Schematic for presence-sensing-esp32-c3: A presence sensing device...

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Can you connect the relay to the esp32. so the esp32 can use one of it's pins to...

d4zenl

@copilot Can you connect the relay to the esp32. so the esp32 can use one of it's pins to switch mains power

copilot

Absolutely! Let's assume you'll be using GPIO5 to control the relay, specifically the relay module that you have labeled as K1. Here's how you can connect the relay to the ESP32 to switch mains power.

I am assuming the relay operates with 3.3V for the control signal since you are using an ESP32, which operates on 3.3V logic levels.

Connections

Relay Control Signal:
- Connect ESP32_C3:IO5 to K1:1 (Assuming K1:1 is the control pin for the relay).
Relay Power Supply:
- Connect a 5V power supply (which should be suitable for your relay if it's a typical relay module) to K1:2 (VCC).
Relay Ground:
- Connect GND to K1:3 (GND).
Relay Common and Normally Open/Closed Contacts:
- Connect the common terminal (usually labeled COM or C) of the relay to the load (e.g., appliance).
- Connect the Normally Open (NO) or Normally Closed (NC) terminal to either the mains live wire or the neutral, depending on how you want to control the switching.

Connection Format

Here's the specific connection format:

Control Pin: Connect U1:IO5 to K1:1.
Power Supply (assuming VCC 5V): Connect VCC 5V:P1 to K1:2.
Ground: Connect GND to K1:3.

Example Schematic Snippet

Plaintext
ESP32      -----> K1
  VDD 3V3   |      |   // power
            |      |   // control signal
  GND       |------|   // ground
            |      |
  IO5 ------|-> IN |   // control signal from ESP32
  // Connect ESP32 U1:IO5 to K1:1 for control
  // Connect VCC 5V:P1 to K1:2 for power
  // Connect GND to K1:3 for ground

Please make sure to double-check your relay module's datasheet to confirm the correct pins for power, ground, and control.

Would you like me to generate a more detailed explanation or any other connections you might need?

Resistance

5.1k Ω

Boot

Resistance

100k Ω

GPIO9

GPIO8

Capacitance

10u F

VBUS

Resistance

10k Ω

VDD 3V3

VCC 5V

GPIO19

U0TXD

GPIO2

Resistance

5.1k Ω

U0RXD

VBUS

GPIO18

Reviews

Electrical Rule Checks

Missing Footprints

Reports components that need a footprint but don't have one.

Design Rule Checks

Overlapping Copper • 4

Des	Net	Des	Net
C3:P1	GND	PS1:3	None
C3:P2	Net 2	PS1:3	None
U3:S	Net 15	PS1:5	None
U3:G	Net 28	PS1:5	None

Invalid Layer

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Component Overrides

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Airwires • 35

	Designators	Net
	C6:P1, U2:VSS	GND
	U1:GND, U1:GND	GND
	Via-Island-2:Via-Island-2, C3:P1	GND
	C2:P2, C1:P2	Net 1
	C5:P2, C6:P2	Net 1
	C5:P2, R1:P2	Net 1
	C6:P2, R4:P1	Net 1
	R5:P1, R4:P1	Net 1
	U1:3V3, C2:P2	Net 1
	U1:3V3, R1:P2	Net 1
	U2:VOUT, R5:P1	Net 1
	R1:P1, C3:P2	Net 2
	R1:P1, Reset:P3	Net 2
	U1:EN, C3:P2	Net 2
	U1:IO2, R5:P2	Net 6
	U1:IO5, K1:1	Net 11
	C4:P1, D5:K	Net 15
	U2:CE, U2:VIN	Net 15
	U2:CE, U3:S	Net 15
	U2:VIN, D5:K	Net 15
	U1:IO8, R4:P2	Net 16
	U1:IO9, Boot:P3	Net 17
	J1:CC1, R2:P1	Net 20
	D2:A1, J1:D+	Net 21
	J1:D+, J1:D+	Net 21
	U1:IO19, D2:A1	Net 21
	R3:P1, J1:CC2	Net 22
	D3:A1, D4:A	Net 25
	D4:A, J1:VBUS	Net 25
	D1:A1, J1:D-	Net 27
	J1:D-, J1:D-	Net 27
	U1:IO18, D1:A1	Net 27
	D4:K, D5:A	Net 28
	R6:P1, D5:A	Net 28
	R6:P1, U3:G	Net 28

Layers with Multiple Fills

Reports layers that have multiple copper fills of different nets. Make sure the Connected Layers rule value of nets with fills is valid.

