Recent content by StrykerTECH

Use PeakFinder: http://www.mathworks.com/matlabcentral/fileexchange/25500 This is a function that I had good results with on a recent signal processing project.

Connecting all 8 output pins together to drive a single load introduces a host of problems. Putting diodes on each output pin, as Floid suggests, would be a good way to protect the card from this type of use. You may find it easier to just connect 1 output pin to a 5V relay. Or you could...

Oh thanks, I forgot to hit the attach button.

Here's a nice case study on piezoelectric material for power generation using bicycle vibration. This article provides the mathematical modeling that relates piezoelectric displacement with electrical energy.

This looks correct, assuming the memory location 100 contains the value 3055.

The reverse saturation current (Is) for a diode is typically modeled as I = Is * (e^(V/(nVt)) - 1). This model is applicable to LEDs only for very low forward currents. For forward currents above a few mA, the ohmic losses in the LED must be included to accurately model the forward voltage. You...

The easiest way to go about doing this is to just use an off the shelf USB data acquisition device. Otherwise if you need the sensors to connect to your sound card, consider using an analog multiplexer IC to cycle between each sensor and interleave the analog data onto a single output line...

Did you ever end up finding a one line circuit diagram of a real world plant with a photovoltaic system? I’m currently working on a research project with some similarities to this and a real world example would be useful.

Your looking for a thermopile. A thermopile looks kind of like a peltier plate. It's composed of an array of thermocouples that output electricity when they are exposed to heat.

My initial reaction is that you should use a DPDT relay instead. One pole for the motor, the other pole for the brake.

I'm an electrical engineer with a PE license. If you’re considering it, I would definitely recommend taking the FE exam. Your professional engineering license will stay on your resume for your entire career. A professional engineering license is needed for some electrical controls engineering...

Bloons TD 4 is the best.

If you’re trying to maximize switching speed, just replace the BJT with a MOSFET and eliminate the base resistor. A very common fet such as 2N7000 will have a maximum turn on time and turn off time of 10ns.

A few observations: 1. The high side P-channel fets in your schematic are upside down. The source pins should be connected to VCC (12V) and drain is connected to the motor. 2. Your schematic depicts N-channel fets on the high side. But since you indicated you’re using P-channel on the...

Using C for your embedded software will improve portability and maintainability of your code. Knowing the details of the hardware architecture is generally not important. However, the one (and by far most relevant) architectural aspect to keep in mind is choosing data types for variables...