Micro amps
About the Micro amps PCB
Micro amps is an open source PCB design by AlmCoding, published on GitHub under the CERN-OHL-S-2.0 license. It is a 2-layer board measuring 60.7 × 39.1 mm, with 18 components from 14 distinct parts.
Other key parts include the OPA197xDBV. By type, the board carries 7 resistors, 5 connectors, 2 battery holders, 2 capacitors, 1 IC and 1 switch.
It belongs with the test & measurement designs in this gallery.
From the project
Current to voltage converter PCB for measuring small currents
µAmps is an open-hardware current-to-voltage converter designed as a practical, low-cost alternative to the µCurrent GOLD. It allows precise conversion of extremely small currents into a measurable voltage across three optimized ranges, making it ideal for low-power electronics and embedded device development.
With its analog voltage output, µAmps can be easily connected to a multimeter, oscilloscope, or data acquisition system, enabling engineers and makers to debug and verify power consumption down to the nanoamp level.
Main components on the Micro amps
Micro amps bill of materials (BOM)
18 components, 14 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | OPA197xDBV | SOT-23-5_HandSoldering | U1 |
| 4 | Conn_01x01_Socket | Banana_Jack_1Pin | J1, J3, J4, J5 |
| 1 | Conn_02x04_Odd_Even | PinHeader_2x04_P2.54mm_Vertical | J2 |
| 2 | A23 | A23_Battery_Holder_Keystone_82 | BT1, BT2 |
| 1 | SW_Slide_DPDT | SW_DPDT_SLW_913535 | SW1 |
| 1 | 1uF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C1 |
| 1 | 10p | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C2 |
| 1 | 270 | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R1 |
| 1 | 56k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R2 |
| 1 | 43k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R3 |
| 1 | 10k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R4 |
| 1 | 100 | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R5 |
| 1 | 1 | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R6 |
| 1 | 1k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R7 |
Micro amps design files
The KiCad project lives in the AlmCoding/micro-amps repository on GitHub; these links point at the commit this page was built from.
- Layoutmicro-amps.kicad_pcb
- Schematicmicro-amps.kicad_sch
Micro amps: common questions
How big is the Micro amps PCB?
The Micro amps measures 60.7 × 39.1 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Micro amps?
18 components, from 14 distinct parts. The full bill of materials is listed on this page.
Where can I download the Micro amps design files?
From the AlmCoding/micro-amps repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Micro amps design in my own project?
Yes, under the terms of its CERN-OHL-S-2.0 license, which AlmCoding chose for the repository.
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