4 layers100 × 100 mm
A SGSS cskpin routed
ThatguyCplus/throttleECU
STM32F411CE Throttle ECU — PID position control with AS5048A encoder, H-bridge motor, safety module
571 parts1
2 layers25.2 × 59.4 mm
Esp32-pcb
krwc/doge323Yet another ESP32 PCB
- Size
- 25.2 × 59.4 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 50
- Nets
- 74
- Pads
- 211
- Tracks, vias
- 520, 104
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 26 Oct 2019
- Updated
- 5 Nov 2019
Overview
Esp32-pcb is an open-source printed circuit board by krwc, from the krwc/doge32 repository on GitHub. It is a 2-layer board of 25.2 × 59.4 mm with 50 parts on 74 nets, routed with 520 tracks and 104 vias.
It is built around the CP2102N-A01-GQFN24, ESP32-WROOM-32 and XC6220B331MR, with the BSS138Q-7-F-ES, MMBT3904 and B140HW-7-HXY among its other parts. Its parts include 16 resistors, 8 capacitors, 7 diodes, 5 transistors and 3 ICs. It belongs with the ESP32 and RISC-V boards of this library.
Main components
8
CP2102N-A01-GQFN24
QFN-24-EP(4x4)3Mbps 3V~3.6V Transceiver QFN-24-EP(4x4) USB Converters ROHSSilicon LabsUSB Converters
ESP32-WROOM-32
SMD,18x25.5mm-40℃~+85℃ -98dBm 2.4GHz 2.7V~3.6V 20dBm Bluetooth4.2 ESP32-DOWDQ6 UART、SDIO、SPI、I2C、GPIO、PWM、ADC、DAC SMD,25.5x18mm WiFi Modules ROHSEspressif SystemsWiFi Modules
XC6220B331MR
SOT-23-5-40℃~+85℃@(Ta) 1 25uA 3.3V 400mV@(800mA) 5.5V 50dB@(10kHz) 900mA Fixed Over Current Protection、Over Temperature Protection Positive SOT-23-5 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSTECH PUBLICVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
BSS138Q-7-F-ES
SOT-23-55℃~+150℃ 1 N-channel 1.5Ω@10V 1V 2.2pF 25pF 400mA 417mW 60V 650pC@4.5V 9.7pF N-Channel SOT-23 MOSFETs ROHSElecSuperMOSFETsMMBT3904
SOT-23-55℃~+150℃ 1 NPN 100 100nA 200mA 200mW 300MHz 300mV 40V 6V NPN SOT-23 Bipolar (BJT) ROHSJiangsu Changjing Electronics Technology (CJ)Bipolar (BJT)
B140HW-7-HXY
SOD-123SOD-123 Schottky Diodes ROHSHXY MOSFETSchottky DiodesSI2333DDS-T1-GE3-MS
SOT-23MOSFETsMSKSEMI
SP0503BAHTG
SOT-143-55℃~+125℃ 10A@8/20us 14V 150W@8/20us 30pF、60pF 5.5V 6V 80nA ESD IEC 61000-4-2、IEC 61000-4-5、IEC 61000-4-4 Three channels Unidirectional SOT-143 ESD and Surge Protection (TVS/ESD) ROHSTECH PUBLICESD And Surge Protection (TVS/ESD)
README
README.mdDOGE32 Features
Small footprint
The board is 25mm x 59mm, which means it can fit into the standard breadboard nicely, and each pin will be accessible.
Battery slot
The board can be powered by 3.7V li-po battery.
Low power consumption
In deep sleep mode, the board consumes only about 13µA. This is a pretty good result and will let the device work for a long period of time on a battery.
Dual supply support
You may power the device from battery as well as from the USB at the same time - useful feature if you're making some quick fixes to the "already deployed" device.
Built-in voltage measurement on IO35 pin
The IO35 pin of the ESP32 is connected to the (switchable via IO32), to avoid excessive current draw input voltage divider, and can be used to determine the battery level of the battery.
