ESP32 DC Load Controller Design

1:02

Determining the mode.

Thinking deeply about your request.

Considering tool usage for planning.

Planning the user request.

Working on your request.

Focusing on requirements capture.

Your goal is to turn this ESP32 reference design into a compact 24 V DC PWM load controller with the interfaces and sensing you listed.

I’ve created the plan to:
1. Update power for 24 V input and ESP32 regulation
2. Add BTF3050TEATMA1 PWM load drivers and screw terminals
3. Add JST switch, sensor, and conditioned analog inputs
4. Add Qwiic OLED and compact layout constraints

Click Start on the plan bar to begin.

Plan

#Goal

Modify the existing ESP32-WROOM-32E reference design into a compact 24 V DC PWM load controller. Use the ESP32 to control high-current DC loads (3 A to 10 A) with BTF3050TEATMA1 output drivers while integrating multiple external interfaces including screw-terminal style load connectors, JST-connected momentary switches, I2C OLED over Qwiic, a presence sensor input, a nearby TO-92 temperature sensor, and additional conditioned analog inputs via JST connectors.

#Implementation plan

System Functional Review & Architecture Update
1. Update the project description to include the 24 V load control requirement and high-current handling for DC loads (3 A to 10 A).
2. Revise the power supply stage to ensure 24 V is routed properly for load driving while protecting the ESP32’s 3.3 V supply.
Load Control and Output Stage
1. Add BTF3050TEATMA1 output drivers configured to handle PWM switching for 3 A to 10 A load control.
2. Connect the 24 V input directly to the output load path, ensuring proper current paths and protection elements are in place.
3. Integrate compact screw-terminal style connectors for load/output connections.
User Inputs and Sensing Integration
1. Add three momentary switch inputs via JST connectors. Define their connections to GPIOs on the ESP32 with debouncing elements if necessary.
2. Add an input for a presence sensor and properly signal condition it for digital or analog reading by the ESP32.
3. Place a TO-92 temperature sensor near the BTF3050TEATMA1 output drivers for local temperature monitoring.
**Display and Additional Analog Inputs
1. Set up an I2C connection via a Qwiic connector for interfacing with an OLED display.
2. Integrate additional analog inputs on JST connectors. Include necessary signal conditioning networks (e.g., filters, attenuation) before routing them to the ESP32 ADC.
Schematic and Layout Verification
1. Validate the revised schematic connections and ensure that the power, control signals, and sensor routes meet design criteria.
2. Update the PCB layout ensuring that the compact design plan accounts for the 24 V load, proper spacing for high-current tracks, and placement of sensors near their respective stages.

#Success criteria

The schematic accurately reflects a 24 V PWM load controller with integrated BTF3050TEATMA1 drivers and all required external interfaces.
The design includes properly conditioned sensor inputs and an OLED I2C connection, along with clearly defined load connectors and momentary switch inputs.
Compact board design with correct placement for high-current routing and sensor integration, ensuring manufacturability and operational reliability.

39 days

wtrammell

Start with that plan

39 days

flux

0:50

Thinking deeply about your request.

Working on your request.

Summarizing requirements steps.

You want to proceed with the plan for the compact 24 V ESP32 PWM load controller.

The plan is ready to execute.
Click Start on the plan bar to begin the work.
If you want, I can still revise it before execution, for example:
- number of PWM outputs
- number of analog inputs
- exact JST/screw connector preferences

Plan

#Goal

Modify the existing ESP32-WROOM-32E reference design into a compact 24 V DC PWM load controller. Use the ESP32 to control high-current DC loads (3 A to 10 A) with BTF3050TEATMA1 output drivers while integrating multiple external interfaces including screw-terminal style load connectors, JST-connected momentary switches, I2C OLED over Qwiic, a presence sensor input, a nearby TO-92 temperature sensor, and additional conditioned analog inputs via JST connectors.

