James Eastham

I finally took the plunge and picked up a Mac. I'm recording a brief diary of pros/cons from my journey:  Mac Impressions Diary

It's often useful to have a flashing LED in embedded systems to verify the system is 'running' and healthy. I coded up a 500ms h...

It's 40 year old technology, but it still pretty cool and complex. I'm working to realize the PDP-8 minicomputer from the early 70s ...

I designed a state machine controller using VHDL. This state machine implemented a parallel adder and multiplier with overflow capability. T...

I designed a temperature controlled voltage source. This design uses a discrete BJT operational amplifier design with a AD222100STZ temperat...

Modeling temperature behavior in LTSpice. I'm working on a temperature controlled amplifier using a thermocouple and operational amplifi...

Filters are used in a wide variety of electronic applications. Band-pass filters are used in the field of telecommunications for speech proc...