46 replies to this topic

[Omar (OZ)]

I really should pay more attention to the methods that are available in each class. I wrote my one code to do that recently.

Same here! I copied the map method from the arduino reference page.

[Omar (OZ)]

We have two updates in the works:

v4.1.0.3 (patch 3):
* Minor updates to deployment/reboot code

v4.1.1.0 (first feature update)
* SD card mounting, file system support
* Expanded PWM support (ability to set clock times, etc.)

A few other things that we're working on:
* Networking capabilities
* Drivers for a number of shields

Chris

Is it possible to get a double from input pin? I feel like an integer is not good precision, or is it already possible?

[Chris Walker]

Is it possible to get a double from input pin? I feel like an integer is not good precision, or is it already possible?

The AnalogInput (ADC) is 10-bit, so you'll get 0-1023. If you'd like to translate that to a range of doubles, you can do something like this:

// assume a desired range of 0.00 - 100.00
double value;
analogInput.SetRange(0, 10000);
value = (double)((double)analogInput.Read() / 100)

Chris

[Omar (OZ)]

The AnalogInput (ADC) is 10-bit, so you'll get 0-1023. If you'd like to translate that to a range of doubles, you can do something like this:

// assume a desired range of 0.00 - 100.00
double value;
analogInput.SetRange(0, 10000);
value = (double)((double)analogInput.Read() / 100)

Chris

Yeah, I should have thought of that, as always thanks for the help

[xc2rx]

We have two updates in the works:

v4.1.0.3 (patch 3):
* Minor updates to deployment/reboot code

v4.1.1.0 (first feature update)
* SD card mounting, file system support
* Expanded PWM support (ability to set clock times, etc.)

A few other things that we're working on:
* Networking capabilities
* Drivers for a number of shields

Chris

Hi Chris,

It would be very helpful if you could create a new thread and list out every bug found + future patches in progress and which bug/feature will they fix/have. That way it wouldn't be a surprise when a programmer discover a bug and have to report it.

I know you have a thread that sort of list what each patch fixes when you roll it out but would be great if you could list out future patches/found bugs too.

Thanks!

[Hai Nguyen]

I really should pay more attention to the methods that are available in each class. I wrote my one code to do that recently.

Hi,
How do you get the analog sensor to work any sample driver? I wrote driver for sharp distance sensor and for some reasons the reading remains unchanged.

Thanks!

[Chris Walker]

How do you get the analof sensor to work any sample driver? I wrote driver for sharp distance sensor and for some reasons the reading remains unchanged.

Hi Hai,

Can you share your code? Also, which analog pin(s) are you using?

Chris

[Hai Nguyen]

Hi Hai,

Can you share your code? Also, which analog pin(s) are you using?

Chris

Chris,

Here are my wiring, I will update this post with code and photo tonight.

A0->Sensor's Vo
3.3v->Sensor's Vcc
GND->Sensor's GND

code has been removed due to it may trigger legal issue -Hai

Thanks!

[Chris Walker]

Here are my wiring, I will update this post with code and photo tonight.

A0->Sensor's Vo
3.3v->Sensor's Vcc
GND->Sensor's GND

Hai,

Did you attach the AREF pin to the 3.3V header too? If there's not an analog reference, the analog values will probably all read at their maximum value...

Chris

[Hai Nguyen]

Chris, You mean connect like this?

Attached Files

•  Untitled.jpg   52.45KB   30 downloads

[greg]

Chris,
You mean connect like this?

Yup, but see Chris' below. I wasn't looking at that, just the AREF link!

[Chris Walker]

Chris,
You mean connect like this?

Hai,

You have the sensor connected to digital pin 0 (D0), not analog pin 0 (A0).

Chris

[Hai Nguyen]

Oop! That was just my mistake on my drawing, I was too concern about the beauty aspect of the drawing and forgot about the technical aspect of it. I will try that out tonight. Updated image. By the way, just for my understanding, -What is the AREF pin for and why do I have to cross-connect analog pin to this to get work correctly? -Where else AREF pin is required when working with Netduino? Thanks! Thanks Chris.

[Hai Nguyen]

Chris I hook it up the way suggested but still didnt see any change on the reading. Any other thought? Thanks!

[Chris Walker]

-What is the AREF pin for and why do I have to cross-connect analog pin to this to get work correctly?
-Where else AREF pin is required when working with Netduino?

The AREF pin is "analog reference." The analog readings use this as their "maximum voltage" reading. You can make it anything between 2.7V and 3.3V, but basically it helps ensure good readings for your analog sensors.

Chris

[Chris Walker]

I hook it up the way suggested but still didnt see any change on the reading. Any other thought?

Hai,

AnalogInputs are pretty straightforward, but let's see what else we can find...

1. Can you take a photo of your setup? Just so we can eliminate any obvious questions...
2. Do you have a multimeter? If so, what is the reading on the analog input wire (a) not attached to the Netduino; ( attached to the Netduino?

Chris

[Hai Nguyen]

Hai,

AnalogInputs are pretty straightforward, but let's see what else we can find...

1. Can you take a photo of your setup? Just so we can eliminate any obvious questions...
2. Do you have a multimeter? If so, what is the reading on the analog input wire (a) not attached to the Netduino; ( attached to the Netduino?

Chris

Here is the image, I have multimeter I will post reading result soon

Attached Files

•  DSC_0032.JPG   477.46KB   32 downloads

[Chris Walker]

Hai,

Your AREF is not connected in that photo.

Could you please run your test under the two scenarios that follow?
[a] connect the 3.3V line to the AREF pin in addition to your sensor
[b] if that doesn't work, disconnect the wire from the the RESET line and the wires from analog 1 and analog 2

Chris

[Hai Nguyen]

Hai,

Your AREF is not connected in that photo.

Could you please run your test under the two scenarios that follow?
[a] connect the 3.3V line to the AREF pin in addition to your sensor
[b] if that doesn't work, disconnect the wire from the the RESET line and the wires from analog 1 and analog 2

Chris

Chris,
Oop, careless mistake I thougth that was AREF pin for some reasons. all three sensors work fine now

Thanks very much for your helps

[Chris Walker]

Glad all is well for you now. I can't wait to see your project evolve!