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Ah of course. That makes sense. The max current pull is very small in the tens of milliamp, no more than 100mA. I'm sure this connector will be suitable. Thank you.

This may come across as a stupid question, but I'll see what I get anyway. I am looking at connectors for my circuitry in which the battery will connect to. The battery is 1100mAh (1.1Ah) and the connector I'm interested in has a rating of 1A. Immediately I can see that the battery output is...

Thanks for this, I think this is the site where I got my image from! I was a little cautious as I don't know this company nor the China seller, what's your experience with them? Don't want to start sending money over to a null company!

Hi all, Sorry if this is in the wrong forum, but I really need to find some Swiss machine header pins, but at a right angle. I know they exist, I've seen a few Chinese companies showing images, but cant see how to purchase from them. Can't find them on Digikey or other large component...

Here is the second file (only let me upload one file per post).http://files.engineering.com/getfile.aspx?folder=e2f4c715-da46-4d2c-a822-275f55c3793f&file=data02.txt

Sorry for the delay in response. First of all, the microphone does have a good response down that low, it was specifically chosen for that reason (Knowles SPU1410). I've uploaded a couple csv files with some data attached. I've done some FFT on the data and on a tap while wearing the sensors...

Hi Mike, thanks for posting. I think you're right about the harmonics. I've tried a lot of filters now, and even created manual sine waves with frequencies I know, and the filters (for the best part) seem to be working. I'm trying some other methods now, such as smoothing the data to try and...

I'm hoping someone will be able to tell me why no filtering is helping in my application. I have a MEMS microphone monitoring the pressure of a small chamber, which has a membrane stretched over the far end. This device is placed on a human muscle and when I flex said muscle the membrane is...

Nope, example question in course notes, with the answer given, just not sure how they got there. Answer is 14.23V.

I have, what I'm sure is a very simple circuit, and I need to determine Vout from the design attached. I'm sure I have to do superposition and use a potential divider, but I can't seem to get the answer given. Anyone that can push me in the right direction? Cheers

Had never thought about using an Arduino, actually could work very well with a BT shield! I could connect to the IMU using the Arduino, leave it idle and collecting packets, then use the main device to start/stop collection of the data off an analogue pin.

I was hoping someone could direct me towards a device or suggestion to solve a problem of mine. I have an inertial measurement unit which can collect and transmit its data via Bluetooth. Normally I'd have this communicating with a laptop which would have either a Bluetooth dongle or built in...

Thanks, guys. I was under the impression the values were correct, just a bit of a delay for the capacitor to charge. The simulation in Multisim isn't fantastic, but it'll do (certainly doesn't run in real-time, that's for sure...).

I'm trying to design a pre-amplifier for low frequencies. I'm specifically interested in 2-200Hz. I'm fairly sure I have the right design, just the values of the components must be wrong. Having done some math, I'm under the impression that my circuit should work for my frequencies, but...

What parameters? What more do you need to know? I've stated I'm interested in measuring rotation angles. It's as simple as that. At this time I don't know resolution but am merely asking for suggestions on technologies that could be up to the job. An IMU will be strapped to a pendulum arm and...

Thanks for the links, asimpsons, but I'm British and I don't think the American site would be all that fast for me. I'm generally using Farnell and RS. This looks very promising: http://uk.farnell.com/bourns/eaw0j-b24-ae0128l/encoder-rotary/dp/9358234 I'll have to do the calculations and see...

Hi all, Sorry for the delay in response, wasn't working yesterday. Lots of good suggestions, thanks all for that. I've looked into hall effect sensors, which look promising, but unfortunately due to magnetometers on-board the IMU (although I'm currently not using them at the moment, they will...

Cheers for the response, guys. Basically I'm actually using the pendulum as a 'golden standard' to determine how accurate some IMU's I have are. So using gyro/accelerometers wouldn't make for a very good comparison. I've been looking at mechanical methods for determining the angle as my mind...

I need to know the type of component I should use to determine the rotation of a shaft. Basically, I'll be building a pendulum which will hang down at 0' (due to gravity) with an axle at the top of it where I'll also mount the sensor (basically I'll look like the face of a clock with only one...

No worries, all solved now.