posture correction robot

It's common for computer users to bend over in front of a screen, which can eventually lead to back problems. There are various gadgets on the market that solve this problem by constantly reminding users to sit up straight, but most of them are not fun. So I made a fun little tool for this problem.

Schematic PCB

PixArt PMW3360DM-T2QU: Optical mouse sensor breakout board

PixArt PMW3360DM-T2QU optical mouse sensor breakout board that can operate at 1.8V or 3.3V voltage levels.

Schematic PCB

STR-NCS32100-GEVK: Reference design for ON Semiconductor rotary position sensor NCS32100

Schematic PCB

Reference design of Epson multimeter microcontroller S1C17M02/M03

Can measure DC/AC voltage, DC/AC current, resistance, inductance, capacitance, diode, frequency. Built-in 16bit ADC, digital filter, RMS effective value circuit and peak hold circuit. Multimeter control unit integrated with microcontroller, officially launched reference design kit, powered by button battery, including schematic diagram.

Schematic PCB

MiniQ: a mini quadcopter

MiniQ is a mini quadcopter that is open source from hardware design to control algorithm. The algorithm used for the Altitude Heading Reference System (AHRS) is the DCM complementary filter. The system calculates the height and controls the output PWM of the four motors 1600 times per second. It can be controlled remotely via Bluetooth (Bluetooth Serial Port Profile).

Schematic PCB

A_40_V10 Design based on IPS2 motor commutation sensor

Schematic PCB

A_39_V10 Design based on IPS2 motor commutation sensor

Schematic PCB

A_38_V10 Design based on IPS2 motor commutation sensor

Schematic PCB

A_37_V10 Design based on IPS2 motor commutation sensor

Schematic PCB

A_36_V10 Design based on IPS2 motor commutation sensor

Schematic PCB

A_35_V10 Design based on IPS2 motor commutation sensor

Schematic PCB

A_34_V10 Design based on IPS2 motor commutation sensor

Schematic PCB

A_33_V10 Design based on IPS2 motor commutation sensor

Schematic PCB

A_32_V10 Design based on IPS2 motor commutation sensor

Schematic PCB

A_31_V10 Design based on IPS2 motor commutation sensor

Schematic PCB

A_30_V10 Design based on IPS2 motor commutation sensor

Schematic PCB

A_29_V10 Design based on IPS2 motor commutation sensor

Schematic PCB

A_28_V10 Design based on IPS2 motor commutation sensor

Schematic PCB

A_27_V10 Design based on IPS2 motor commutation sensor

Schematic PCB

A_21_V10 Design based on IPS2 motor commutation sensor

Schematic PCB