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Recent content by Pheetuz

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    AT32UC3C FLASHC Problem

    Hi Folks, I am trying to use the Flash Controller in the AT32 series of devices but not having a lot of luck - I have tried using the demo project but that only works intermittently (like very intermittently) occasionally setting the correct memory locations but most of the time doing nothing...
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    USB Signal Problems on Prototype

    Hi folks, I am working on a project that involves bootloading over USB using a homemade design based upon the Teensy arduino board. I am sure that my processor is working, however, when I connect the board via USB and open the windows device manager there is an unknown device there with error...
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    FreeRTOS AT32UC3C0512 vs AT32UC3A0512

    Hi folks, Been a while since I've posted on here :) I have inherited a project based around the AT32UC30512 processor from Atmel and am looking to put FreeRTOS on it. Having a look around I can see that there is a freeRTOS port onto the AT32UC3A0512 which as far as I can ascertain is a slight...
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    RF Distance detection between two objects.

    You're absolutely right, don't know quite where my head was at drawing that! I think that for my needs it will be sufficient to amplify the signal using the mosfet pair, strip off the carrier with an envelope filter arrangement as in the circuit before and then pass the remaining signal through...
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    RF Distance detection between two objects.

    Thanks Brian - very helpful! My reasoning for having the AM signal modulated onto it was that if I do not modulate something on to it and search for that, then any signal at the same frequency would be enough to trick the device into thinking it was still within the perimeter - by modulating...
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    RF Distance detection between two objects.

    Good thinking SunnySkyguy with the human body being used as an antenna! I would like the device to work if it was not on the users wrist as well though, for instance if it was placed in their pocket - so maybe its a bit of a non starter! Nice idea though! I also like chuckeys point about the...
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    RF Distance detection between two objects.

    Thanks for the replies folks :) That's sounds like an interesting project mtwieg. Unfortunately this is not an option for me as I have no means of setting up a perimeter. I understand that if the wrist device were placed inside a fridge or some other kind of faraday cage then it would block the...
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    RF Distance detection between two objects.

    Thanks for the reply FvM. The project is not an optional one unfortunately, otherwise something digital would suit me better :) I understand the issues with determining distance based on the signal strength, however, the actual distance between the objects is not of that much concern to me, if...
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    RF Distance detection between two objects.

    Hi folks, I'm doing a project at university and need a way of detecting when an object leaves a rough perimeter. The project is roughly akin to a house arrest anklet but it needs to be smaller - to fit around the user's wrist. It must detect when the wearer is more than x (say 10 foot) from a...
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    PIC18F97J60 with MCP3301 ADC

    Hi folks, I am using a microchip PIC18F97J60 along with a 13bit MCP3301 A2D which I have connected up to my PICs SPI port, I am sure that the hardware wiring is correct, the input to this A2D is in the form of two unity gain OP amps which are outputting well within the range of the A2D. Whenever...
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    multithread in c++ for fpga communication

    Am I right in thinking that you are collecting data from an FPGA through PCIe onto your PC? Yes what you are asking is certainly possible but having more than a single thread working on performing a task adds all kinds of timing problems in itself, the two threads need to be synchronized to each...
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    Thermistor Circuit Help

    Thanks Sky, I should probably point out that for reasons unbeknownst to me I have to use a Thermistor for the project! Has anyone used a Wheatstone bridge for this and could offer any knowledge on how effective they are?
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    Thermistor Circuit Help

    Hi folks, I am working on a university project and just trying to get some information about whether something that I want to do is viable. Basically I want to measure accurately (to within 1 degree C) over a temperature range of 0-200C, is this possible with a thermistor? I have seen...
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    [SOLVED] PIC18F96J60 Target device ID (00000000).

    Thanks for the info Keith. I figured out what was wrong, thought I would update the post so hopefully no one else will trip over the same problem. The PIC18FxxJxx range operate on a 2.5V core that can either run from an external 2.5V supply or off of an internal regulator, which is used is...
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    [SOLVED] PIC18F96J60 Target device ID (00000000).

    Also, it is worth me pointing out that the ICD is working correctly because it can program and debug my PICDEM2.net board without issues!

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