4 layers67 × 25.8 mm
4 layers67 × 25.8 mm
WiTooth v1P1
automote/WiToothWiTooth- BLE to Wi-Fi GW based on ESP32 SoC
- Size
- 67 × 25.8 mm
- Copper layers
- 4
- Thickness
- 2 mm
- Parts
- 76
- Nets
- 54
- Pads
- 240
- Tracks, vias
- 519, 51
- Pours
- 11
- Routed
- Yes
- KiCad
- KiCad 4
- Created
- 7 Dec 2016
- Updated
- 24 Mar 2017
Overview
WiTooth v1P1 is an open-source printed circuit board by automote, from the automote/WiTooth repository on GitHub, published under the GPL-3.0 licence. It is a 4-layer board of 67 × 25.8 mm with 76 parts on 54 nets, routed with 519 tracks and 51 vias.
It is built around the CP2102 and MMBT3904. Its parts include 16 resistors, 14 capacitors, 5 diodes, 3 ICs and 3 connectors. It belongs with the radio and wireless and interfaces and adapters boards and the ESP32 boards of this library.
Main components
2README
README.mdWiTooth
The WiTooth is based on Espressif ESP32 WiFi-BT-BLE SoC (System on Chip), ESP32 contains two low-power Xtensa® 32-bit LX6 microprocessors running at 80 MHz. Features include:
- Integrated 802.11 BGN WiFi transceiver
- Integrated dual-mode Bluetooth (classic and BLE)
- Dual-core Tensilica LX6 microprocessor
- Up to 240MHz clock frequency
- 520kB internal SRAM
- 10-electrode capacitive touch support
- Hardware accelerated encryption (AES, SHA2, ECC, RSA-4096)
- 2.2 to 3.6V operating range
- 2.5 µA deep sleep current
- 3 SPI, 2 I2C, 2 UART
- 16 PWM outputs
- 2 DAC
- 2 I2S
- 18 analog-to-digital converter (ADC) channels
Platform Features
- Compatible with Arduino IDE
- USB powered
- CP2102 USB-to-UART Bridge
- Extended breadboard compatible headers
- UART, SPI, I2C
- On-board RESET
Changelog
- v1.1
- Grounding via added
- Version bumped to 1.1
- v1.0
- Updated 2N3904 symbol and footprint
- removed JTAG headers
Maintainers
The WiTooth is maintained by thingTronics Innovations.
Main contributor:
- Manohar Bompella @manohar.bompella@thingtronics.com
- Poornima Nagesh @poornima.nagesh@thingtronics.com
- Lovelesh Patel @lovelesh.patel@thingtronics.com
Parts
76| Qty | Value | Footprint | References |
|---|---|---|---|
| 5 | 470E | Resistors_SMD:R_0805_HandSoldering | R7, R11, R12, R13, R14 |
| 4 | 1nF | Capacitors_SMD:C_0805_HandSoldering | C7, C8, C10, C14 |
| 3 | 12K | Resistors_SMD:R_0805_HandSoldering | R1, R2, R6 |
| 3 | 1K | Resistors_SMD:R_0805_HandSoldering | R4, R8, R9 |
| 2 | 0E | Resistors_SMD:R_0805_HandSoldering | R15, R16 |
| 2 | 10uF | Capacitors_SMD:C_0805_HandSoldering | C1, C4 |
| 2 | 1uF | Capacitors_SMD:C_0805_HandSoldering | C6, C13 |
| 2 | 27E | Resistors_SMD:R_0805_HandSoldering | R3, R5 |
| 2 | 27pF | Capacitors_SMD:C_0805_HandSoldering | C9, C11 |
| 2 | 47pF | Capacitors_SMD:C_0805_HandSoldering | C3, C5 |
| 2 | CONN_01X20 | Pin_Headers:Pin_Header_Straight_1x20_Pitch2.54mm | P4, P5 |
| 2 | MMBT3904 | TO_SOT_Packages_SMD:SOT-23_Handsoldering | Q1, Q2 |
| 1 | 0.1uF | Capacitors_SMD:C_0805_HandSoldering | C2 |
| 1 | 100uF | Capacitors_SMD:C_1206_HandSoldering | C12 |
| 1 | 5K | Resistors_SMD:R_0805_HandSoldering | R10 |
| 1 | AMS1117-3V3 | TO_SOT_Packages_SMD:SOT-223 | U1 |
| 1 | BOOT | switches:SW_SPST_B3U-1000P_SUNROM | SW2 |
| 1 | CONNECT | LEDs:LED_0805 | D4 |
| 1 | CP2102 | smt-qfn:QFN-28-1EP_5x5mm_Pitch0.5mm | U2 |
| 1 | Crystal | Crystals:Crystal_SMD_0603-2pin_6.0x3.5mm_HandSoldering | Y1 |
| 1 | ESP-32_WROOM32_Rectangle | ESP-32:ESP32-WROOM_SMALLER_FOOTPRINT | U3 |
| 1 | PWR | LEDs:LED_0805 | D1 |
| 1 | RESET | switches:SW_SPST_B3U-1000P_SUNROM | SW1 |
| 1 | RX_LED | LEDs:LED_0805 | D2 |
| 1 | TX_LED | LEDs:LED_0805 | D3 |
| 1 | USB_A_MALE | USB:usb-PCB_male | P1 |
| 1 | USER | LEDs:LED_0805 | D5 |
| 1 | USER_SW | switches:SW_SPST_B3U-1000P_SUNROM | SW3 |
The 47 most common of 76 parts.
Questions
How big is the WiTooth v1P1 PCB?
It measures 67 × 25.8 mm and has 4 copper layers, 2 mm thick.
What parts does the WiTooth v1P1 use?
76 parts, built around the CP2102 and MMBT3904. 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 WiTooth v1P1 KiCad files?
From the automote/WiTooth repository on GitHub, at the commit this page was made from: the board is v1.1/WiTooth_v1P1.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the WiTooth v1P1 design in my own project?
Its repository publishes it under the GPL-3.0 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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