Connecting 80 inputs to a microcontroller – I want to check inputs from optocouplers. How can I multiplex the inputs to a microcontroller? I prefer to use the8051, PIC16f877a, or ATMega. Read more. MCP3428 interfacing – I am using the MCP3428 diferential ADC with a single shot conversion and interface through I2C to my microcontroller. It’s […]
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Serial EEPROM – A Great Form of Non-Volatile Storage
by Jon Wilder Most PIC microcontrollers have some form of non-volatile EEPROM on chip. However, the largest I’ve seen is 1KB available on the 18F series. There are many applications in which we may need a great deal more than this. The Storage You Don’t Have For instance, what if we have a MIDI device […]
How To Monitor I2C Communications Through RS232
by Electro-Tech-Online member languer In the past when requiring to monitor I2C communications between two devices I would use a logic analyzer. Such monitoring was useful to determine if the I2C communications between devices was properly configured. Even though this is quite useful and efficient, it does require a logic analyzer, with an I2C protocol […]