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The first Arduino board based on an ARM processor. Features 2 channel 12-bit DAC, 84 MHz clock frequency, 32-bit architecture, 512 KB flash and 96 KB SRAM. Unlike most Arduino boards, it operates on 3.3 V and is not 5 V tolerant. Arduino Yún [21] ATmega32U4, [22] Atheros AR9331 16 MHz, 400 MHz Arduino 68.6 mm × 53.3 mm [ 2.7 in × 2.1 in ]
These circuits are often used in robotics and other applications to allow DC motors to run forwards or backwards. [1] The name is derived from its common schematic diagram representation, with four switching elements configured as the branches of a letter "H" and the load connected as the cross-bar.
If no such path exists, the output is false (0), and the "coil" by analogy to electromechanical relays is considered "de-energized". This analogy between logical propositions and relay contact status was established by Claude Shannon. Ladder logic has contacts that make or break circuits to control coils.
A reference designator unambiguously identifies the location of a component within an electrical schematic or on a printed circuit board.The reference designator usually consists of one or two letters followed by a number, e.g. C3, D1, R4, U15.
Arduino and Arduino-compatible boards use printed circuit expansion boards called shields, which plug into the normally supplied Arduino pin headers. [55] Shields can provide motor controls for 3D printing and other applications, GNSS (satellite navigation), Ethernet, liquid crystal display (LCD), or breadboarding (prototyping).
Similarly, an input buffer, relay or opto-isolator is often used to translate an otherwise incompatible signal (e.g., high voltage) to the logic levels required by a GPIO. Integrated circuit GPIOs are commonly used to control or monitor other circuitry (including other ICs) on a board.
Arduino RS232 Serial board - a predecessor with an ATmega8. The Arduino project started at the Interaction Design Institute Ivrea (IDII) in Ivrea, Italy.At that time, the students used a BASIC Stamp microcontroller, at a cost that was a considerable expense for many students.
A motor controller is a device or group of devices that can coordinate in a predetermined manner the performance of an electric motor. [1] A motor controller might include a manual or automatic means for starting and stopping the motor, selecting forward or reverse rotation, selecting and regulating the speed, regulating or limiting the torque, and protecting against overloads and electrical ...
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