frequency-counter-operating
It can measure from 16Hz to 100Hz signals with a maximum amplitude of 15V. The sensitivity is high, the resolution is 0.01Hz. The input signal can be a sine, a square or a triangle waveform.
The counter can be used in many applications. For instance, to observe an oscillator’s accuracy, to measure the mains frequency or to find out the rpm of a motor that is connected to an encoder.
frequency counter circuit [link]
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Layering different simple systems together to perform one complex task is really at the heart of what engineering is all about. In this project we show how it is possible to utilize different technologies and piece them together to controll an inxpensive RC Car, with an iPhone. With the NerdKit serving as the bridge between the computer and the R/C Car, it is as an example of how useful microcontrollers can be when they serve as the glue that makes complex systems work together, and how with an understanding of microcontrollers a neat system like this one is achievable as a Do-It-Yourself weekend project. ..
iPhone-Controlled R/C [Via]
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I started with a PicKit1. After using it for a while I moved on to this PicKit 2 PIC Microcontroller programmer. I have always loved this programmer, having a USB, a button, a couple LEDs, a potentiometer and a seperate ICSP programmer unit. It is also very fast. But, like I’m sure many of you, I quickly out-grew my PicKit2 programmer. There just isn’t enough real-world stuff on it. So I decided to add some. I have included pictures of all the things I added, and you can click on any of them to see an enlarged picture. ..
PicKit 2 PIC Microcontroller programmer [Link]
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This kit combines an LM317 with a thumbwheel potentiometer to allow you to easily set the output voltage from 1.5V up to 2V less than the input.
Features:
dc power supply KIT - [Link]
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