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PROG_MODULE
J2
Not Recommended for New Designs
RESET
USB_DN
U3 IO15/HSPI_CS0 - BUCK_MODULE BUCK_SPI_CS
USB_DP
3.3V
5V/BATT
U3 IO13/HSPI_COPI - BUCK_MODULE BUCK_SPI_COPI
5V_USB
GPIO0
USB_DP
0V-1.9V
3.3V
MCU_RX
BUCKEN
5V/BATT
MCU_TX
0V-1.9V
3.3V
GPIO0
MCU_TX
RESET
U3 IO14/HSPI_CLK - BUCK_MODULE BUCK_SPI_CLK
3.3V
MCU_RX
3.3V
U3 IO15/HSPI_CS0 - BUCK_MODULE BUCK_SPI_CS
0V-1.9V
USB_DN
0V-1.9V
U3 IO14/HSPI_CLK - BUCK_MODULE BUCK_SPI_CLK
3.3V
BUCKEN
U3 IO13/HSPI_COPI - BUCK_MODULE BUCK_SPI_COPI
0V-1.9V
0V-1.9V
U4
Manufacturer Part Number
ME6206A33XG
C9
Capacitance
0.1uF
U3
C10
Capacitance
1uF
C8
Capacitance
1uF
C7
Capacitance
1uF
R7
Resistance
5.1kΩ
BUCK_MODULE

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On Air Sign [You're Holding it Wrong]

On Air Sign [You're Holding it Wrong] thumbnail
R2 changes: -Moving to Letter Modules for ease of design -Adding ESP32 for WiFi On/Off and intensity control
-Optional: Add unpopulated AA Battery Holder for battery option
R1 changes: -Changed LED part to Red LEDs -adjusted resistor value of buck converter -Changed source for USB-C Connector -Removed exposed soldermask on buck converter with negative soldermask expansion -Order with black soldermask
Modified by markwu2001:
  • Adjustable Brightness,
  • 85-90% Drive Efficiency
  • <5W Operation (Can use 5V 1A Plug) This project can be purchased from LCSC
Original Description: Daddy's second circuit board. A sign to let my wife know when I'm on a call. Activates with a slide switch and is powered by USB-C. #template

Properties

5VDC, 4.2VDC

WiFi

github.com/markwu2001/On-Air-R2-DEV

creativecommons.org/licenses/by/4.0/

Pricing & Availability

Distributor

Qty 1

LCSC

$0.19

Controls