Chat

Welcome to Flux

Treat Flux like your intern. Tell it what you'd like to build and it'll get to work. You can also ask it questions, brainstorm ideas, and teach it your preferences. Learn More

Explain project
Write a project description
Find schematic issues
Create a test plan
Simulate a circuit
Prepare for Manufacturing
Component Selection Workflow
New Subsystem Wizard
Sign up to send
PROG_MODULE
Check that all reset/enable have an external pull-up or pull-down resistors. Rep...
markwuflux

markwuflux

@copilot Check that all reset/enable have an external pull-up or pull-down resistors. Report action items in an ordered list.
2y

copilot

To check if all reset/enable signals have required pull-up or pull-down resistors, let's review the project components and nets.
  1. U3 - ESP32-WROOM-32: This component has an enable pin labeled as 'EN'. According to the datasheet of ESP32-WROOM-32, an RC delay circuit is usually recommended at the EN pin. Typically, the resistor value is (10 , k\Omega) and the capacitance value is (1 , \mu F). These values may need to be adjusted depending on the exact power-up timing requirements of your specific application[1].
  2. Examining the project nets, there's a net named 'RESET' that appears to be associated with the EN pin of U3. However, there's no clear information if there's an external resistor connected to this net.
Based on these observations, here are the action items:
  1. Check the connections of the 'EN' pin of U3. Ensure it's connected to an RC delay circuit as recommended in the ESP32-WROOM-32 datasheet.
  2. Find and check the functionality of the 'RESET' net. If it's connected to an enable or reset pins of components, ensure that it has the necessary pull-up or pull-down resistors.
  3. For every component in the project that has a reset or enable pin, ensure that it is connected to an appropriate net and has an external pull-up or pull-down resistor if necessary. Reference the specific component datasheets for direction on this.
[1] Page 19
2y
Someone is typing...
3
LCSC Part C295747 Works for J2 https://storage.googleapis.com/flux-comment-file...
markwuflux

markwuflux

LCSC Part C295747 Works for J2
Image

Image

https://storage.googleapis.com/flux-comment-files/files/commentFileId-505d8603122109ed1874fc30713b9804f022105052a3b0025beea21dd158ede8.jpeg?GoogleAccessId=graviton-mvp%40appspot.gserviceaccount.com&Expires=4857471744&Signature=XriiyOrfctNZFg954%2BPs9ZbbdLWV6W7NdhBjxe9mVT4OJPnWpqiI00r2svn9oBLo7scCj3WbUU%2BqlBAcNVKIS1pXpeCUpCl1hJvQuVRws%2ByUa0ySJJ5hL1Kmyyaz0ARf4Kx9NouC6fTEVJsxBCABiRYGgFOToF9dovTCKpkRqhonOmzEzKmVoQdd59esfImpTiT0fCwm2MOCk2hIxu7pbXeM9KhvpVBswrG5xk9QvsO5nmW7TcJZUl2PxCLnwSfBYVVNzdMODVX%2BDyEHWFqi1T3PJmn0EbJGb9VgiMJQK9Y0jQU9JQEyHiGhSF5StQxgslG3mZLT9vtQEJkz1DB0vA%3D%3D
2y
Someone is typing...
6
please connect the HSPI bus on U3 to the SPI bus on BUCK\_MODULE
markwuflux

markwuflux

@copilot please connect the HSPI bus on U3 to the SPI bus on BUCK_MODULE
2y

copilot

To connect the HSPI bus on ESP32 (U3) to the SPI bus on the BUCK_MODULE, you can connect the following pins:
  1. Connect U3:IO13/HSPI_COPI to BUCK_MODULE:BUCK_SPI_COPI
  2. Connect U3:IO12/HSPI_CIPO to BUCK_MODULE:BUCK_SPI_CIPO
  3. Connect U3:IO14/HSPI_CLK to BUCK_MODULE:BUCK_SPI_CLK
  4. Connect U3:IO15/HSPI_CS0 to BUCK_MODULE:BUCK_SPI_CS
Please note that this is assuming the BUCK_MODULE supports SPI and is compatible with the locations of the HSPI pins of the ESP32. If your BUCK_MODULE uses a different naming scheme for SPI pins, you'll need to adapt this accordingly.
Here's what each connection does:
  • COPI (Controller Out-Peripheral In), also known as MOSI (Master Out-Slave In), sends data from the ESP32 to the BUCK_MODULE.
  • CIPO (Controller In-Peripheral Out), also known as MISO (Master In-Slave Out), sends data from the BUCK_MODULE to the ESP32.
  • CLK is the clock signal for synchronizing data transfer.
  • CS is the Chip Select, or Slave Select, which enables communication with the BUCK_MODULE when pulled low.
Remember, communication protocols like SPI can vary across different devices, so ensure to check your specific BUCK_MODULE datasheet to verify the correct connections.
2y
Someone is typing...
2
pullups that I forgot to add
markwuflux

