Igur7/AngleCircle1Celem projektu jest integracja elektroniki, zasilania i czujników w jednym module oraz ograniczenie problemów z połączeniami przewodowymi, które występowały na etapie prototypowania.
Kolko 4layer is an open-source printed circuit board by Igur7, from the Igur7/AngleCircle repository on GitHub. It is a 4-layer board of 50 × 50 mm with 85 parts on 91 nets, routed with 1,233 tracks and 389 vias.
It is built around the ESP32-S3-WROOM-1-N8, 74HC4067PW-Q100J and AMS1117-3.3, with the USBLC6-2SC6 and SPH0645LM4H-B among its other parts. Its parts include 31 resistors, 21 diodes, 16 capacitors, 4 ICs and 3 connectors. It belongs with the ESP32 boards of this library.
AngleCircle to projekt okrągłej, czterowarstwowej płytki PCB, opracowywanej w KiCadzie do systemu lokalizacji kierunku źródła dźwięku. System wykorzystuje ESP32-S3 i cztery cyfrowe mikrofony MEMS I²S, rozmieszczone wokół płytki.
Celem projektu jest integracja elektroniki, zasilania i czujników w jednym module oraz ograniczenie problemów z połączeniami przewodowymi, które występowały na etapie prototypowania.
Cztery mikrofony tworzą dwie pary pomiarowe, używane do estymacji opóźnienia nadejścia dźwięku (TDOA):
GÓRA
MIC 1 MIC 2
(lewy górny) (prawy górny)
\ /
\ /
\ /
\ /
\/
/\
/ \
/ \
/ \
/ \
MIC 3 MIC 4
(lewy dolny) (prawy dolny)
DÓŁ
I²S1: MIC 1 + MIC 4
I²S0: MIC 2 + MIC 3Przyjęta w firmware koncepcja pomiaru łączy mikrofony w dwie przekątne. Każda przekątna jest obsługiwana przez oddzielny kontroler I²S, aby zapewnić synchronizację wewnątrz pary pomiarowej.
| Qty | Value | Footprint | References |
|---|---|---|---|
| 19 | LED | LED_SMD:LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D3, D4, D5, D6, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21 +3 |
| 17 | 330 | Resistor_SMD:R_0805_2012Metric | R15, R16, R17, R18, R19, R20, R21, R22, R23, R24, R25, R26, R27, R28, R29, R30 +1 |
| 8 | 51 | Resistor_SMD:R_0805_2012Metric | R7, R8, R9, R10, R11, R12, R13, R14 |
| 5 | 1u | Capacitor_SMD:C_0805_2012Metric | C7, C8, C10, C12, C14 |
| 4 | 10u | Capacitor_SMD:C_0805_2012Metric | C1, C2, C4, C6 |
| 4 | 200p | Capacitor_SMD:C_0805_2012Metric | C9, C11, C13, C15 |
| 4 | 5100 | Resistor_SMD:R_0805_2012Metric | R1, R2, R3, R4 |
| 4 | SPH0645LM4H | Sensor_Audio:Knowles_SPH0645LM4H-6_3.5x2.65mm | MK1, MK2, MK3, MK4 |
| 3 | MountingHole_2.2mm_M2 | MountingHole:MountingHole_2.2mm_M2 | M2, M2, M2 |
| 2 | 100n | Capacitor_SMD:C_0805_2012Metric | C5, C16 |
| 2 | 10k | Resistor_SMD:R_0805_2012Metric | R5, R6 |
| 2 | D_Schottky | Diode_SMD:D_SMB | D1, D2 |
| 1 | 100u | Capacitor_SMD:C_0805_2012Metric | C3 |
| 1 | 74HC4067PW-Q100J | Package_SO:TSSOP-24_4.4x7.8mm_P0.65mm | IC1 |
| 1 | AMS1117-3.3 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U3 |
| 1 | BOOT | Button_Switch_SMD:SW_Push_1P1T-SH_NO_CK_KMR2xxG | SW2 |
| 1 | Conn_01x02_Socket | TerminalBlock:TerminalBlock_MaiXu_MX126-5.0-02P_1x02_P5.00mm | J2 |
| 1 | Conn_01x04_Socket | Connector_Molex:Molex_PicoBlade_53047-0410_1x04_P1.25mm_Vertical | J3 |
| 1 | ESP32-S3-WROOM-1 | muxy:ESP32S3WROOM1UN16R8 | U1 |
| 1 | RST | Button_Switch_SMD:SW_Push_1P1T-SH_NO_CK_KMR2xxG | SW1 |
| 1 | USBLC6-2SC6 | Package_TO_SOT_SMD:SOT-23-6 | U2 |
| 1 | USB_C_Receptacle_USB2.0_16P | Connector_USB:USB_C_Receptacle_GCT_USB4105-xx-A_16P_TopMnt_Horizontal | J1 |
The 84 most common of 85 parts.
It measures 50 × 50 mm and has 4 copper layers, 1.6 mm thick.
85 parts, built around the ESP32-S3-WROOM-1-N8, 74HC4067PW-Q100J, AMS1117-3.3 and USBLC6-2SC6. 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.
From the Igur7/AngleCircle repository on GitHub, at the commit this page was made from: the board is PCB/kolko_4layer.kicad_pcb and its schematic PCB/kolko_4layer.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Its repository states no licence, so its author keeps all rights: ask Igur7 before reusing the design.
aayu0-0/Iris-Intern
The project was executed in a team-based environment (5 members) with a strong focus on real-world system design practices, including modular architecture, hardware–software co-design, and scalable development.
solderneer/nexus-silent-speech
A novel approach to enhancing silent speech recognition systems with a multiplexed star electrode array, developed for my final year dissertation at University College London (UCL).
punkfab/pcb-corpus
235 real KiCad boards from open-source hardware repositories, prepared as a placement and routing benchmark
romioRN/Dash6.8-hardware
wifi name "service", password 12345678, connect to 192.167.4.1
dulerabbit/GaggiBre-legacy
This is GaggiBre! a fork of Gaggimate with Manual Brew Control and Adaptive Mode. Made by Dule Rabbit
mornepousse/Niphargus
Niphargus — a slim, indestructible wireless split keyboard. ESP32 + nRF24, wired fallback, and an emergency kit hidden behind the USB port. The successor to the Rouge-Gorge.
ODARI-CHARLES1/iot_device_pcb
Hardware design for a air conditioner pcb design using Kicad software. This is for learning purpose only not manufacturable.