Amplified Shunt II for mA, µA and nA Current Measurements

thingiverse

Device measures small currents accurately. Inspired by opensourced 'µCurrent' from David L. Jones, available at eevblog.com/projects/ucurrent/. Advanced SMD soldering skills are necessary to assemble this project successfully. Important tips: Solder switches in correct orientation as shown in video. Capacitors C3, C4, and C5 are not populated on the PCB. Verify current flows through shunt from positive to negative polarity. Measure on load's low side by placing shunt between load and ground. Use tool with low voltage, current-limited power supply for safe operation. Begin with 1mV/1mA setting then decrease until signal starts to get cut off. Required parts: Printed Circuit Board (upload .zip file to preferred manufacturer). Parts listed in 'Partlist_ampl_shunt_II.csv' file. Flexible wire for connecting batteries to VGND as shown in video. Video demonstrates operation and assembly at youtu.be/QXCb8_EW-eA.