Making a self-balancing robot using Arduino

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Two-wheel self-balancing robots are pretty cool and could be challenging to make for beginners. Joop Brokking describes the build process of his amazingly stable self-balancing robot in a video tutorial posted below. The robot uses two stepper motors for precise motion that is controlled by an Arduino board. The angular inclinations data are derived using a MPU6050 gyro/accelerometer. You can download the design files and firmware from Joop’s website. Joop’s YouTube video tutorial is posted below:

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Portable power supply with built-in batteries

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Most of the bench power supplies we use derive power from the main AC supply. ThomasVDD presents his Arduino-controlled smart power supply with built-in battery backup so that you can use it anywhere without an AC outlet. It not only delivers precise output, but is also controllable via PC over an USB port. Key Features Constant voltage and constant current modes Uses a low noise linear regulator, preceded by a tracking preregulator to minimize power dissipation Use of handsolderable components to keep the project accessible Powered by ATMEGA328P, programmed with Arduino IDE PC communication via Java application over micro USB Powered

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A DIY GPS tracking device for hikers

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A handy GPS tracker designed by woytekm for tracking and recording your hiking trips on a microSD card. It also features a Nokia 3310 LCD for showing current GPS position, altitude, track length, track duration and time. More details of the design are found at the author’s Github page. This device does not provide any map or direction info. It just shows GPS position, altitude, track length, track duration and current time. Track data is written to micro SD card as GPX file. Nothing too ingenious, but still quite handy if you like to gather the data on your hike. Thanks to large

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Arduino controlled autonomous cooler

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This Arduino-powered autonomous cooler follows you to the park or beach by connecting to your smartphone via Bluetooth, and is also GPS-enabled to self-navigate. The electronics is powered by a 5V power supply, whereas a 3s LiPo battery is used to power the motors. Controlled with an Android App, the cooler also features motorized lid that can be opened through the App. A HC-05 Bluetooth module was mounted at the front of the platform for better range. The rest of the components including a L298N motor driver, PAM-7Q GPS, and HMC6883L compass were mounted inside and connected to the Arduino through the breadboard.

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