An escape room is a real-life adventure game where you pay to be locked in a room filled with puzzles and given a limited time (usually 60 minutes) to solve the puzzles with your team in order to escape the room. There are also virtual video game escape rooms.
A smart home links together home comfort, entertainment, appliances, thermostats, lighting, and other electronic devices in a home together such that they can be controlled by voice, gesture, computer, or phone. Apple, Amazon, and other companies are trying to bring myriad smart home products from different manufacturers together through the Echo and HomeKit, respectively.
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OrCAD 17.2 Manuals:
When calculating the resistance value for your current limiting resistor there are a few variables to consider. First, what is the supply voltage that will be applied to the LED? Second, what is the forward voltage of the LED you chose? Third, what is the amount of current you want to flow through your LED? By answering these questions, you will be able to calculate the value for the resistor. To begin the process, you must know what supply voltage you will be giving the LED. Whether its 12V, 5V, or 3.3V this value is important to the calculation of the resistance. The next piece of information that is needed is the forward voltage for the particular LED that is being used. To find this information you must reference the datasheet for the part. The forward voltage can be found in the Electrical Characteristics section of the datasheet. Shown below is an image of the forward voltage for an Osram LED:
Microcontrollers make wonderful “brains” for embedded systems, but are severely limited in the amount of current they can supply to an external device. In order to determine the amount of current a microcontroller can supply (or sink) with an output pin, open the data sheet and look for the section describing “Absolute Maximum Ratings”. There, there should be a specification described as the maximum current for a single GPIO pin (see example, Figure 1).
UART is one serial protocol used for communicating data between two digital devices (e.g., between the Pioneer Kit and the computer).