Free 8052 Microcontroller Based Projects

  
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Personal Safes are revolutionary locking storage cases that open with just the touch of your finger. These products are designed as `access denial` secure storage for medications, jewelry, weapons, documents, and other valuable or potentially harmful items. These utilize fingerprint recognition technology to allow access to only those whose fingerp
Free 8052 Microcontroller Based Projects - schematic

rints you choose. It contains all the necessary electronics to allow you to store, delete, and verify fingerprints with just the touch of a button. Stored fingerprints are retained even in the event of complete power failure or battery drain. These eliminates the need for keeping track of keys or remembering a combination password, or PIN. It can only be opened when an authorized user is present, since there are no keys or combinations to be copied or stolen, or locks that can be picked. k eeping track of keys or remembering a combination password, or PIN. It can only be opened when an authorized user is present, since there are no keys or combinations to be copied or stolen, or locks that can be picked. In this article we are going to learn how to send data to a microcontroller and make the microcontroller respond to the data. For simplicity we are just going to send data to turn on and off an LED which is connected at port P2. 0. So lets start off with designing a communications protocol. From VB we will send an ASCII 255, as a synch byte, and the on/off state (0 or 1). The microcontroller will wait for two (2) bytes of data. After these two bytes of data are received, it will then either switch on/off the LED Now that the form is set up and ready to go, we need to start adding our code to the project. The user will select a pin state from option button, and then click cmdSend to send the data to the microcontroller. So...



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