markwuflux

pullups that I forgot to add
2y
Someone is typing...
4
ORDERING INFO: -Order Test with 4 layer export -Order Production with 2 layer e...
markwuflux

markwuflux

ORDERING INFO: -Order Test with 4 layer export
-Order Production with 2 layer export (ONLY USE INNER LAYERS FOR TEST CONNECTOR)
2y
Someone is typing...
5
J2
Not Recommended for New Designs
RESET
USB_DN
U3 IO15/HSPI_CS0 - BUCK_MODULE BUCK_SPI_CS
USB_DP
U3 IO13/HSPI_COPI - BUCK_MODULE BUCK_SPI_COPI
GPIO0
USB_DP
MCU_RX
BUCKEN
MCU_TX
GPIO0
MCU_TX
RESET
U3 IO14/HSPI_CLK - BUCK_MODULE BUCK_SPI_CLK
MCU_RX
GPIO0
U3 IO15/HSPI_CS0 - BUCK_MODULE BUCK_SPI_CS
USB_DN
U3 IO14/HSPI_CLK - BUCK_MODULE BUCK_SPI_CLK
BUCKEN
RESET
U3 IO13/HSPI_COPI - BUCK_MODULE BUCK_SPI_COPI
U4
Manufacturer Part Number
ME6206A33XG
3.3V
5V/BATT
5V_USB
0V-1.9V
3.3V
5V/BATT
3.3V
0V-1.9V
3.3V
5V_USB
3.3V
3.3V
3.3V
0V-1.9V
0V-1.9V
3.3V
0V-1.9V
0V-1.9V
M1
R10
Resistance
10kΩ
C9
Capacitance
0.1uF
M4
M3
R9
Resistance
10kΩ
U3
C10
Capacitance
1uF
C8
Capacitance
1uF
C7
Capacitance
1uF
M2
R7
Resistance
5.1kΩ
J4
Test Breakout
J1
SW2
SW1
8
New Comment
Someone is typing...
BUCK_MODULE
  • Ground
    Ground
    A common return path for electric current. Commonly known as ground.
    jharwinbarrozo
    20.5M
  • Net Portal
    Net Portal
    Wirelessly connects nets on schematic. Used to organize schematics and separate functional blocks. To wirelessly connect net portals, give them same designator. #portal
    jharwinbarrozo
    43.0M
  • Power Net Portal
    Power Net Portal
    Wirelessly connects power nets on schematic. Identical to the net portal, but with a power symbol. Used to organize schematics and separate functional blocks. To wirelessly connect power net portals, give them the same designator. #portal #power
    jharwinbarrozo
    11.4M
  • Generic Resistor
    Generic Resistor
    A generic fixed resistor ideal for rapid circuit topology development. Its footprint automatically adapts based on the selected package case code—supporting 0402, 0603, 0805, 1203, and many other standard SMD packages, as well as axial horizontal and vertical configurations. Save precious design time by seamlessly add more information to this part (value, footprint, etc.) as it becomes available. Standard resistor values: 1.0 ohm, 10 ohm, 100 ohm, 1.0k ohm, 10k ohm, 100k ohm, 1.0M ohm 1.1 ohm, 11 ohm, 110 ohm, 1.1k ohm, 11k ohm, 110k ohm, 1.1M ohm 1.2 ohm, 12 ohm, 120 ohm, 1.2k ohm, 12k ohm, 120k ohm, 1.2M