Category Archives: Uncategorized

GPS error

Towards my goal of entering the AVC competition in 2014, I have been evaluating GPS units. The current model I am looking at is a u-Blox LEA-6H with a patch antenna. The first test I tried was to hold the … Continue reading

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Roving Networks RN-42

Over the weekend I took a side trip with my AVC processor to include a wireless BlueTooth transceiver. This will allow me to communicate with the robot as I run various experiments. It turned out to be fairly easy.

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GPS survey

Last week sometime, Sparkfun announced next year’s AVC competition. I am sooooooo far behind schedule it is not funny. By now I had hoped to have sensor data I could use for simulations. I had wanted an ARM processor up … Continue reading

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GPS Error

I started to experiment with GPS positional error. I placed a Trimble Lassen IQ receiver in the shadow of my house. Most the the satellites vehicles (SV) in the south are masked. I logged position data all night and loaded … Continue reading

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Swamped at work

Having to take a small break from the fun stuff as I am swapped at work. Hope to be back in a week.

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Power meter design-2

I think I decided that the easiest and simplest solution to the chip select problem is to use a small PIC processor to receive a serial data block with the address that the master processor wants to talk to. If … Continue reading

Posted in Home Energy Monitor, Projects, Uncategorized | 6 Comments

Power Monitor design issue

I still have a few minor issues to work out with the ADE7763, but now I have my eyes back to the system design. I need to figure out how to build 30+ of the sensors and connect them up … Continue reading

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ADE7763 Part-4

I got a few minutes to work on the ADE7763 energy monitoring chip. Now that I am confident in the SPI interface, I started to look at the functioning of the chip itself. I started with the test of having … Continue reading

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ADE7763 for energy monitor

Stumbled across the Analog Devices ADE7763 IC. It is a chip dedicated to single phase energy monitoring. It has inputs for current and voltage sensors. The chip takes these values, computes the RMS values, takes the product, and integrates it … Continue reading

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Server crash (2.0)

Memory tests passed. Smartd tests on all drives pass. Connected oscilloscope to Power_Good signal that the power supply sends to the motherboard. There is an occasional glitch on the line. Perhaps the glitch gets a bit bigger at times causing … Continue reading

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