Pwr key addon
About the Pwr key addon PCB
Pwr key addon is an open source PCB design by LanternD, published on GitHub under the Apache-2.0 license. It is a 2-layer board measuring 11.4 × 10.9 mm, with 6 components from 6 distinct parts.
By type, the board carries 3 connectors, 2 resistors and 1 transistor.
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.
Pwr key addon bill of materials (BOM)
6 components, 6 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | MMBT3904 | SOT-23 | Q1 |
| 1 | MCU_PWR_KEY | PinHeader_1x02_P1.27mm_Vertical | J1 |
| 1 | M_PWR_KEY | PinHeader_1x02_P1.27mm_Vertical | J2 |
| 1 | M_GND | PinHeader_1x02_P1.27mm_Vertical | J3 |
| 1 | 4.7k | R_0805_2012Metric | R1 |
| 1 | 47k | R_0805_2012Metric | R2 |
Pwr key addon 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.
Pwr key addon: common questions
How big is the Pwr key addon PCB?
The Pwr key addon measures 11.4 × 10.9 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Pwr key addon?
6 components, from 6 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 Pwr key addon 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 Pwr key addon 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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