Why pay hundreds for a commercial Data Acquisition System when you can build the PIC DAS for less than $50.00? The PIC DAS is built around a Microchip PIC16C63A microcontroller and contains an 8 bit bidirectional Digital I/O port, 12 bit, 8 channel A/D converter and a 12 bit, 4 channel output D/A converter. It is perfect for quickly controlling any project on your workbench! Use the Digital I/O to sense switch closures with the help from the built-in weak pullups, control OPAMP’s, power supplies and the like with the built-in D/A converters.
Measure temperature or sense voltage or current with the built-in A/D converter. The real usefulness of this system is that it has a known simple to use interface that uses real ASCII commands over an RS232 link. This method of control saves programming time that would otherwise be wasted controlling the test setup, instead of actually doing the test.
PIC Based – Data Acquisition System: [Link]
SAEBRTrack is a low earth orbit (leo) satellite tracking system. It was originally designed to use inexpensive TV antenna rotators, like the “Orbit 360” sold at many hardware stores. However, the author recently modified the code and the hardware to work with the Yaesu G-5500 elevation-azimuth dual controller. The G-5500 certainly is a much better way to go, even with the fairly high price tag.
SAEBRTrack Satellite Tracke: [Link]
The dsPIC30F4012-based Doppler Radar System enables you to track speeding motorists in your neighborhood. The well-designed system generates a microwave energy burst with a 10-GHz transceiver. The microwave signal bounces off of a moving vehicle and the frequency (Doppler) shift is measured to determine its speed.
I must say this is the first DIY Radar system I’ve seen well documented. It’s definitely worth a try if you’re into this kind of projects.
Doppler Radar System Tracks Speeding Vehicles: [Download Project] – [View Project PDF]
Blind Spot is an area of the road that cannot be seen by the driver while looking forward or through either the rear-view or side mirrors. Such Blind Spot Detection System are already present in many cars. In this project the ATmega169 uses a high-intensity infrared light to detect approaching vehicles. Although the system works, i would only recommend you build it for testing purposes, not for long therm use. Why not use it for long therm ? Well no one guarantees that the system would not fail.
Blind Spot Detection System: [Download Project] – [View Project PDF]
I remember when i was a kid, i was just starting with electronics, and i was very curious about this kind of systems. They were present in every contest show on tv. It’s cool that someone developed and published a project like this. The system is controlled by an ATmega88, and the voting pads interconnect trough RS-485. After the voting is done, a Java application that runs on the PC generates bar graphs.
Voting Pads System based on ATmega88: [Download Project] – [View Project PDF]