brodenn/multimeterThis is my school project where I designed, built, and programmed a fully functional digital multimeter using an Arduino Uno and a custom PCB designed in KiCad.
Multimeter is an open-source printed circuit board by brodenn, from the brodenn/multimeter repository on GitHub. It is a 2-layer board of 100.2 × 64.3 mm with 46 parts on 62 nets, routed with 605 tracks and 0 vias.
It is built around the CD74HCT4511E, 4606X-101-103LF and BH9VPC, with the CK1050 and LDT-N2804RI among its other parts. Its parts include 19 resistors, 6 diodes, 6 connectors, 3 switches and 1 IC. It belongs with the sensors and measurement boards of this library.
This is my school project where I designed, built, and programmed a fully functional digital multimeter using an Arduino Uno and a custom PCB designed in KiCad.
📄 Click here to read the full report (PDF)
🟢 Voltage Measurement
🟠 Resistance Measurement
🔋 Battery Monitoring
🎛️ Rotary Switch Mode Selection
🔊 Visual & Audio Feedback
🔢 3-Digit 7-Segment Display
| Qty | Value | Footprint | References |
|---|---|---|---|
| 13 | 220 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R7, R8, R9, R10, R11, R12, R13, R14, R15, R16, R17, R18, R19 |
| 4 | LED | LED_THT:LED_D5.0mm | D3, D4, D5, D6 |
| 4 | MountingHole_3.2mm | Arduino_MountingHole:MountingHole_3.2mm | MH1, MH2, MH3, MH4 |
| 3 | Conn_01x01 | Connector:Banana_Jack_1Pin | Banana_GND1, Banana_High1, Banana_Low1 |
| 2 | 10k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R2, R6 |
| 2 | SW_SPDT | Button_Switch_THT:SW_Slide-03_Wuerth-WS-SLTV_10x2.5x6.4_P2.54mm | SW1, SW2 |
| 1 | 100 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R3 |
| 1 | 100k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R5 |
| 1 | 4606X-101-103LF | 4606X:4606X102103LF | RN1 |
| 1 | 6.8k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R4 |
| 1 | 70k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R1 |
| 1 | Analog | Connector_PinSocket_2.54mm:PinSocket_1x06_P2.54mm_Vertical | J3 |
| 1 | BH9VPC | BH9VPC:BAT_BH9VPC | BT2 |
| 1 | Barrel_Jack_Switch | Connector_BarrelJack:BarrelJack_Horizontal | J5 |
| 1 | Buzzer | Buzzer_Beeper:Buzzer_12x9.5RM7.6 | BZ1 |
| 1 | CD74HCT4511E | CD74HCT4511E:DIP794W53P254L1930H508Q16N | IC1 |
| 1 | CK1050 | CK1050:SW_CK1050 | S1 |
| 1 | Digital/PWM | Connector_PinSocket_2.54mm:PinSocket_1x08_P2.54mm_Vertical | J4 |
| 1 | Digital/PWM | Connector_PinSocket_2.54mm:PinSocket_1x10_P2.54mm_Vertical | J2 |
| 1 | LDT-N2804RI | N2804RI:DIPS762W45P254L2253H610Q12N | DS1 |
| 1 | Power | Connector_PinSocket_2.54mm:PinSocket_1x08_P2.54mm_Vertical | J1 |
| 1 | Red_LED | LED_THT:LED_D5.0mm | D1 |
| 1 | Terminal_01x02 | p2lib:terminal_battery | J6 |
| 1 | Yellow_Led | LED_THT:LED_D5.0mm | D2 |
It measures 100.2 × 64.3 mm and has 2 copper layers, 1.6 mm thick.
46 parts, built around the CD74HCT4511E, 4606X-101-103LF, BH9VPC and CK1050. 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.
From the brodenn/multimeter repository on GitHub, at the commit this page was made from: the board is kicad/p2.kicad_pcb and its schematic kicad/p2.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Its repository states no licence, so its author keeps all rights: ask brodenn before reusing the design.
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