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Hi! Can the OLED module in my schematic be powered with 3v3 ?

mekicaman

@copilot Hi! Can the OLED module in my schematic be powered with 3v3 ?

copilot

Hello! The OLED module you have, referred to as OLED1, has a pin labeled as "5V" for power. This typically indicates that the module is designed to operate at 5 volts.

Powering it with 3.3V might not provide enough voltage for the display to function correctly or at full brightness. However, some OLED modules can work with a slightly lower voltage, but it significantly depends on the specific module and its internal power regulation.

To be sure, I recommend checking the datasheet of the specific OLED module you're using to see if it supports 3.3V operation. If it does not, you'll need to supply 5V to the OLED1. Let me know if you need help with anything else!

copilot

The MPU-6050 is a 6-axis motion tracking device that typically operates within a voltage range of 2.375V to 3.46V. Therefore, it can be powered directly from a 3.3V supply, which is a common voltage level in many projects featuring microcontrollers like the ESP32-S3-WROOM-1-N8R8.

If you have further questions about your project or need help with connections, feel free to ask!

mekicaman

Can you tell me the MPU 6050 how much volt it requires ?

mekicaman

Will the OLED work with 3v3 insted of 5 ?

copilot

The specific OLED module's datasheet or documentation will tell you if it can operate at 3.3V instead of 5V. However, many OLED modules, especially those designed for hobbyist and DIY use, often have some flexibility in their operating voltage range.

Here's a general guideline:

Check the Datasheet: Look for the operating voltage range. If it includes 3.3V, then it should work fine.
Module Specifications: Some modules come with an onboard voltage regulator allowing them to work with both 3.3V and 5V. If yours has this feature, it might be fine to use it at 3.3V.
Brightness and Performance: If the module does indeed work at 3.3V, it might operate at reduced brightness or responsiveness compared to when it's powered with 5V.

In your current project setup, the OLED module's power pin is labeled "5V." If this module is designed to operate at exactly 5V and does not support 3.3V, powering it with 3.3V will likely result in insufficient power for proper operation.

Would you like any further assistance in this context? If you provide more details on the OLED module, I might be able to give more accurate advice!

mekicaman

Examine the curcuit for some errors please

copilot

Certainly! Let's go through the key parts of your schematic to identify any potential issues or areas of improvement:

General Observations

Power Supply:
- Ensure that all components requiring specific voltage levels are correctly connected. For instance, the ESP32-S3-WROOM-1-N8R8 should be powered by 3.3V, and ensure that the 3.3V rail is capable of sourcing enough current for all connected components.
MPU-6050 Connections:
- Ensure that the I2C lines ( $U3:SCL$ and $U3:SDA$ ) are pulled up to 3.3V using resistors typically in the range of 4.7kΩ to 10kΩ.
ESP32 Connections:
- Ensure all necessary pins for operation, such as $U1:EN$ , are correctly configured. Frequently, the EN pin is pulled up to keep the ESP32 enabled.
Battery Management (TP4056):
- Verify proper connections for power input and charging outputs and ensure that components like $U5:PROG$ are correctly set with resistors to determine the charging current.
OLED Module:
- For connections related to $OLED2$ (power, SDA, SCL), ensure they match the device's specifications for power and signaling.
Switches:
- Check that switches are correctly debounced if needed and ensure they are connected as expected. Their connections to pins like I/O ports of the ESP32-S3-WROOM-1-N8R8 should be verified.

Specific Recommendations

Check Ground Connections: Ensure all components have a common ground net connection.
Decoupling Capacitors: Ensure decoupling capacitors are present and properly rated (e.g., 100nF) on voltage supply lines near microcontrollers and ICs.
Unused Pins: Make sure unused pins on the ESP32 and other ICs are handled according to their datasheets (pulled high/low or left floating as required).
Net Name Conflicts: Ensure there are no conflicting net names, especially around the power and ground nets.
Voltage Levels: Confirm there is no logic level mismatch between components, especially when interfacing 3.3V and 5V devices.

If you have particular connections or sections you'd like more detail on, let me know! If any specific structures or sections of the schematic appear out of place or incorrect, please provide more details so I can assist further.

3V3

IO14

GDO2

IO12

Res

Bat

Resistance

10kΩ

C10

Capacitance

0.1uF

RES

Capacitance

1uF

SW3

Reviews

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 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
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
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
An electrical connector acting as reusable interface to a conductor and creating a point where external circuits can be connected.
natarius
RMCF0805JT47K0
General Purpose Thick Film Standard Power and High-Power Chip Resistor 47 kOhms ±5% 0.125W, 1/8W Chip Resistor 0805 (2012 Metric) Automotive AEC-Q200 Thick Film Features: - RMCF – standard power ratings - RMCP – high power ratings - Nickel barrier terminations standard - Power derating from 100% at 70ºC to zero at +155ºC - RoHS compliant, REACH compliant, and halogen free - AEC-Q200 compliant
jharwinbarrozo
1.2M
875105359001
10 µF 16 V Aluminum - Polymer Capacitors Radial, Can - SMD 30mOhm 2000 Hrs @ 105°C #commonpartslibrary #capacitor #aluminumpolymer #radialcan
jharwinbarrozo
1.2M
CTL1206FYW1T
Yellow 595nm LED Indication - Discrete 1.7V 1206 (3216 Metric)
jharwinbarrozo
1.1M

Project Name

ESP Smart Watch

Description

Welcome to your new project. Imagine what you can build here.

Properties

Properties describe core aspects of the project.

Pricing & Availability

Distributor	Qty 1
Arrow	$9.05–$13.71
Digi-Key	$25.30–$32.10
LCSC	$16.50–$18.39
Mouser	$23.04
Verical	$9.13–$14.40

Controls

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mekicaman / ESP Smart Watch

Schematic