2 layers83 × 39 mm
MicArray
dylanzodrow/Aerial_Drone_Tracking
Hopefully, the final pcb designs. In this iteration the microphones are on breakout boards and the traces are enlarged to ensure proper insulation when manufactured.
87 parts3
2 layers140 × 88.6 mm
Highway wave
rrrenai/waveThese headphones utilize an FPGA, I2S MEMS microphones, and scrap headphone drivers. The FPGA and RPI work in tandem to collect and process incoming signals real time, seamlessly upgrading the listening experience.
- Size
- 140 × 88.6 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 43
- Nets
- 70
- Pads
- 202
- Tracks, vias
- 380, 45
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 23 May 2025
- Updated
- 6 Jan 2026
Overview
Highway wave is an open-source printed circuit board by rrrenai, from the rrrenai/wave repository on GitHub, published under the MIT licence. It is a 2-layer board of 140 × 88.6 mm with 43 parts on 70 nets, routed with 380 tracks and 45 vias.
It is built around the ICS-52000. Its parts include 25 connectors, 8 capacitors and 2 resistors. It belongs with the audio and music boards of this library.
Main components
1README
README.md~ wave ~
wave is an attempt to revolutionize the head phone listening experience. If you know me irl, you'll know that I easily lose focus when people talk to me and I proactively believe I am going deaf. wave attempts to fix this issue by serving a a directional source selector for incoming sounds, eliminating distractions from environmental noise.
These headphones utilize an FPGA, I2S MEMS microphones, and scrap headphone drivers. The FPGA and RPI work in tandem to collect and process incoming signals real time, seamlessly upgrading the listening experience.
The headphones have 2 half PCBs, which are connected via 3 JST cables. It collects audio data through 8 ICS-520000 MEMS microphones, connected together via TDM and parsed directly on the FPGA. The data is then quickly ran through a reduced TF-Gridnet DNN, where the target speaker is isolated and played back to the user.
Schematic
BOM
| Item | Price | Quantity | Subtotal |
|---|---|---|---|
| Ear cup / case | $ 10.00 | 1 | $ 10.00 |
| Head band | $ 10.00 | 1 | $ 10.00 |
| Bluetooth | $ 1.79 | 1 | $ 1.79 |
| Aliexpress shipping | $ 6.63 | 1 | $ 6.63 |
| Aliexpress tax | $ 4.42 | 1 | $ 4.42 |
| Cushion / seal material | $ 5.26 | 2 | $ 10.52 |
| LiPo | $ 4.95 | 2 | $ 9.90 |
| Sound amp | $ 1.26 | 1 | $ 1.26 |
| Charge Protection IC | $ 1.99 | 1 | $ 1.99 |
| Tang Nano 9k | $ 18.17 | 1 | $ 18.17 |
| Amazon Shipping / Handling | $ 12.98 | 1 | $ 12.98 |
| Amazon Estimated Tax | $ 9.11 | 1 | $ 9.11 |
| Audio driver for headphones | $ 10.69 | 2 | $ 21.38 |
| Digikey Shipping | $ 6.99 | 1 | $ 6.99 |
| Digikey Tarriff | $ 2.14 | 1 | $ 2.14 |
| Ebay shipping | $ 4.95 | 1 | $ 4.95 |
| Ebay tax | $ 0.64 | 1 | $ 0.64 |
| Buttons | $ 5.00 | 4 | $ 20.00 |
| LED | $ - | 2 | $ - |
| PCB (L + R) | $ 8.27 | 1 | $ 8.27 |
| I2S Microphones | $ 2.84 | 10 | $ 28.40 |
| Mouser shipping | $ 7.99 | 1 | $ 7.99 |
| TOTAL | $ 197.53 |
Parts
43| Qty | Value | Footprint | References |
|---|---|---|---|
| 16 | Conn_01x02_Socket | Connector_JST:JST_PH_B2B-PH-K_1x02_P2.00mm_Vertical | J3, J5, J7, J9, J11, J12, J14, J15, J16, J17, J18, J19, J22, J23, J24, J25 |
| 8 | 1 uF | Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P5.00mm | C1, C2, C3, C4, C5, C6, C7, C8 |
| 8 | ICS-52000 | wave:MIC_ICS-52000 | MK1, MK2, MK3, MK4, MK5, MK6, MK7, MK8 |
| 4 | Conn_01x02_Pin | Connector_JST:JST_PH_B2B-PH-K_1x02_P2.00mm_Vertical | J4, J6, J8, J10 |
| 3 | Screw_Terminal_01x02 | TerminalBlock_MetzConnect:TerminalBlock_MetzConnect_Type101_RT01602HBWC_1x02_P5.08mm_Horizontal | J13, J20, J21 |
| 2 | 100 k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1, R2 |
| 2 | Conn_01x24 | Connector_PinSocket_2.54mm:PinSocket_1x24_P2.54mm_Vertical | J1, J2 |
Questions
How big is the Highway wave PCB?
It measures 140 × 88.6 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Highway wave use?
43 parts, built around the ICS-52000. 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 Highway wave KiCad files?
From the rrrenai/wave repository on GitHub, at the commit this page was made from: the board is project_files/highway_wave/highway_wave.kicad_pcb and its schematic project_files/highway_wave/highway_wave.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Highway wave design in my own project?
Its repository publishes it under the MIT 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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