The ESP32 keeps finding new jobs in my house.

You might think, "I'm worried about the durability of 3D-printed gears." Certainly, they cannot compete with metal gears. However, for robot prototypes and hacking applications, the performance is ...

Many of us electronics hacker types tend to have at least the same common equipment on our benches, namely a multimeter, an oscilloscope, some sort of adjustable power supply, and maybe a logic ...

Cutting foam with a hot wire is a common technique to shape foam in a wide variety of shapes. If you want to cut something ...

The Raspberry Pi Pico is a microcontroller development board powered by the custom RP2040 chip. With its dual-core ARM Cortex-M0+ processor, extensive GPIO pins, and built-in programmable I/O (PIO), ...

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To measure the motion of wheels by odometry, two rotary encoders of 20P P R 20 P P R (pulse-per-revolution) are coupled to each reducer shaft of the motors. To operate the motors, a dual motor driver ...