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FeatherVoltmeterPCBA

oihdesigns·Micro-DMM·PCBDesigns/FeatherVoltmeterPCBA/FeatherVoltmeterPCBA.kicad_pcb

FeatherVoltmeterPCBA PCB layout, top view — open source board by oihdesigns

About the FeatherVoltmeterPCBA PCB

FeatherVoltmeterPCBA is an open source PCB design by oihdesigns, published on GitHub. It is a 4-layer board measuring 23.5 × 51.1 mm, with 28 components from 20 distinct parts.

Other key parts include the ADUM1200AR, ADS1015, LM4040DBZ-2.5 and ISO1540. By type, the board carries 9 resistors, 4 ICs, 4 jumpers, 4 capacitors, 2 connectors and 2 diodes.

It belongs with the test & measurement designs in this gallery.

From the project

A small, open hardware DMM

This is the PCB design and code for a 4.5 digit DMM/ instrumentation module. It is designed and written primairly for Arduino-style development boards.

I've developed this DMM in my work testing and troubleshooting electronics to make my life easier.

I've had Deep-Wiki index my documentation. It did a mostly okay job. You can read its summary here: [](https://deepwiki.com/oihdesigns/Micro-DMM)

FeatherVoltmeterPCBA, from the project README
From the project README

Main components on the FeatherVoltmeterPCBA

ADUM1200ARADS1015LM4040DBZ-2.5ISO1540

FeatherVoltmeterPCBA bill of materials (BOM)

28 components, 20 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
ADUM1200AR
ADuM1200AR
U1
1
ADS1015
U3
1
LM4040DBZ-2.5
U10
1
ISO1540
U13
1
C20917
AO3400A MOSFET
Q8
1
CONN_01X16_PIN
Conn_01x16_Pin
J1
1
SCREW_TERMINAL_01X02
Screw_Terminal_01x02
J5
3
Jumper_2_Small_Open
JP1, JP2, JP3
1
Jumper_2_Small_Bridged
JP4
1
MEE1S0305SC
PS1
1
SSSS811101
SW1
2
C8598
D_Schottky
D4, D5
4
0.1UF
0.1uF
C4, C9, C10, C17
2
4.7K
R1, R2
1
75K
R10
1
1M
R14
2
499.0K
R17, R18
1
15K
R24
1
4.7K
R27
1
R_PACK04_SPLIT
R_Pack04_Split
RN1

FeatherVoltmeterPCBA design files

The KiCad project lives in the oihdesigns/Micro-DMM repository on GitHub; these links point at the commit this page was built from.

FeatherVoltmeterPCBA: common questions

How big is the FeatherVoltmeterPCBA PCB?

The FeatherVoltmeterPCBA measures 23.5 × 51.1 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the FeatherVoltmeterPCBA?

28 components, from 20 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 FeatherVoltmeterPCBA design files?

From the oihdesigns/Micro-DMM 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 FeatherVoltmeterPCBA design in my own project?

The repository has no license, so all rights stay with oihdesigns. Use it as a reference, and ask the author before reusing the design.

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