3.9x8.7mm_P1.27mm | U3 |
| 1 | Red Banana Plug | Multimeter:KEYSTONE_575-4 | J3 |
| 1 | SC0915 | Multimeter:MODULE_SC0915 | U1 |
Questions
How big is the Multimeter PCB?
It measures 68 × 110 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Multimeter use?
99 parts, built around the SC0915, MCP3561-E/NC, CC56-12SURKWA and OPA4388IDR-TP. 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 schuyler4/Multimeter repository on GitHub, at the commit this page was made from: the board is electronics/rev2/ecad/Multimeter.kicad_pcb and its schematic electronics/rev1/ecad/Multimeter.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 publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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