ohm 1.3 ohm, 13 ohm, 130 ohm, 1.3k ohm, 13k ohm, 130k ohm, 1.3M ohm 1.5 ohm, 15 ohm, 150 ohm, 1.5k ohm, 15k ohm, 150k ohm, 1.5M ohm 1.6 ohm, 16 ohm, 160 ohm, 1.6k ohm, 16k ohm, 160k ohm, 1.6M ohm 1.8 ohm, 18 ohm, 180 ohm, 1.8K ohm, 18k ohm, 180k ohm, 1.8M ohm 2.0 ohm, 20 ohm, 200 ohm, 2.0k ohm, 20k ohm, 200k ohm, 2.0M ohm 2.2 ohm, 22 ohm, 220 ohm, 2.2k ohm, 22k ohm, 220k ohm, 2.2M ohm 2.4 ohm, 24 ohm, 240 ohm, 2.4k ohm, 24k ohm, 240k ohm, 2.4M ohm 2.7 ohm, 27 ohm, 270 ohm, 2.7k ohm, 27k ohm, 270k ohm, 2.7M ohm 3.0 ohm, 30 ohm, 300 ohm, 3.0K ohm, 30K ohm, 300K ohm, 3.0M ohm 3.3 ohm, 33 ohm, 330 ohm, 3.3k ohm, 33k ohm, 330k ohm, 3.3M ohm 3.6 ohm, 36 ohm, 360 ohm, 3.6k ohm, 36k ohm, 360k ohm, 3.6M ohm 3.9 ohm, 39 ohm, 390 ohm, 3.9k ohm, 39k ohm, 390k ohm, 3.9M ohm 4.3 ohm, 43 ohm, 430 ohm, 4.3k ohm, 43K ohm, 430K ohm, 4.3M ohm 4.7 ohm, 47 ohm, 470 ohm, 4.7k ohm, 47k ohm, 470k ohm, 4.7M ohm 5.1 ohm, 51 ohm, 510 ohm, 5.1k ohm, 51k ohm, 510k ohm, 5.1M ohm 5.6 ohm, 56 ohm, 560 ohm, 5.6k ohm, 56k ohm, 560k ohm, 5.6M ohm 6.2 ohm, 62 ohm, 620 ohm, 6.2k ohm, 62K ohm, 620K ohm, 6.2M ohm 6.8 ohm, 68 ohm, 680 ohm, 6.8k ohm, 68k ohm, 680k ohm, 6.8M ohm 7.5 ohm, 75 ohm, 750 ohm, 7.5k ohm, 75k ohm, 750k ohm, 7.5M ohm 8.2 ohm, 82 ohm, 820 ohm, 8.2k ohm, 82k ohm, 820k ohm, 8.2M ohm 9.1 ohm, 91 ohm, 910 ohm, 9.1k ohm, 91k ohm, 910k ohm, 9.1M ohm #generics #CommonPartsLibrary
    jharwinbarrozo
    1.5M
  • Generic Capacitor
    Generic Capacitor
    A generic fixed capacitor ideal for rapid circuit topology development. You can choose between polarized and non-polarized types, its symbol and the footprint will automatically adapt based on your selection. Supported options include standard SMD sizes for ceramic capacitors (e.g., 0402, 0603, 0805), SMD sizes for aluminum electrolytic capacitors, and through-hole footprints for polarized capacitors. Save precious design time by seamlessly add more information to this part (value, footprint, etc.) as it becomes available. Standard capacitor values: 1.0pF, 10pF, 100pF, 1000pF, 0.01uF, 0.1uF, 1.0uF, 10uF, 100uF, 1000uF, 10000uF 1.1pF, 11pF, 110pF, 1100pF 1.2pF, 12pF, 120pF, 1200pF 1.3pF, 13pF, 130pF, 1300pF 1.5pF, 15pF, 150pF, 1500pF, 0.015uF, 0.15uF, 1.5uF, 15uF, 150uF, 1500uF 1.6pF, 16pF, 160pF, 1600pF 1.8pF, 18pF, 180pF, 1800pF 2.0pF, 20pF, 200pF, 2000pF 2.2pF, 22pF, 220pF, 2200pF, 0.022uF, 0.22uF, 2.2uF, 22uF, 220uF, 2200uF 2.4pF, 24pF, 240pF, 2400pF 2.7pF, 27pF, 270pF, 2700pF 3.0pF, 