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    What is the difference between MAX7219 and 74HC595 ?

    What is the fundamental difference between a Maxim MAX7219 and a 74hc595? Other than pin count they appear to do the same thing. I have both types so which one would be the best to use in a multiple temperature led display. Each display would be 4 digits with one to the right of the decimal...
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    Is it just me or.....?

    Seems like this site has evolved quite nicely lately. The new manuals and command explanations are great and the create commands for making a circuit on a PC board are pretty darn nice too. The ability to snip a bit of code and place it in your program is a real time saver and eliminates a lot...
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    New project!!!!!!

    Starting a new project soon and need a bit of input. I would like to monitor the temps in 4 different vessels and have an alarm sound and flash the 7 segment display to indicate a temp is out of the set range. I would also like to run a 115 VAC pump on a demand on/off switch, a water line...
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    critique my first attemp please

    Here is my first attempt at micro controller programming and it seems to be very slow. I realize it is incomplete at the very end, but getting there seems to take excessively long even when overclocked at 8MHZ. I am using analog inputs on ADC0 and 1 and a digital proximity sensor switch tied...
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    Making code fit the screen questions? Need help.

    Ladies and gents, I am trying to post a code set that I have been working on, but cannot make the code box narrow enough to be able to read the code and remarks. If I copy the code from PE using the right click, select all and copy commands, it is way to wide to be usable on the forum, since it...
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    I am so Jacked!!!!

    Assembled my first on board power supply from a Spark Fun kit today (PRT-00114), and the darn thing worked on the first try. Found the 4.94 and 3.29V first try, and all of the switches and LED's worked perfectly. It's a mini regulated 5V board for powering TTL +5 volts onto the breadboard. I...
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    Maximum allowed output voltage on Pic 18X

    I have re-read the data sheet on the CHI035 board numerous times and have been unable to find a max allowable voltage for the output side of the FET board. The data sheet suggests 12 volts in the example at 1 amp, but I would like to use 24 volts at 1 amp for a project I am working on...
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