All Questions
0
votes
1answer
17 views
RAM and MMU requirement in ARM 11
ARM 11 is based on Powerful ARMv6 instruction set architecture.
But I am not able to figure out if it has;
1-MMU
2-Sufficient RAM for porting Linux
Can someone enlighten me?
1
vote
0answers
11 views
RFID based listening device
i was just trying to make a passive cavity resonator based listening device just the same way as Leon Theremin did (the great seal bug)... i know that i am to use metallized mylar film as the ...
0
votes
1answer
9 views
Audible noise in DC-DC buck converter
In my design, I have a +3.3V SMPS that provides power to digital circuits (microcontroller, EEPROM, etc.). The microcontroller allows applying a 100Hz PWM signal with variable duty cycle and with an ...
0
votes
0answers
16 views
I am looking for an equation that expresses Vout in terms of Vin
simulate this circuit – Schematic created using CircuitLab
0
votes
1answer
15 views
Pickit 3 and PIC18F46J53
I have connected Pickit3 and the above TQFP PIC microcontroller on a PCB and connected the respective pins to it. I have checked for short circuits between pins and found none. What could be the ...
0
votes
0answers
27 views
DIY Drone helicopter communication
I'm pretty new to electronics, though i know how to program.
Have been playing with the Arduino UNO board, with success of some sensors and motors etc.
My next challenge is being creating a drone ...
0
votes
0answers
21 views
What is “VDCI” in terms of output voltage?
I am trying to bring back an old monochrome plasma screen from the dead. I have little information on the device, its from a Compaq Portable (Luggable) III PC. The manual for the unit lists power ...
3
votes
2answers
48 views
I need help to design circuit thaat measure the speed of sound in concrete
I need a circuit to measure the speed of sound in concrete to 1us or better. This is for a school demonstration where students who study construction will use this circuit to measure the speed of ...
0
votes
0answers
25 views
MAC Address Registration
I can't understand the wierd pricing of IEEE MAC address:
A 12bit IAB is $645, getting you 4096 addresses.
While a 24bit OUI is only $1,885.
I notice alot of companies buy multiple 12bit IAB's, ...
1
vote
1answer
17 views
Frame Size and Function
With regards to Ethernet frames, the typical maximum size is 1500 bytes. Jumbo frames brought this up to 9000 bytes, and there was even some Super Jumbo Frames of sizes larger than that.
What factors ...
1
vote
2answers
34 views
Wood workbench as ESD protection?
ESD protection are really expensive for hobbyist like me.
I have a grounded wrist strap but do you think a simple non-treated wood workbench surface can replace a really expensive ESD tabletop ?
0
votes
1answer
32 views
How to safely convert 120VAC from a lamp bulb socket to 12VDC [on hold]
For the holidays, I'd like to make my chandelier light up with different colors. There are all sorts of cheap RGB LED strips that, via remote, allow the user to program patterns of lights.
These ...
0
votes
1answer
22 views
Looking for some solar panels to go with this project
I've been looking around for some solar panels for a little homemade solar phone charger project. I recently found a portable phone charger project from a student at Cal Poly which I'm hoping I can ...
0
votes
0answers
17 views
Applying Transmission Line Theory To Plane Waves
I'm working on a project for my E&M class. Our goal is to use transmission line theory to design a "stealth" dielectric layer for some sort of aircraft. I can assume the radar wave is incident ...
0
votes
4answers
76 views
Understanding Electrical Engineering with Analogies
Understanding concepts with analogies help can be a useful technique and hopefully this will help me better understand electricity and Electrical Engineering better.
Lets start with a simple water ...
