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1  Using Arduino / Programming Questions / Re: Jumping back to "void loop();"? on: September 20, 2014, 10:29:52 pm
You can always  rely on,
return;
to take you back to the start of the loop function.
2  Using Arduino / General Electronics / Re: First benchtop oscilloscope, what specs matter? on: September 19, 2014, 10:17:16 pm
Multiple channels are usually used for comparison for example SPI, I2C etc. so 1G/500Meg is OK.
When looking for glitches, you usually use one channel and maybe the external trigger.
A 2G Sample scope using one channel only is just fine.
3  Using Arduino / General Electronics / Re: First benchtop oscilloscope, what specs matter? on: September 19, 2014, 12:11:30 pm
Quote
You're going from a DSO quad to a DS4034?
Going from a 100 MHZ, 2 channel analog scope to the 4 channel 350MHZ (front end) digital storage DS4034.
Will keep the 30 pound analog scope as a boat anchor.

4  Using Arduino / Microcontrollers / Re: What is the best method to making a custom PCB Arduino uno shield? on: September 18, 2014, 10:31:31 pm
I recommend these.
https://www.sparkfun.com/products/11665
http://www.dipmicro.com/store/index.php?act=viewCat&catId=524

See
http://www.gammon.com.au/forum/?id=11109
And
https://m.youtube.com/watch?v=7a3dA4r8rxc
5  Using Arduino / General Electronics / Re: Need Suggestions for Extending Approximately 40 Wires within 1 larger Wire on: September 18, 2014, 10:14:37 pm
You could use wire wrap wire.
30 gauge.

But I like the idea of flat cable and using IDC connectors.
There is a spiral wrap that can be purchased from electronic suppliers.
https://www.elecdirect.com/catalog/tubing-loom-spiral-wrap
And:
here
6  Using Arduino / General Electronics / Re: First benchtop oscilloscope, what specs matter? on: September 18, 2014, 09:42:52 pm
Agreed, time for storage scope.
I'll probably order the Rigol DS4034 next week.
Like the idea of segmented memory and 140meg memory with 4G samples
7  Using Arduino / General Electronics / Re: First benchtop oscilloscope, what specs matter? on: September 18, 2014, 01:00:53 pm
This just came up for sale, free shipping over $99.00
HERE
8  Using Arduino / General Electronics / Re: Simple waveform gen for oscilloscope practice? on: September 18, 2014, 12:59:16 pm
Jim looks like you are having way too much fun.
9  Using Arduino / Networking, Protocols, and Devices / Re: Serial buffer size problem on: September 18, 2014, 12:49:19 am
The Atmega 1284 has 16K ram maybe you should look at using it.
Bobs version of the Ardweeny using a 1284 might be a good choice or his Bobuino2.


10  Using Arduino / General Electronics / Re: Not all breadboards created equal on: September 17, 2014, 11:32:22 pm
Yes, I can take about one per week  smiley-eek
11  Using Arduino / Sensors / Re: Debounce occasionally missing signal on: September 17, 2014, 08:29:10 pm
Please show all of your sketch.
12  Using Arduino / Project Guidance / Re: Ground connection to analog input in Arduino Uno ? on: September 17, 2014, 05:48:24 pm
Quote
Please tell me how to filter out negative voltages from the sine wave generated by a signal generator ?
If your generator has a DC offset adjustment you can use it.
13  Using Arduino / General Electronics / Re: Not all breadboards created equal on: September 17, 2014, 12:01:05 pm
One point, if it dosen't oscillate on the bread board then it more than likely not oscillate on your PCB.  smiley-wink

I have used a bread board at 20MHZ with no problems but obviously it depends on the circuit.
Also, if it works on the bread board, it may not work on a PCB as you may have to add capacitance to your PCB circuit to get an oscillator design to work.

I guess the point is be aware the capacitances are there and they will effect your circuit (pro or con).
Also the long hook up wires used in a breadboard design will act as caps or inductors/antennas.
14  Using Arduino / General Electronics / Re: Not all breadboards created equal on: September 17, 2014, 11:06:27 am
Jim:
See eevblog investigation into capacitance and the breadboard:
https://m.youtube.com/watch?v=6GIscUsnlM0
15  Using Arduino / General Electronics / Re: First benchtop oscilloscope, what specs matter? on: September 16, 2014, 11:36:45 pm
Grumpy, what did you buy?
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