ATmega328P MPU6050 KiCad

Worked for 7 mins 31 sec

I’m blocked from directly wiring the TP4056 BAT pin to the ATmega +5V rail because the board currently uses a 16 MHz ATmega328P, which requires 4.5–5.5 V at 16 MHz; a 3.7 V LiPo would fall below that.

Recommended safe path:

TP4056 charges the 1-cell LiPo.
Battery output feeds a 5 V boost regulator.
Boost output powers the existing +5V rail for the ATmega and headers.

Alternative low-power path:

Run the ATmega from the raw LiPo/3.3 V rail.
Change the clock from 16 MHz to 8 MHz or lower.
Verify all connected parts are 3.3 V-compatible.

Want me to add the 5 V boost stage and wire the TP4056 + battery path into the existing +5V rail?

dixmyth

i currently bypass vin and wire the + to 5v pins

Thought for 6 sec

flux

That works only if the “+” source is already regulated 5 V.

For a single 3.7 V LiPo:

Do not wire battery + directly to the board’s 5V pins while keeping the 16 MHz ATmega clock.
A LiPo is about 4.2 V full, ~3.7 V nominal, and can fall near 3.0 V discharged.
The ATmega328P at 16 MHz requires 4.5–5.5 V, so raw LiPo power will be out of spec most of the discharge curve.

Safe options:

Best match to your current wiring: LiPo → TP4056 charger → 5 V boost converter → board +5V pins.
Lower-power option: LiPo/raw battery → board rail, but change ATmega clock to 8 MHz or lower and make the MPU/I/O voltage-compatible.

Also note: a TP4056 is a charger only, not a 5 V regulator. Its BAT pin should go to the battery/boost input, not directly to a 16 MHz +5V rail.

Add boost stage

Use 8 MHz

Fix power issues

Pick boost part

Check battery current

Not Recommended for New Designs

U1 PB1_PCINT1_OC1A - Q_SPK G

J_UART 5 - C15 P1

U1 AVCC - C7 P1

U1 AREF - C9 P1

U1 PC5_ADC5_SCL_PCINT13 - J_MPU Pin_3

U1 PB3_PCINT3_OC2A_MOSI - J1 4

U1 PC0_ADC0_PCINT8 - TP_A0 P1

J_SPK 2 - Q_SPK D

U1 PB1_PCINT1_OC1A - Q_SPK G

U1 PB4_PCINT4_MISO - J1 1

U1 PB7_PCINT7_XTAL2_TOSC2 - Y1 3

U1 PD0_RXD_PCINT16 - J_UART 4

U1 AVCC - C7 P1

U1 PC4_ADC4_SDA_PCINT12 - J_MPU Pin_4

U1 PD2_INT0_PCINT18 - R_LED P1

U1 PD0_RXD_PCINT16 - J_UART 4

U1 PB7_PCINT7_XTAL2_TOSC2 - Y1 3

U1 PD6_PCINT22_OC0A_AIN0 - J_BUTTONS Pin_3

U1 PC6_RESET_PCINT14 - R5 P2

U1 PD1_TXD_PCINT17 - J_UART 3

U1 PB6_PCINT6_XTAL1_TOSC1 - Y1 1

U1 PD1_TXD_PCINT17 - J_UART 3

U1 PD5_PCINT21_OC0B_T1 - J_BUTTONS Pin_1

J_SPK 2 - Q_SPK D

U1 PB6_PCINT6_XTAL1_TOSC1 - Y1 1

U1 PB5_PCINT5_SCK - J1 3

GND

U1 GND - C7 P2

J_BUTTONS Pin_4 - J_UART 1

GND

J_BUTTONS Pin_4 - J_UART 1

J_SPK

Q_SPK

J_UART

Reviews

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Project Name

ATmega328P MPU6050 Nano

Description

ATmega328P-based Nano-style board combined with an MPU6050 6-axis IMU sensor, imported from the uploaded KiCad archive for cleanup and verification in Flux.

Properties

Properties describe core aspects of the project.

Pricing & Availability

Distributor	Qty 1
Arrow	$3.17–$4.03
Digi-Key	$1.15
HQonline	$12.55–$12.70
LCSC	$15.79–$16.42
Mouser	$4.44–$4.73
TME	$3.18
Verical	$2.58–$54.44

Controls

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dixmyth / ATmega328P MPU6050 Nano

Schematic