2 layers90.2 × 49.6 mm
Esp32
Hackuarium/esp-32wroom
Start by installing the ESP32 board in Arduino IDE https://randomnerdtutorials.com/installing-the-esp32-board-in-arduino-ide-mac-and-linux-instructions/ (Mac/Linux)…
72 parts
2 layers85 × 75 mm
Start by installing the ESP32 board in Arduino IDE https://randomnerdtutorials.com/installing-the-esp32-board-in-arduino-ide-mac-and-linux-instructions/ (Mac/Linux)…
- Size
- 85 × 75 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 74
- Nets
- 75
- Pads
- 249
- Tracks, vias
- 597, 62
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 8 Oct 2019
- Updated
- 20 Dec 2019
Overview
Esp32 is an open-source printed circuit board by Hackuarium, from the Hackuarium/esp-32wroom repository on GitHub. It is a 2-layer board of 85 × 75 mm with 74 parts on 75 nets, routed with 597 tracks and 62 vias.
It is built around the ESP32-WROOM-32U, ACT4088US-T and DS18B20U, with the SI7020-A20-GM, TCS34001FN and AP7365-33YG among its other parts. Its parts include 18 connectors, 15 resistors, 12 capacitors, 8 ICs and 7 diodes. It belongs with the ESP32 boards of this library.
Main components
8
ESP32-WROOM-32U
SMD,19.2x18mm-40℃~+85℃ -97dBm 2.4GHz 20.5dBm 3V~3.6V Bluetooth4.2 ESP32-DOWD UART、SDIO、SPI、I2C、GPIO、PWM、ADC、DAC、CAN SMD,19.2x18mm WiFi Modules ROHSEspressif SystemsWiFi Modules
ACT4088US-T
SOT-23-6Buck Built-in SOT-23-6 DC-DC Converters ROHSQorvoDC-DC Converters
DS18B20U
MSOP-8-55℃~+125℃ 12bit 2.5V~5.5V 400ms 750nA Single-bus ±0.4℃ MSOP-8 Temperature Sensors ROHSUMWTemperature Sensors
SI7020-A20-GM
DFN-6-EP(3x3)-40℃~+85℃ 0%RH~100%RH 1.9V~3.6V 12bit 150uA 4%RH Factory calibration、Built-in heater I2C ±0.4℃ DFN-6-EP(3x3) Temperature and Humidity Sensor ROHSSilicon LabsTemperature And Humidity Sensor
TCS34001FN
DFN-6(2x2.4)-40℃~+70℃ 2.7V~3.6V 235uA Color Recognition I2C Red, Green, Blue, IR DFN-6(2x2.4) Ambient Light Sensors ROHSAdvanced Monolithic SystemsAmbient Light Sensors
AP7365-33YG
SOT-89-40℃~+85℃@(Ta) 1 3.3V 600mA 600mV@(600mA) 65dB@(1kHz) 6V 80uA Fixed Over Current Protection、Short Circuit Protection、Thermal Shutdown Positive SOT-89 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSDiodes IncorporatedVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
B240A
SMA-65℃~+150℃ 1 Independent 2A 40V 500mV@2A 500uA@40V 50A SMA Schottky Diodes ROHSDiodes IncorporatedSchottky Diodes
DMP1045U
SOT-23-55℃~+150℃ 1 P-Channel 1.357nF 1.3W 12V 15.8nC@4.5V 1V 235pF 31mΩ@4.5V 5.2A 504pF P-Channel SOT-23 MOSFETs ROHSDiodes IncorporatedMOSFETs
README
README.md| # | Name | A | SPI | HS | I2C | Touch | Used | RTC |
|---|---|---|---|---|---|---|---|---|
| 1 | GND | |||||||
| 2 | 3V3 | |||||||
| 3 | EN | |||||||
| 4 | SENSOR_VP/IO36 | A0 | RTC_GPIO0 | |||||
| 5 | SENSOR_VN/IO39 | A3 | Charging | RTC_GPIO3 | ||||
| 6 | IO34 | A6 | OneWire1 | RTC_GPIO4 | ||||
