Electronic-Stethescope
About the Electronic-Stethescope PCB
Electronic-Stethescope is an open source PCB design by shreenandansonu, published on GitHub under the MIT license. It is a 2-layer board measuring 85 × 55 mm, with 54 components from 23 distinct parts.
Other key parts include the INA128, NE5532 and TL074. By type, the board carries 24 resistors, 18 capacitors, 6 connectors, 4 ICs, 1 switch and 1 diode.
From the project
EKOBIT is an electronics stethoscope, a AFE signal board for a digital stethoscope.
This project aims at making an affordable yet powerful electronics stethoscope to record and listen to the Heart and Lungs Sound. The stethoscope would be primarily used for teaching purposes for medical students at CMC Vellore, Bagayam Campus, Vellore, Tamil Nadu India. Below mentioned are the objective.
- Software is licensed under the MIT License. - Hardware is licensed under the CERN-OHL-S v2 License.
Main components on the Electronic-Stethescope
Electronic-Stethescope bill of materials (BOM)
54 components, 23 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | INA128 | DIP-8_W7.62mm | U1 |
| 2 | NE5532 | DIP-8_W7.62mm | U2, U3 |
| 1 | TL074 | DIP-14_W7.62mm | U4 |
| 1 | Head Phone | Jack_3.5mm_Ledino_KB3SPRS_Horizontal | J1 |
| 1 | Steth In | Jack_3.5mm_Ledino_KB3SPRS_Horizontal | J3 |
| 1 | Record | Jack_3.5mm_Ledino_KB3SPRS_Horizontal | J4 |
| 1 | PWR | JST_EH_B2B-EH-A_1x02_P2.50mm_Vertical | J5 |
| 1 | Switch | JST_EH_B2B-EH-A_1x02_P2.50mm_Vertical | J6 |
| 1 | POT | PinHeader_1x03_P2.54mm_Vertical | J7 |
| 1 | Op Mode | SW_Slide_SPDT_Angled_CK_OS102011MA1Q | SW1 |
| 1 | LED | LED_D3.0mm_Clear | D1 |
| 2 | 10UF 10uF | CP_Radial_D5.0mm_P2.50mm | C1, C2 |
| 5 | 220PF 220pF | C_Disc_D3.0mm_W2.0mm_P2.50mm | C3, C4, C8, C9, C10 |
| 4 | 100NF 100nF | C_Disc_D3.0mm_W2.0mm_P2.50mm | C5, C6, C7, C12 |
| 1 | 47UF 47uF | CP_Radial_D5.0mm_P2.50mm | C11 |
| 5 | 82PF 82pF | C_Disc_D3.0mm_W2.0mm_P2.50mm | C13, C14, C16, C17, C18 |
| 1 | 47NF 47nF | C_Disc_D3.0mm_W2.0mm_P2.50mm | C15 |
| 4 | 10K | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1, R3, R8, R9 |
| 3 | 1K | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R2, R6, R24 |
| 4 | 100K | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R4, R5, R10, R16 |
Show 3 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 100 | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R7 |
| 10 | 1M | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R11, R12, R13, R14, R17, R18, R19, R20 +2 |
| 2 | 47K | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R15, R22 |
Electronic-Stethescope design files
The KiCad project lives in the shreenandansonu/Electronic-Stethescope repository on GitHub; these links point at the commit this page was built from.
Electronic-Stethescope: common questions
How big is the Electronic-Stethescope PCB?
The Electronic-Stethescope measures 85 × 55 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Electronic-Stethescope?
54 components, from 23 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 Electronic-Stethescope design files?
From the shreenandansonu/Electronic-Stethescope 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 Electronic-Stethescope design in my own project?
Yes, under the terms of its MIT license, which shreenandansonu chose for the repository.