- Desk Clock
- FIRST LEGO League
- Furnace Monitor
- Home Energy Monitor
- Lightning detector
- Pololu 9DOF IMU
- Product reviews
- Rigol DS1102D
- Robotic DVD burner
- RS232 Shifter
- Sailboat Race Timer
- Vectronix DMC
Category Archives: Uncategorized
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.
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
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
Having to take a small break from the fun stuff as I am swapped at work. Hope to be back in a week.
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
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
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
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
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
Over the last few weeks, I have noticed that my Linux based file server will randomly reboot. The first time I noticed it I did not give it much thought, but now it happens about once a day.