Eavesdrop2
SamyIOoOI·Eavesdrop·Kicad Source Files/eavesdrop Receiver/eavesdrop2.kicad_pcb
About the Eavesdrop2 PCB
Eavesdrop2 is an open source PCB design by SamyIOoOI, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 70 × 50 mm, with 21 components from 18 distinct parts.
Other key parts include the LM386. By type, the board carries 9 capacitors, 4 resistors, 1 IC, 1 connector, 1 speaker and 1 transformer.
From the project
A "current carrier bug" that records the sound inside the area its plugged in and sends it back through the building's AC directly, evading RF detection as awhole.
A "current carrier bug" is a spy tool that records the sound inside the area its plugged in and sends it back through the AC power its connected to directly, evading most detection devices available in the market that rely on RF to detect these devices.
No matter where you are. The bug listens as long as there's electricity flowing in the bugged device.
- Undetectable (via RF Detectors that are commonly used) - Secretive (but requires prior access to the room)

Main components on the Eavesdrop2
Eavesdrop2 bill of materials (BOM)
21 components, 18 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | LM386 | SOIC-8_3.9x4.9mm_P1.27mm | U3 |
| 1 | Conn_01x02_Pin | PinHeader_1x02_P2.54mm_Vertical | J1 |
| 1 | 470pF | C_0603_1608Metric | CY4 |
| 1 | Speaker | PinHeader_1x02_P2.54mm_Vertical | LS1 |
| 1 | HLK-PM01 | Converter_ACDC_Hi-Link_HLK-PMxx | PS1 |
| 1 | ED8_4 | Transformer_ED8_4-Lead_10.5x8mm_P5mm | T1 |
| 1 | 1N4148 | D_DO-35_SOD27_P7.62mm_Horizontal | D1 |
| 1 | 10µH | L_0805_2012Metric | L1 |
| 2 | 100 nF | C_0603_1608Metric | C1, C3 |
| 2 | 100 uF | C_1210_3225Metric | C2, C11 |
| 1 | 220 uF | C_1210_3225Metric | C4 |
| 1 | 160 pF | C_0603_1608Metric | C5 |
| 2 | 0.1 uF | C_0603_1608Metric | C12, C26 |
| 1 | 10 nF | C_0603_1608Metric | C43 |
| 1 | 100 | R_0603_1608Metric | R1 |
| 1 | 4.7K | R_0603_1608Metric | R2 |
| 1 | 10 | R_0603_1608Metric | R4 |
| 1 | VoltageDivider | SOT-23 | RN1 |
Eavesdrop2 design files
The KiCad project lives in the SamyIOoOI/Eavesdrop repository on GitHub; these links point at the commit this page was built from.
Eavesdrop2: common questions
How big is the Eavesdrop2 PCB?
The Eavesdrop2 measures 70 × 50 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Eavesdrop2?
21 components, from 18 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 Eavesdrop2 design files?
From the SamyIOoOI/Eavesdrop repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the Eavesdrop2 design in my own project?
Yes, under the terms of its GPL-3.0 license, which SamyIOoOI chose for the repository.