Cutting off the USB-UART converter when powered on from the battery
Many ESP32 boards don't do it, which is a problem, because not all revisions of CP2102N enter suspend state correctly, which means they draw current (a few milliamps) when they are not supposed to (e.g. when powered on from the battery). This issue is fixed in our board.
Slow rising reset fix
ESP32 has a bug that makes automatic reset during flashing with tools such as esptool.py not happening, and thus requires manual user intervention.
Our board also incorporates the fix for this problem.
Renders
Authors
Me and dextero. The board is an absolute overkill, built to monitor soil moisture and eventually to help reminiding about watering plants more often ;-).
Parts
50| Qty | Value | Footprint | References |
|---|---|---|---|
| 7 | 10k | Resistor_SMD:R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R2, R3, R4, R5, R6, R9, R12 |
| 4 | 1k | Resistor_SMD:R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R1, R8, R10, R11 |
| 4 | 470 | Resistor_SMD:R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R13, R14, R15, R16 |
| 3 | 0.1uF | Capacitor_SMD:C_0603_1608Metric_Pad1.05x0.95mm_HandSolder | C3, C5, C7 |
| 3 | 4.7uF | Capacitor_SMD:C_0603_1608Metric_Pad1.05x0.95mm_HandSolder | C4, C6, C8 |
| 2 | 10uF | Capacitor_SMD:C_0603_1608Metric_Pad1.05x0.95mm_HandSolder | C1, C2 |
| 2 | BSS138Q-7-F | Package_TO_SOT_SMD:SOT-23 | Q2, Q5 |
| 2 | Conn_01x15_Male | Connector_PinHeader_2.54mm:PinHeader_1x15_P2.54mm_Vertical | J1, J2 |
| 2 | MMBT3904 | Package_TO_SOT_SMD:SOT-23 | Q3, Q4 |
| 1 | 3.7V | Connector_JST:JST_PH_S2B-PH-K_1x02_P2.00mm_Horizontal | BT1 |
| 1 | 30k | Resistor_SMD:R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R7 |
| 1 | B140HW-7 | Diode_SMD:D_SOD-123 | D2 |
| 1 | CP2102N-A01-GQFN24 | Package_DFN_QFN:QFN-24-1EP_4x4mm_P0.5mm_EP2.6x2.6mm | U3 |
| 1 | ESP32-WROOM-32 | RF_Module:ESP32-WROOM-32 | U2 |
| 1 | LED_BLUE | LED_SMD:LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder | D5 |
| 1 | LED_GREEN | LED_SMD:LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder | D4 |
| 1 | LED_RED | LED_SMD:LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder | D3 |
| 1 | LED_USB_PWR | LED_SMD:LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder | D1 |
| 1 | LED_YELLOW | LED_SMD:LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder | D6 |
| 1 | MicroUSB type B | Connector_USB:USB_Micro-B_Molex_47346-0001 | USB1 |
| 1 | RESET | Button_Switch_SMD:SW_SPST_B3U-1000P | SW1 |
| 1 | SI2333DDS-T1-GE3 | Package_TO_SOT_SMD:SOT-23 | Q1 |
| 1 | SP0503BAHT | Package_TO_SOT_SMD:SOT-143 | D7 |
| 1 | SW_DIP_x04 | Button_Switch_SMD:SW_DIP_SPSTx04_Slide_6.7x11.72mm_W8.61mm_P2.54mm_LowProfile | SW3 |
| 1 | USER | Button_Switch_SMD:SW_SPST_B3U-1000P | SW2 |
| 1 | XC6220B331MR | Package_TO_SOT_SMD:SOT-23-5_HandSoldering | U1 |
The 46 most common of 50 parts.
Questions
How big is the Esp32-pcb PCB?
It measures 25.2 × 59.4 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Esp32-pcb use?
50 parts, built around the CP2102N-A01-GQFN24, ESP32-WROOM-32, XC6220B331MR and BSS138Q-7-F-ES. 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-pcb KiCad files?
From the krwc/doge32 repository on GitHub, at the commit this page was made from: the board is esp32-pcb.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Esp32-pcb design in my own project?
Its repository states no licence, so its author keeps all rights: ask krwc before reusing the design.
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