Shared Projects by MorganS

Uses AH1392 magnetic sensor to switch a LiPo battery on and off with a magnet pointed either up or down. Power consumption when off is not zero so a small battery will last weeks, not months. Optional USB charging circuit. Maximum battery voltage 7V. Best battery is 1S LiPo.

Parts List:

OPTIONAL battery-charging circuit

This is a 9-degree-of-freedom (accelerometer/gyro/magnetometer) inertial measurement unit (IMU) utilizing the LSM6DSV320 chip which can measure up to 320g acceleration (20 times more than most other chips) as well as a LIS2MDL magnetometer.

Breadboard compatible breakout for LP5810 PWM LED driver

Ball-grid-array version.

I2C control for up to 4 outputs in a truly tiny package!

D0-D3 can be any LED in 0603 size or you can substitute 0603 resistors as pullups to use this as a general-purpose PWM driver. C1 should be 0.1uF. J1 (not labelled on PCB) is a QWIIC connector for the popular I2C interconnect system.

This can be hand soldered without a stencil. Will probably need a hotplate for the BGA chip.

Breadboard compatible breakout for LP5810 PWM LED driver.

I2C control for up to 4 outputs in a tiny package!

D0-D3 can be any LED in 0603 size or you can substitute 0603 resistors as pullups to use this as a general-purpose PWM driver. C1 should be 0.1uF. J1 (not labelled on PCB) is a QWIIC connector for the popular I2C interconnect system.

This can be hand soldered without a stencil. If you need a soldering challenge, try the BGA version of this PCB which can be soldered on a hotplate or maybe even with hot air.