Tagged Questions

-9
votes
1answer
67 views

Circuit Diagram Controller [closed]

I want to make a circuit diagram which will: Read the speed of a servo Divide the speed of servo With the result of the division will be controlled the speed of an other motor like this: Servo ...
-3
votes
2answers
95 views

where to begin learning PC board designing [closed]

can someone please guide the correct path to learn board designing for computers. being specific i am just keen to design a SBC(single board computer) just for hobby purposes my current knowledge is ...
1
vote
4answers
119 views

9-Bit State Machine

I am working on a state machine that will drive a state bus for a personal project. The state machine will have an output pattern like the following: ...
2
votes
1answer
204 views

Need help with identifying diodes in a 1970s automotive circuit

I have an old ignition module from a 1978 W116 model Mercedes-Benz, and I'm trying to "reverse engineer" it. The original circuit diagram is not available to mere mortals, so I have made one based on ...
1
vote
0answers
97 views

What is this program called and where can I learn about it?

I've seen a video of someone who created an intelligent waste bin. It could catch objects you threw at it by observing thrown objects with Kinect and driving at the location of impact (YouTube). He ...
2
votes
2answers
356 views

How to remove 20MHz SPI signal noise?

I did some SPI software configuration for my DSP board. Then I soldered several missing 0 ohm resistors onto the board so I can tapping the SPI signal from pin headers. Then I measured the SPI Chip ...
2
votes
1answer
395 views

transferring raw schematic to breadboard and PCB

i have some schematic from TINA pro, pspice, orcad and the lite. Is there a way to automatically convert it into a both breadboard and PCB layout. This is a bright idea since it will save time. What ...
1
vote
1answer
205 views

Should Shielding GND be isolated from circuit GND?

In my system, I have 3 Grounds: DGND, AGND and Shielding GND, What steps should I take to isolate shielding ground from the other grounds that exist? Should I connect them with ferrites or use some ...
2
votes
1answer
245 views

Should I use pull up resistors in this configuration?

I am interfacing a 3.3V FPGA to a 5V DSP. I am using this bidirectional voltage transceiver: http://www.nxp.com/documents/data_sheet/GTL2000.pdf In the diagram in page 4 they're using pull up ...
1
vote
2answers
156 views

Recommended placement and routing of an RC Low pass filter

What are the recommended placement and routing techniques for the following RC low pass filter circuit: I made an initial placement and routing that's shown below: Actually it's randomly placed ...
-3
votes
1answer
248 views

Masters of Science (MSc) for a PCB Design Engineer [closed]

I am a PCB Designer with 1.5 years experience (2010 grad) and I want to join a Masters of Science program to improve my knowledge in my field of work. Is it necessary to join a masters program? or ...
2
votes
1answer
388 views

How do I calculate the proper width of a copper trace based on a given gauge (AWG) of wire?

I am designing a PCB which I will etch at home, but I need to know how to convert a wire gauge into the proper corresponding width of a copper track on the PCB. Is there a standard formula for this?
10
votes
2answers
658 views

How to transmit high current (2.6A) with low voltage (1.2V) for a long distance?

I want to supply a DSP with 1.2V. This DSP needs 2.6 Amps of current at full load. The minimum supply based on the electrical specs of this DSP is 1.16V, which means that the maximum voltage drop ...
2
votes
1answer
1k views

Connecting a sata cable to a usb hard drive circuit board

I am trying to connect a USB harddrive to a sata cable by attaching the sata cable to the drive circuit board and only using the usb to power the drive. This is for data recovery. For reference I am ...