| 7 | IO35 | A7 | OneWire2 | RTC_GPIO5 | ||||
| 8 | IO32 | A4 | T9 | Ext3 | RTC_GPIO9 | |||
| 9 | IO33 | A5 | T8 | Ext4 | RTC_GPIO8 | |||
| 10 | IO25 | A18 * | Ext1 | RTC_GPIO6 | ||||
| 11 | IO26 | A19 * | Ext2 | RTC_GPIO7 | ||||
| 12 | IO27 | A17 * | T7 | ADC battery | RTC_GPIO17 | |||
| 13 | IO14 | A16 * | HSPICLK | HS2_CLK | T6 | Blue | RTC_GPIO16 | |
| 14 | IO12 | A15 * | HSPIQ | HS2_DATA2 | T5 | Red | RTC_GPIO15 | |
| 15 | GND | |||||||
| 16 | IO13 | A14 * | HSPID | HS2_DATA3 | T4 | Green | RTC_GPIO14 | |
| 17 | SHD/SD2 | SPIHD | HS1 | |||||
| 18 | SWP/SD3 | SPIWP | ||||||
| 19 | SCS/CMD | SPICS0 | ||||||
| 20 | SCK/CLK | SPICLK | ||||||
| 21 | SDO/SD0 | SPIQ | ||||||
| 22 | SDI/SD1 | SPID | ||||||
| 23 | IO15 | A13 * | HSPICS0 | T3 | White | RTC_GPIO13 | ||
| 24 | IO2 | A12 * | HSPIWP | T2 | RESERVED | RTC_GPIO12 | ||
| 25 | IO0 | A11 * | T1 | Prog | RTC_GPIO11 | |||
| 26 | IO4 | A10 * | HSPIHD | HS2_DATA1 | T0 | OneWire1 | RTC_GPIO10 | |
| 27 | IO16 | HS1_DATA4 | ||||||
| 28 | IO17 | HS1_DATA5 | ||||||
| 29 | IO5 | VSPICS0 | HS1_DATA6 | |||||
| 30 | IO18 | VSPICLK | HS1_DATA7 | Blink LED | ||||
| 31 | IO19 | VSPIQ | ||||||
| 32 | NC | |||||||
| 33 | IO21 | VSPIHD | SDA | SDA | ||||
| 34 | RXD0 | RX | ||||||
| 35 | TXD0 | TX | ||||||
| 36 | IO22 | VSPIWP | SCL | SCL | ||||
| 37 | IO23 | VSPID | HS1_STROBE | |||||
| 38 | GND |
*: not usable with WIFI
ESP32-Wroom32 datasheet
https://www.espressif.com/sites/default/files/documentation/esp32-wroom-32_datasheet_en.pdf
Official Espressif hardware design guidelines
https://www.espressif.com/sites/default/files/documentation/esp32_hardware_design_guidelines_en.pdf
Really DIY ESP32 board
https://www.instructables.com/id/DIY-ESP32-Development-Board-ESPer/
Programming an ESP32 from Arduino IDE
Start by installing the ESP32 board in Arduino IDE https://randomnerdtutorials.com/installing-the-esp32-board-in-arduino-ide-mac-and-linux-instructions/ (Mac/Linux) https://randomnerdtutorials.com/installing-the-esp32-board-in-arduino-ide-windows-instructions/ (Windows)
Getting started with ESP32 (including blink example) https://randomnerdtutorials.com/getting-started-with-esp32/
Some debug information https://github.com/espressif/esptool/wiki/ESP32-Boot-Mode-Selection
Flashing board
In Arduino IDE, select "ESP32 Wrover module" (>tools>boards), connect the UART programmer to the board (make sure it is in the right orientation), select the corresponding port (>tools>port). Write a simple sketch (for example blink using pin18 for the red light), and upload it to the board, after seeing the "Connecting..." message in the lower windows of Arduino IDE, press both buttons (PROG and RESET), release the "RESET" button first and then release the "BOOT" button, the upload should start. After this, press reset so that the latest code runs on the board (you should see the red light blinking).
