ClearBell V0.2
About the ClearBell V0.2 PCB
ClearBell V0.2 is an open source ESP32 PCB design by akoerner-dev, published on GitHub under the MIT license. It is a 4-layer board measuring 110 × 60 mm, with 57 components from 38 distinct parts.
Its main chip is the ESP32-S3-WROOM-1-N16R8, from the ESP32 family. Other key parts include the LMR33630CDDAR, MAX98357AETE+T and IM72D128V01. By type, the board carries 4 ICs, 2 transistors, 1 fuse, 1 LED, 1 diode and 1 inductor.
It belongs with the audio, iot & wireless and dev boards & breakouts designs in this gallery.
From the project
Selbst entwickeltes ESP32-Klingelsystem fuer ein Zweifamilienhaus - KiCad-Hardware und Arduino-Firmware (WLAN/UDP, HMAC-gesichert).
Selbst entwickeltes Türklingelsystem für ein Zweifamilienhaus — vollständig eigenentwickelt von der Schaltung über das PCB-Layout bis zur Firmware. Das Projekt dokumentiert nicht nur was gebaut wurde, sondern die begründeten Technikentscheidungen dahinter.
Aktuelle Generation: V0.2 — Redesign auf den ESP32-S3. Beide Platinen sind fertig verlegt, geprüft und werden bei PCBWay gefertigt und bestückt. Die erste Generation läuft im Haus und liegt im Archiv.
Main components on the ClearBell V0.2
ClearBell V0.2 bill of materials (BOM)
57 components, 38 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | LMR33630CDDAR Texas Instruments | DDA0008J | U1 |
| 1 | ESP32-S3-WROOM-1-N16R8 Espressif | ESP32-S3-WROOM-1 | U2 |
| 1 | MAX98357AETE+T Analog Devices | QFN50P300X300X80-17N | U3 |
| 1 | IM72D128V01 Infineon | IFX-PG-LLGA-5-4 | U4 |
| 1 | PJA3415AE-AU PANJIT | SOT-23 | Q1 |
| 1 | IRLML6344TRPBF Infineon | SOT-23 | Q2 |
| 1 | 100u | CP_Elec_6.3x5.4 | C_Bulk1 |
| 1 | 1u | C_0603_1608Metric | C_EN1 |
| 4 | 100n | C_0603_1608Metric | C_ESD_USB1, C_HF1, C_MIC1, C_VDD_AMP2 |
| 1 | 22u | C_0805_2012Metric | C_MOD1 |
| 1 | 10u | C_0805_2012Metric | C_VDD_AMP1 |
| 2 | GCM188R71C104KA37D 100n Murata | C_0603_1608Metric | Cboot1, CoutX1 |
| 1 | DNP | C_0603_1608Metric | Cff1 |
| 4 | GRM21BZ71E106KE15L 10u Murata | C_0805_2012Metric | Cin1, Cin2, Cin3, Cin4 |
| 1 | GRM188R71E224KA88D 220n Murata | C_0603_1608Metric | CinX1 |
| 2 | GRM21BZ71A226ME15L 22u Murata | C_0805_2012Metric | Cout1, Cout2 |
| 1 | 885012206076 1u Würth Elektronik | C_0603_1608Metric | Cvcc1 |
| 1 | BZX84-C6V2 Nexperia | SOT-23 | DZ1 |
| 2 | ESD9L5.0ST5G | D_SOD-923 | D_ESD_TCH1, D_ESD_TCH2 |
| 1 | USBLC6-4SC6 | SOT-23-6 | D_ESD_USB1 |
Show 18 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | S1A | D_SMA | D_FLY1 |
| 1 | PMEG3010ER | Nexperia_CFP3_SOD-123W | D_ORING1 |
| 1 | 1812L150/24MR Littelfuse | Fuse_1812_4532Metric | F1 |
| 1 | 2060-452/998-404 | WAGO_2060-452_998-404 | J_DOOR1 |
| 1 | 2060-452/998-404 WAGO | WAGO_2060-452_998-404 | J_PWR1 |
| 1 | USB4105-GF-A-120 | USB_C_Receptacle_GCT_USB4105-xx-A_16P_TopMnt_Horizontal | J_USB_SVC1 |
| 2 | 10k | R_0603_1608Metric | R_BOOT1, R_EN1 |
| 2 | 5k1 | R_0603_1608Metric | R_CC1, R_CC2 |
| 2 | 100 | R_0603_1608Metric | R_GATE1, R_MIC_DATA1 |
| 2 | 100k | R_0603_1608Metric | R_GATE_PD1, R_SDMODE1 |
| 2 | 750R | R_0603_1608Metric | R_LED_G1, R_LED_R1 |
| 3 | 1k | R_0603_1608Metric | R_TOUCH_EG1, R_TOUCH_OG1, R_VBUS_PD1 |
| 1 | RC0603FR-0743K2L 43k2 Yageo | R_0603_1608Metric | Rfbb1 |
| 3 | RC0603FR-07100KL 100k Yageo | R_0603_1608Metric | Rfbt1, Rg1, Rpg1 |
| 2 | EVP-BD6C1A000 | EVP-BD6C1A000 | S_BOOT1, S_RST1 |
| 1 | APHBM2012LSURKCGKC Kingbright | LED_Kingbright_APHBM2012_2x1.25mm | LED1 |
| 1 | SMBJ15A-E3/52 SMBJ15A Vishay | D_SMB | D1 |
| 1 | 74438356018HT 1.8u Wurth Elektronik | L_Wurth_WE-MAPI-4020HT | L1 |
ClearBell V0.2 design files
The KiCad project lives in the akoerner-dev/ClearBell repository on GitHub; these links point at the commit this page was built from.
ClearBell V0.2: common questions
What microcontroller does the ClearBell V0.2 use?
The ClearBell V0.2 is built around the ESP32-S3-WROOM-1-N16R8, from the ESP32 family.
How big is the ClearBell V0.2 PCB?
The ClearBell V0.2 measures 110 × 60 mm, has 4 copper layers and is 1.561 mm thick.
How many components are on the ClearBell V0.2?
57 components, from 38 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 ClearBell V0.2 design files?
From the akoerner-dev/ClearBell 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 ClearBell V0.2 design in my own project?
Yes, under the terms of its MIT license, which akoerner-dev chose for the repository.
Can I test firmware for the ClearBell V0.2 without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug ESP32 firmware against it before you order a PCB.
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