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what is it?
what is it?
2y
2y
It looks like you're working on a reference design for a device based on the ESP32-WROOM-32E. This design includes:
- Power and data transfer via USB-C.
- Onboard voltage regulation using components like AMS1117-3.3.
- Peripheral connections for expanded functionality.
- USB to Serial conversion using the CH340C.
Key components and their functions:
- ESP32-WROOM-32E: Main microcontroller.
- AMS1117-3.3: Voltage regulator.
- TYPE-C-31-M-12: USB-C connector.
- 1N5819HW-7-F: Schottky diode for reverse voltage protection.
- CH340C: USB to serial converter.
This project serves as a template/reference for creating devices using the ESP32-WROOM-32E. It provides essential connections and components to facilitate power management, communication, and peripheral interfacing.
If you have specific questions or need assistance with any part of the schematic or PCB design in flux, feel free to ask!
2y
1
D2
ESP_RX
GPIO36
ESP_RX
CC1
ESP_TX
GPIO18
USBDP
USBDN
GPIO15
GPIO14
ESP_TX
GPIO21
USBDP
GPIO34
GPIO34
GPIO25
CC2
GPIO27
ESP_IO0
GPIO25
USBDN
ESP_IO0
GPIO22
GPIO16
ESP_IO0
CC1
USBDP
GPIO13
GPIO17
GPIO12
GPIO35
GPIO16
GPIO18
GPIO33
GPIO12
USBDN
ESP_RX
GPIO33
GPIO19
GPIO4
GPIO36
GPIO32
GPIO15
USBDN
ESP_EN
USBDP
GPIO2
GPIO26
GPIO13
GPIO22
CC2
GPIO2
GPIO4
GPIO39
GPIO26
GPIO19
GPIO39
USBDN
GPIO32
ESP_EN
GPIO14
GPIO21
ESP_TX
ESP_EN
GPIO23
GPIO23
ESP_IO0
GPIO5
GPIO27
ESP_EN
GPIO17
USBDP
GPIO35
D1
C4
Capacitance
10uF
+3V3
C3
Capacitance
10uF
VBUS
R1
Resistance
Resistance
Resistance
10kΩ
U3
C11
Capacitance
0.1uF
+3V3
J1
C8
Capacitance
10uF
+5V
R2
Resistance
Resistance
Resistance
5.1kΩ
+3V3
C6
Capacitance
0.1uF
C7
Capacitance
0.1uF
R4
Resistance
1kΩ
J2
R3
Resistance
Resistance
Resistance
5.1kΩ
+5V
C10
Capacitance
0.1uF
+3V3
C2
Capacitance
0.1uF
C1
Capacitance
0.1uF
VBUS
+5V
+3V3
+3V3
+3V3
+3V3
PWR
C9
Capacitance
10uF
USB1
RST
Q1
U2
C5
Capacitance
10uF
U1
BOOT
IC1
Q2
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Assets
ESP32-WROOM-32E Reference Design-removebg-preview.png
ESP32-WROOM-32E Reference Design-removebg-previewThumbnailESP32-WROOM-32E Reference Design wLeq
This project is a reference design for an ESP32-WROOM-32E based device. It features USB-C for power and data transfer, onboard voltage regulation, and multiple peripheral connections. It also includes a CH340C for USB to serial conversion #referenceDesign #project #ESP32 #ESP32WROOM #RF #WIFI #MCU #referenceDesign #simple-embedded #espressif #template #reference-design
Properties
Pricing & Availability
Distributor | Qty 1 |
|---|---|
Arrow | $0.10–$0.63 |
Digi-Key | $1.03–$10.12 |
LCSC | $5.43–$6.17 |
Mouser | $1.98 |
Verical | $0.17–$0.31 |
Controls
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zero1456
copilot
- ESP32-WROOM-32E: A powerful WiFi and Bluetooth module designed by Espressif Systems.
- USB-C Interface: For both power and data transfer.
- Power Regulation: Using components such as the AMS1117-3.3.
- CH340C Chip: For converting USB to serial communication.
- Peripheral Connections: Several GPIOs and interfaces exposed for connecting various peripherals.
Components Breakdown- Diodes: D1, D2
- Capacitors: C1, C2, C3, C4, C5, C6, C7, C8, C9, C10, C11
- Resistors: R1, R2, R3, R4
- Transistors: Q1, Q2
- Connectors: USB-C (TYPE-C-31-M-12), J1, J2
- Voltage Regulator: U1 (AMS1117-3.3)
- MCU: U2 (ESP32-WROOM-32E)
- USB-to-Serial Converter: IC1 (CH340C)
Peripheral Connections- GPIO Pins: Multiple GPIO pins labeled and excluded from BOM for connecting various sensors, actuators, and modules.
- Power Nets: Nets such as +3V3 and +5V for power distribution.
- USB Data Lines: Nets such as USBDP and USBDN for USB data communication.
Purpose