To avoid worrying about pressing the button, connect 10 uF electrolytic capacitor between the EN pin and GND (may work or not depending on boards...) (https://randomnerdtutorials.com/solved-failed-to-connect-to-esp32-timed-out-waiting-for-packet-header/)
Resources
Many ESP32 tutorials/projects are available at Random Nerd Tutorials (web-based, sensor-based, data logging, deep sleep...): https://randomnerdtutorials.com/projects-esp32/
Schema for a dev kit: https://dl.espressif.com/dl/schematics/esp32_devkitc_v4-sch.pdf
Ultra low power tips for ESP32: http://iot-bits.com/ultra-low-power-design-esp32-10-tips/
FreeRTOS
Functions
- RGBW
- PCA9685 + 4 x BSP75
- WS2812 : addressable led
- Luminosity: TCS3400 or VEML6040 or VEML7700
- Pressure: MS5637
- Humidity / Temperature: ChipCAP2 or Si7021
- Power monitoring
Parts
74| Qty | Value | Footprint | References |
|---|---|---|---|
| 6 | 10k | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R2, R5, R8, R9, R11, R16 |
| 5 | 10uF | Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C2, C3, C4, C5, C6 |
| 4 | BSP75 | Package_TO_SOT_SMD:SOT-223 | Q1, Q2, Q3, Q4 |
| 4 | hole | MountingHole:MountingHole_3.2mm_M3 | J5, J6, J7, J8 |
| 3 | 4.7k | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R1, R3, R17 |
| 3 | D_Schottky | Diode_SMD:D_SOD-123 | D1, D3, D5 |
| 2 | 100nF | Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C1, C7 |
| 2 | C | Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C8, C9 |
| 2 | LED | LED_SMD:LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D2, D4 |
| 2 | OneWire | TestPoint:TestPoint_2Pads_Pitch2.54mm_Drill0.8mm | TP1, TP6 |
| 2 | Onewire | Connector_Audio:Jack_3.5mm_Ledino_KB3SPRS_Horizontal | J3, J4 |
| 2 | RJ12-I2C | Connector_RJ:RJ12_Amphenol_54601 | J16, J17 |
| 1 | +12V | Connector_Wire:SolderWirePad_1x01_SMD_5x10mm | J2 |
| 1 | 100k | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R6 |
| 1 | 10µF | Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C11 |
| 1 | 1M | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R7 |
| 1 | 1k | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R4 |
| 1 | 22nF | Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C10 |
| 1 | 22µF | Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C12 |
| 1 | 270k | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R10 |
| 1 | 3.3V | TestPoint:TestPoint_2Pads_Pitch2.54mm_Drill0.8mm | TP4 |
| 1 | 4.7µH | Inductor_SMD:L_0805_2012Metric_Pad1.15x1.40mm_HandSolder | L1 |
| 1 | 49.9k | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R12 |
| 1 | 5 / 12V | Connector_BarrelJack:BarrelJack_Horizontal | J1 |
| 1 | 5V | TestPoint:TestPoint_2Pads_Pitch2.54mm_Drill0.8mm | TP2 |
| 1 | 9.64k | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R13 |
| 1 | ACT4088 | Package_TO_SOT_SMD:SOT-23-6_Handsoldering | U6 |
| 1 | AP7365-33YG | Package_TO_SOT_SMD:SOT-89-3_Handsoldering | U5 |
| 1 | B240A | Diode_SMD:D_SOD-123 | D7 |
| 1 | BATT | Connector_Molex:Molex_KK-254_AE-6410-02A_1x02_P2.54mm_Vertical | J18 |
| 1 | Blue | Connector_Wire:SolderWirePad_1x01_SMD_5x10mm | J12 |
| 1 | CONN FT232RL | Connector_PinHeader_2.54mm:PinHeader_1x06_P2.54mm_Vertical | J15 |
| 1 | DMP1045U | Package_TO_SOT_SMD:SOT-23 | D6 |
| 1 | DS18B20U | Package_SO:MSOP-8_3x3mm_P0.65mm | U7 |
| 1 | ESP32-WROOM-32U | RF_Module:ESP32-WROOM-32U | U1 |
| 1 | Green | Connector_Wire:SolderWirePad_1x01_SMD_5x10mm | J11 |
| 1 | IO_RGBW | Connector_PinHeader_2.54mm:PinHeader_1x08_P2.54mm_Vertical | J9 |
| 1 | MCP73831-2 | Package_TO_SOT_SMD:SOT-23-5 | U4 |
| 1 | MS5637 | hackuarium:MS5637 | U2 |
| 1 | PROG | Button_Switch_SMD:SW_SPST_PTS645 | SW2 |
| 1 | Pad | Connector_Wire:SolderWirePad_1x01_SMD_5x10mm | J14 |
| 1 | RESET | Button_Switch_SMD:SW_SPST_PTS645 | SW1 |
| 1 | Red | Connector_Wire:SolderWirePad_1x01_SMD_5x10mm | J10 |
| 1 | Si7020-A20 | Package_DFN_QFN:DFN-6-1EP_3x3mm_P1mm_EP1.5x2.4mm | U3 |
| 1 | TCS3400 | OptoDevice:Broadcom_DFN-6_2x2mm_P0.65mm | U8 |
| 1 | Test_i2C | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | TP8 |
| 1 | V_BAT | TestPoint:TestPoint_2Pads_Pitch2.54mm_Drill0.8mm | TP5 |
| 1 | V_OUT | TestPoint:TestPoint_2Pads_Pitch2.54mm_Drill0.8mm | TP3 |
| 1 | White | Connector_Wire:SolderWirePad_1x01_SMD_5x10mm | J13 |
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Questions
How big is the Esp32 PCB?
It measures 85 × 75 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Esp32 use?
74 parts, built around the ESP32-WROOM-32U, ACT4088US-T, DS18B20U and SI7020-A20-GM. 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 Esp32 KiCad files?
From the Hackuarium/esp-32wroom repository on GitHub, at the commit this page was made from: the board is playground/kicad/esp32.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Esp32 design in my own project?
Its repository states no licence, so its author keeps all rights: ask Hackuarium before reusing the design.