2 layers
Nrf bga
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12 parts14kMIT
2 layers60.7 × 43.3 mm
Sd emf
arnav-kr/sd_emf1A simple EMF detector built using discrete components
- Size
- 60.7 × 43.3 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 12
- Nets
- 12
- Pads
- 32
- Tracks, vias
- 76, 1
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 26 Jun 2025
- Updated
- 29 Jun 2025
Overview
Sd emf is an open-source printed circuit board by arnav-kr, from the arnav-kr/sd_emf repository on GitHub, published under the AGPL-3.0 licence. It is a 2-layer board of 60.7 × 43.3 mm with 12 parts on 12 nets, routed with 76 tracks and 1 via.
Its parts include 4 transistors, 2 resistors, 1 diode, 1 connector and 1 switch.
README
README.mdSD EMF
A simple EMF detector built using discrete components with a SD Card shaped PCB.
Schematic
PCB
BOM
| Part | Quantity |
|---|---|
| Battery Holder | 1 |
| LED | 1 |
| 2N3904 Transistor | 3 |
| Resistor 220 Ohm | 1 |
| Resistor 4.7k Ohm | 1 |
| Potentiometer | 2 |
| Push Button | 1 |
License
This project is licensed under the AGPL-3.0 License.
Author
Made by Arnav Kumar | Slack (@ak)
Parts
12| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | 2N3904 | Package_TO_SOT_THT:TO-92_HandSolder | Q1, Q2, Q3, Q4 |
| 2 | R_Potentiometer | Potentiometer_THT:Potentiometer_Vishay_T73YP_Vertical | RV1, RV2 |
| 1 | 220 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R4 |
| 1 | 4.7K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R3 |
| 1 | Battery_Cell | Battery:BatteryHolder_Keystone_3034_1x20mm | BT1 |
| 1 | Conn_01x01_Pin | Connector_PinHeader_2.54mm:PinHeader_1x01_P2.54mm_Vertical | J1 |
| 1 | LED | LED_THT:LED_D5.0mm | D1 |
| 1 | SW_Push | Button_Switch_THT:SW_PUSH_6mm | SW1 |
Questions
How big is the Sd emf PCB?
It measures 60.7 × 43.3 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Sd emf use?
12 parts. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Sd emf KiCad files?
From the arnav-kr/sd_emf repository on GitHub, at the commit this page was made from: the board is src/sd_emf.kicad_pcb and its schematic src/sd_emf.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Sd emf design in my own project?
Its repository publishes it under the AGPL-3.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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