All Questions
-1
votes
0answers
19 views
charging multiple Android tablets at once (up to 12 units)
We're having problems charging multiple 7" Android tablets at once through a multi-port USB hub. We have two 7-port USB hubs from Belkin charging 4 Android tablets on each hub. Some seem to be ...
-2
votes
0answers
12 views
Is there any way possible to ensure the arduino board I purchase will work with my robotic rover?
I would like to connect an arduino board to a 4-wheeled robotic rover but I'm not sure if ANY arduino board would work with ANY rover. How do I know if both are compatible with each other?
Is there ...
2
votes
1answer
27 views
hierarchy of op-amps choice for class use
I saw mentioned in another question that a 741 is one of the worst designs. An LM324 is also pretty low-end.
Is there a better low-end operational amplifier for the money?
I would just appreciate ...
1
vote
1answer
14 views
Amplifying RTD signal to fit ADC range
I'm trying to hook up my 3 wire PT100 RTD probe to an Arduino, but end up out of my depth when it comes to the whole op amp circuit design. I have stolen the 1mA current source and wire compensation ...
-1
votes
0answers
37 views
My computer shut off when I plugged the microphone plug in the wrong slot
I was rushing and I accidentally plugged my microphone jack in my USB slot, and then my computer blacked out and I had to take out the battery and clean it before it even turned back on. I was ...
-3
votes
0answers
21 views
PC/104 AC/DC power supply board [closed]
I understand it would not be suitable to ask vendor information on this site but as I am a pretty novice in this field, I have a problem with finding a single PC/104 AC/DC power supply unit over web.
...
-2
votes
0answers
29 views
How to calculate wight and power usage in datacenter [closed]
I'm interested what is the best way to calculate the total weight of racks in datacenter. I also want to calculate the power usage.
Is there any special formula for that?
6
votes
1answer
68 views
Designing Pick-and-Place-friendly CAD library parts
I'm working on a PCB design with surface mount components to be manufactured by a PCB assembly shop. I'm using CADSTAR, and I had to populate the library with some components, from scratch. I'm new to ...
0
votes
0answers
45 views
20x20 RGB LED Matrix
I've been wanting to start a project with the following requirements:
Be able to display a static image, composed of 19x19 RGB pixels.
Be small (in the region of 3-20cm along one side)
and ...
0
votes
2answers
37 views
controlling a 8051 microcontroller through bluetooth
My teacher wants to add Bluetooth communication to the electronic project in are school. He asked me to check out the possibility.
I tried googling, but I couldn't find anything I was sure about.
I ...
-1
votes
0answers
38 views
Communicating from an Arduino to an iPad [closed]
I just joined a project that is making an app on the iPad, communicate through Bluetooth to an app on a mac to communicate through Bluetooth to an Arduino taking in sensor data and possibly giving ...
0
votes
0answers
30 views
How do you balance which interconnection networks to use when trying to design a multi-processor system that does matrix multiplication?
We are currently learning about doing matrix multiplication in parallel processors that have local memory and use interconnection networks (like Clos networks, Benes, etc..) to pass data to each ...
6
votes
3answers
103 views
For a lower voltage drop one could use Schottky diodes, but what are the disadvantages of Schottky's?
In other words, why don't we always use Schottky diodes if they are so much better? What diode properties do Schottky diodes have that makes them unfit for certain applications?
-1
votes
3answers
146 views
What are the pros/cons of C and C++?
What would be the pros and cons of using C++ over C for uC (AVR) programming ?
0
votes
1answer
67 views
Loop is executing infinite times
I am working with an ATmega32-A microcontroller. Using USART communication, I am displaying data on monitor and am using switch case to select different commands. In one of the commands I have written ...