#Implementation plan

System Functional Review & Architecture Update
1. Update the project description to include the 24 V load control requirement and high-current handling for DC loads (3 A to 10 A).
2. Revise the power supply stage to ensure 24 V is routed properly for load driving while protecting the ESP32’s 3.3 V supply.
Load Control and Output Stage
1. Add BTF3050TEATMA1 output drivers configured to handle PWM switching for 3 A to 10 A load control.
2. Connect the 24 V input directly to the output load path, ensuring proper current paths and protection elements are in place.
3. Integrate compact screw-terminal style connectors for load/output connections.
User Inputs and Sensing Integration
1. Add three momentary switch inputs via JST connectors. Define their connections to GPIOs on the ESP32 with debouncing elements if necessary.
2. Add an input for a presence sensor and properly signal condition it for digital or analog reading by the ESP32.
3. Place a TO-92 temperature sensor near the BTF3050TEATMA1 output drivers for local temperature monitoring.
**Display and Additional Analog Inputs
1. Set up an I2C connection via a Qwiic connector for interfacing with an OLED display.
2. Integrate additional analog inputs on JST connectors. Include necessary signal conditioning networks (e.g., filters, attenuation) before routing them to the ESP32 ADC.
Schematic and Layout Verification
1. Validate the revised schematic connections and ensure that the power, control signals, and sensor routes meet design criteria.
2. Update the PCB layout ensuring that the compact design plan accounts for the 24 V load, proper spacing for high-current tracks, and placement of sensors near their respective stages.

#Success criteria

The schematic accurately reflects a 24 V PWM load controller with integrated BTF3050TEATMA1 drivers and all required external interfaces.
The design includes properly conditioned sensor inputs and an OLED I2C connection, along with clearly defined load connectors and momentary switch inputs.
Compact board design with correct placement for high-current routing and sensor integration, ensuring manufacturability and operational reliability.

Add input protection

Specify output count

Define analog channels

Review current issues

39 days

GPIO36

CC1

USBDP

USBDN

ESP_TX

USBDP

CC2

ESP_IO0

USBDN

CC1

USBDP

USBDN

ESP_RX

USBDN

USBDP

CC2

GPIO39

USBDN

ESP_EN

USBDP

Capacitance

10uF

Capacitance

10uF

Capacitance

0.1uF

Capacitance

0.1uF

Capacitance

0.1uF

VBUS

Resistance

10kΩ

+3V3

Resistance

5.1kΩ

+3V3

Resistance

1kΩ

Resistance

5.1kΩ

+5V

VBUS

+5V

+3V3

PWR

Capacitance

10uF

USB1

Capacitance

10uF

IC1

Reviews

Ground
A common return path for electric current. Commonly known as ground.
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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
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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
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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
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1.5M
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
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15.8k
Terminal
An electrical connector acting as reusable interface to a conductor and creating a point where external circuits can be connected.
natarius
RMCF0805JT47K0
47 kOhms ±5% 0.125W, 1/8W Chip Resistor 0805 (2012 Metric) Automotive AEC-Q200 Thick Film #forLedBlink
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1.2M
875105359001
10uF Capacitor Aluminum Polymer 20% 16V SMD 5x5.3mm #forLedBlink #commonpartslibrary #capacitor #aluminumpolymer #radialcan
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1.2M
CTL1206FYW1T
Yellow 595nm LED Indication - Discrete 1.7V 1206 (3216 Metric) #forLedBlink
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1.1M

Project Name

ESP32-WROOM-32E Reference Design

Description

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 #simpleEmbedded #espressif #template .

Properties

License

creativecommons.org/licenses/by/4.0/

Pricing & Availability

Distributor	Qty 1
Arrow	$0.29–$0.86
Digi-Key	$1.05–$10.12
LCSC	$5.45–$6.19
Mouser	$1.71
TME	$0.00
Verical	$0.37–$0.95

Controls

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