30pF, 300pF, 3000pF 3.3pF, 33pF, 330pF, 3300pF, 0.033uF, 0.33uF, 3.3uF, 33uF, 330uF, 3300uF 3.6pF, 36pF, 360pF, 3600pF 3.9pF, 39pF, 390pF, 3900pF 4.3pF, 43pF, 430pF, 4300pF 4.7pF, 47pF, 470pF, 4700pF, 0.047uF, 0.47uF, 4.7uF, 47uF, 470uF, 4700uF 5.1pF, 51pF, 510pF, 5100pF 5.6pF, 56pF, 560pF, 5600pF 6.2pF, 62pF, 620pF, 6200pF 6.8pF, 68pF, 680pF, 6800pF, 0.068uF, 0.68uF, 6.8uF, 68uF, 680uF, 6800uF 7.5pF, 75pF, 750pF, 7500pF 8.2pF, 82pF, 820pF, 8200pF 9.1pF, 91pF, 910pF, 9100pF #generics #CommonPartsLibrary
    jharwinbarrozo
    1.5M
  • Generic Inductor
    Generic Inductor
    A generic fixed inductor suitable for rapid circuit topology development. The footprint automatically adapts based on the selected package, supporting standard SMD sizes (e.g., 0402, 0603, 0805) as well as well-known inductor packages such as SDR1806, PA4320, SRN6028, and SRR1260. Standard inductor values: 1.0 nH, 10 nH, 100 nH, 1.0 µH, 10 µH, 100 µH, 1.0 mH 1.2 nH, 12 nH, 120 nH, 1.2 µH, 12 µH, 120 µH, 1.2 mH 1.5 nH, 15 nH, 150 nH, 1.5 µH, 15 µH, 150 µH, 1.5 mH 1.8 nH, 18 nH, 180 nH, 1.8 µH, 18 µH, 180 µH, 1.8 mH 2.2 nH, 22 nH, 220 nH, 2.2 µH, 22 µH, 220 µH, 2.2 mH 2.7 nH, 27 nH, 270 nH, 2.7 µH, 27 µH, 270 µH, 2.7 mH 3.3 nH, 33 nH, 330 nH, 3.3 µH, 33 µH, 330 µH, 3.3 mH 3.9 nH, 39 nH, 390 nH, 3.9 µH, 39 µH, 390 µH, 3.9 mH 4.7 nH, 47 nH, 470 nH, 4.7 µH, 47 µH, 470 µH, 4.7 mH 5.6 nH, 56 nH, 560 nH, 5.6 µH, 56 µH, 560 µH, 5.6 mH 6.8 nH, 68 nH, 680 nH, 6.8 µH, 68 µH, 680 µH, 6.8 mH 8.2 nH, 82 nH, 820 nH, 8.2 µH, 82 µH, 820 µH, 8.2 mH #generics #CommonPartsLibrary
    jharwinbarrozo
    15.8k
  • Terminal
    Terminal
    An electrical connector acting as reusable interface to a conductor and creating a point where external circuits can be connected.
    natarius
  • RMCF0805JT47K0
    RMCF0805JT47K0
    47 kOhms ±5% 0.125W, 1/8W Chip Resistor 0805 (2012 Metric) Automotive AEC-Q200 Thick Film #forLedBlink
    jharwinbarrozo
    1.2M
  • 875105359001
    875105359001
    10uF Capacitor Aluminum Polymer 20% 16V SMD 5x5.3mm #forLedBlink #commonpartslibrary #capacitor #aluminumpolymer #radialcan
    jharwinbarrozo
    1.2M
  • CTL1206FYW1T
    CTL1206FYW1T
    Yellow 595nm LED Indication - Discrete 1.7V 1206 (3216 Metric) #forLedBlink
    jharwinbarrozo
    1.1M

On Air R2 Demo

On Air R2 Demo 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

Arrow

$0.24–$1.04

Digi-Key

$2.34–$29.38

LCSC

$4.17

Mouser

$0.54–$2.38

Verical

$0.24–$1.25

Controls