Wearable Emergency Bracelet Design

0:18

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Project

Below is an updated table row that includes the connection between the SIM card holder and the SIM800L:

Table

From Component & Pin	Connection Description	To Component & Pin	Net Name / Note
J1 – SIM Contacts	Connect SIM card interface signals (VCC, data, clock, and ground as specified in the SIM800L datasheet)	SIM interface pins on SIM800L module	SIM_CARD_INTERFACE – Ensure voltage levels and signals follow the SIM800L requirements

Note:

Verify the SIM800L module datasheet to match the SIM card holder pinout with the SIM interface.
Include any necessary passive components (like resistors for pull-ups) or level translators as recommended by the datasheet.
This connection offers a way to insert a SIM card via J1 that will interface with your SIM800L module for GSM communication.

Use this additional connection along with the earlier wiring table to complete your schematic connections in Flux.

VCC_NETs

DATA_NETs

CLK_NETs

355 days

Ready.

connect all components

lohith100

@copilot connect all components

11mo

copilot

To connect the components in your project, we'll need to understand the purpose of your circuit. Here's a possible way to connect them based on their functionalities:

Power Supply

Battery Management and Charging with the BQ24075RGTT:
- Connect $U4:IN$ to your external supply voltage source.
- Connect $U4:BAT\_1$ and $U4:BAT\_2$ to the battery.
- Connect $U4:VSS$ to the ground.
- Connect $U4:OUT\_1$ and $U4:OUT\_2$ to power other components like $U1$ , $U2$ , $U3$ , and $BZ1$ .

MCU (Microcontroller)

NRF52832-QFAB-R:
- Connect $U1:VDD$ to the output of the power supply ( $U4:OUT\_1$ or $U4:OUT\_2$ ).
- Ground all VSS pins by connecting them to your common ground.

GSM Module

SIM800L:
- Connect $U2:VCC$ to the power source (e.g., from $U4:OUT\_1$ ).
- Connect $U2:GND$ to the ground.
- Connect $U1:RXD$ to $U2:TXD$ and $U1:TXD$ to $U2:RXD$ .

GPS Module

L80-R:
- Connect $U3:VCC$ to the power supply.
- Connect $U3:GND$ to the ground.
- Connect $U1:RXD$ to $U3:TXD1$ and $U1:TXD$ to $U3:RXD1$ .

Buzzer

Buzzer (BZ1):
- Connect $BZ1:VCC$ to the power source.
- Connect $BZ1:GND$ to the ground.
- Connect $U1:P0.00$ or any GPIO pin to $BZ1:IN$ for control.

Switch

Push Button (B3FS-1050P):
- Connect $SW1:P1$ to a GPIO pin on $U1$ , and $SW1:P2$ to ground.

Please adjust connections according to your specific requirements, especially power due to the anticipated current drawn by components like SIM800L. Let me know if there's anything else you'd like to modify or clarify!

11mo

BZ1

VCC

SDIO

SW1

switch

VCC

SWDCLK

VCC

Reviews

Ground
A common return path for electric current. Commonly known as ground.
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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
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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
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Embarrassed Jade R2-D2

Controls

Properties

Availability & Pricing

Distributor		Qty 1
	Arrow	$4.17–$36.58
	Digi-Key	$5.82–$97.05
	LCSC	$18.22
	Mouser	$4.63–$7.10
	Verical	$0.56–$6.80

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Schematic