Floating Copper

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Protected Intrusions

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Manufacturing

Manufacturer Part Number • 13

	Designator	MPN
	C1	None
	C2	None
	C3	None
	C4	None
	C5	None
	C6	None
	J1	None
	R1	None
	R2	None
	R3	None
	R4	None
	R5	None
	R6	None

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Ground
A common return path for electric current. Commonly known as ground.
jharwinbarrozo
20.5M
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
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
A generic fixed resistor for rapid developing circuit topology. Save precious design time by seamlessly add more information to this part (value, footprint, etc.) as it becomes available. Standard resistor values: 1.0Ω 10Ω 100Ω 1.0kΩ 10kΩ 100kΩ 1.0MΩ 1.1Ω 11Ω 110Ω 1.1kΩ 11kΩ 110kΩ 1.1MΩ 1.2Ω 12Ω 120Ω 1.2kΩ 12kΩ 120kΩ 1.2MΩ 1.3Ω 13Ω 130Ω 1.3kΩ 13kΩ 130kΩ 1.3MΩ 1.5Ω 15Ω 150Ω 1.5kΩ 15kΩ 150kΩ 1.5MΩ 1.6Ω 16Ω 160Ω 1.6kΩ 16kΩ 160kΩ 1.6MΩ 1.8Ω 18Ω 180Ω 1.8KΩ 18kΩ 180kΩ 1.8MΩ 2.0Ω 20Ω 200Ω 2.0kΩ 20kΩ 200kΩ 2.0MΩ 2.2Ω 22Ω 220Ω 2.2kΩ 22kΩ 220kΩ 2.2MΩ 2.4Ω 24Ω 240Ω 2.4kΩ 24kΩ 240kΩ 2.4MΩ 2.7Ω 27Ω 270Ω 2.7kΩ 27kΩ 270kΩ 2.7MΩ 3.0Ω 30Ω 300Ω 3.0KΩ 30KΩ 300KΩ 3.0MΩ 3.3Ω 33Ω 330Ω 3.3kΩ 33kΩ 330kΩ 3.3MΩ 3.6Ω 36Ω 360Ω 3.6kΩ 36kΩ 360kΩ 3.6MΩ 3.9Ω 39Ω 390Ω 3.9kΩ 39kΩ 390kΩ 3.9MΩ 4.3Ω 43Ω 430Ω 4.3kΩ 43KΩ 430KΩ 4.3MΩ 4.7Ω 47Ω 470Ω 4.7kΩ 47kΩ 470kΩ 4.7MΩ 5.1Ω 51Ω 510Ω 5.1kΩ 51kΩ 510kΩ 5.1MΩ 5.6Ω 56Ω 560Ω 5.6kΩ 56kΩ 560kΩ 5.6MΩ 6.2Ω 62Ω 620Ω 6.2kΩ 62KΩ 620KΩ 6.2MΩ 6.8Ω 68Ω 680Ω 6.8kΩ 68kΩ 680kΩ 6.8MΩ 7.5Ω 75Ω 750Ω 7.5kΩ 75kΩ 750kΩ 7.5MΩ 8.2Ω 82Ω 820Ω 8.2kΩ 82kΩ 820kΩ 8.2MΩ 9.1Ω 91Ω 910Ω 9.1kΩ 91kΩ 910kΩ 9.1MΩ #generics #CommonPartsLibrary
jharwinbarrozo
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 10,000uF 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 20pF 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
A generic fixed inductor for rapid developing circuit topology. *You can now change the footprint and 3D model at the top level anytime you want. This is the power of #generics
jharwinbarrozo
15.1k
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
jharwinbarrozo
1.2M
875105359001
10uF Capacitor Aluminum Polymer 20% 16V SMD 5x5.3mm #forLedBlink #commonpartslibrary #capacitor #aluminumpolymer #radialcan
jharwinbarrozo
1.2M
CTL1206FYW1T
Yellow 595nm LED Indication - Discrete 1.7V 1206 (3216 Metric) #forLedBlink
jharwinbarrozo
1.1M

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presence-sensing-esp32-c3

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Distributor		Qty 1
	Digi-Key	$11.73–$12.28
	LCSC	$28.97–$29.07
	Mouser	$11.80

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