Speaker
About the Speaker PCB
Speaker is an open source PCB design by lufixSch, published on GitHub. It is a 4-layer board measuring 55.4 × 64 mm, with 60 components from 24 distinct parts.
Other key parts include the LTC2640-Z and LM2735XMF. By type, the board carries 19 modules, 15 capacitors, 9 resistors, 7 connectors, 3 test points and 2 ICs.
It belongs with the audio designs in this gallery.
From the project
Bachelor Thesis at the FH-Joanneum about building a speaker creating a sound beam
This repository contains the source code, 3D Models, Circuit/PCB designs and documentation of the Sound Laser bachelor thesis at the FH JOANNEUM.
The LaTex documentation is located in docs/build/SoundLaser_Thesis.pdf
Parametric speakers are able to transmit audible sound with a beamforming effect using ultrasonic transducers. This work will describe the development of such a speaker as well as the software necessary to operate it.
Main components on the Speaker
Speaker bill of materials (BOM)
60 components, 24 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | LTC2640-Z | SOT-23-8_Handsoldering | U1 |
| 1 | LM2735XMF | SOT-23-5_HandSoldering | U2 |
| 19 | Ultrasonic_Transducer | CUSP-T80-15-2400-TH | M1, M2, M3, M4, M5, M6, M7, M8 +11 |
| 1 | BC847 | SOT-23 | Q1 |
| 1 | BC857 | SOT-23 | Q2 |
| 6 | CONN_01X03 Conn_01x03 | SPI_Conn_SMD | J1, J2, J3, J4, J5, J6 |
| 1 | CONN_01X02 Conn_01x02 | PinHeader_1x02_P2.54mm_Vertical_SMD_Pin1Left | J7 |
| 1 | ADA4622-1 | SOT-23-5_HandSoldering | OP1 |
| 3 | TestPoint | TestPoint_Keystone_5000-5004_Miniature | TP1, TP2, TP3 |
| 1 | SSB44 | D_SMB_Handsoldering | D1 |
| 1 | 10UH 10uH | L_Wuerth_5030_Handsolder | L1 |
| 1 | 22UF 22uF | C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C1 |
| 4 | 10UF 10uF | C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C2, C3, C5, C14 |
| 4 | 100NF 100nF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C4, C6, C11, C15 |
| 1 | 470PF 470pF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C7 |
| 1 | 1.5NF 1.5nF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C8 |
| 1 | 10NF 10nF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C9 |
| 1 | 1UF 1uF | C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C10 |
| 2 | 1NF 1nF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C12, C13 |
| 1 | 180K 180k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1 |
Show 4 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 10K 10k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R2 |
| 1 | 15K 15k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R3 |
| 1 | 5k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R4 |
| 5 | 100K 100k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R7, R8, R9, R10, R11 |
Speaker design files
The KiCad project lives in the lufixSch/sound-laser repository on GitHub; these links point at the commit this page was built from.
Speaker: common questions
How big is the Speaker PCB?
The Speaker measures 55.4 × 64 mm, has 4 copper layers and is 4.69 mm thick.
How many components are on the Speaker?
60 components, from 24 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 Speaker design files?
From the lufixSch/sound-laser 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 Speaker design in my own project?
The repository has no license, so all rights stay with lufixSch. Use it as a reference, and ask the author before reusing the design.
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