Current calibration board
About the Current calibration board
Current calibration board is an open source PCB design by LanternD, published on GitHub under the Apache-2.0 license. It is a 2-layer board measuring 40 × 40 mm, with 14 components from 13 distinct parts.
By type, the board carries 8 resistors and 6 connectors.
It belongs with the iot & wireless, sensors and test & measurement designs in this gallery.
From the project
Hardware and software design for NB-Scope.
Auxilliary boards are used to extend the capability of the mainboard and shieldboard, as well as to calibrate the current sensors.
Since the 0.1 Ohm current sensing resistors are different, the current sensing should be calibrated as per mainboard.
You need a series of resistors for this board. The actual resistance does not matter. We just compare the sensor reading with the digital multimeter or power monitor reading.
Current calibration board bill of materials (BOM)
14 components, 13 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | Vcc_Conn | PinHeader_1x03_P1.27mm_Vertical | J1, J2 |
| 1 | GND_Conn | PinHeader_1x04_P1.27mm_Vertical | J3 |
| 1 | Vcc_Conn | PinHeader_1x03_P2.54mm_Vertical | J4 |
| 1 | Conn_01x08 | PinHeader_1x08_P2.54mm_Vertical | J5 |
| 1 | GND_Conn | PinHeader_1x03_P2.54mm_Vertical | J6 |
| 1 | 165 | R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R1 |
| 1 | 68 | R_1206_3216Metric_Pad1.42x1.75mm_HandSolder | R2 |
| 1 | 33 | R_1210_3225Metric_Pad1.42x2.65mm_HandSolder | R3 |
| 1 | 22 | R_1210_3225Metric_Pad1.42x2.65mm_HandSolder | R4 |
| 1 | 16.5 | R_2512_6332Metric_Pad1.52x3.35mm_HandSolder | R5 |
| 1 | 13.3 | R_2512_6332Metric_Pad1.52x3.35mm_HandSolder | R6 |
| 1 | 11 | R_2512_6332Metric_Pad1.52x3.35mm_HandSolder | R7 |
| 1 | 5.6 | Resistor_SMD_1225_2W | R8 |
Current calibration board design files
The KiCad project lives in the LanternD/NB-Scope repository on GitHub; these links point at the commit this page was built from.
Current calibration board: common questions
How big is the Current calibration board?
The Current calibration board measures 40 × 40 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Current calibration board?
14 components, from 13 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 Current calibration board design files?
From the LanternD/NB-Scope repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.
Can I use the Current calibration board design in my own project?
Yes, under the terms of its Apache-2.0 license, which LanternD chose for the repository.
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