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DMM Feather Specific

oihdesigns

A small, open hardware DMM

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Main components

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Part NumberDescription
RFM-0505S
ADuM1200ARDual-channel digital isolator, Bidirectional communication, 3V/5V level translation, SOIC-8
ISO1540I2C Isolator, 2.5 kVrms, Bidirectional clock and data, SOIC-8
LM317_TO-2201.5A 35V Adjustable Linear Regulator, TO-220
LM4040DBZ-5
MAX1683IC REG CHARGE PUMP 2VIN SOT23-5
IX4426N
LM4040DBZ-2.52.500V Precision Micropower Shunt Voltage Reference, SOT-23
ADS1115IDGSUltra-Small, Low-Power, I2C-Compatible, 860-SPS, 16-Bit ADCs With Internal Reference, Oscillator, and Programmable Comparator, VSSOP-10

DMM Feather Specific schematic

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DMM Feather Specific board layout

DMM Feather Specific PCB render

Top PCB
Bottom PCB