The RGB - World's Most Advanced eParrot

[YHB]

I bought the R3-ATmega328/CH340G but the USB is a micro version and not the printer type USB - is this an issue?

[ketel3]

One more isue,the shield has 2 versions.
see below the page of robotdyne
1 shows assembled
1 shows semi assembled

Even more confusion the assembled one is cheaper 
The semi assembled is not available
 I think they made a mistake and reversed the price for both.
I ordered the assembled one now but I think I will get the semi assembled one,I hope only the pins and connectors has to be mounted,otherwise I have a problem 
cheers K3

[Edwin Croissant]

I bought the R3-ATmega328/CH340G but the USB is a micro version and not the printer type USB - is this an issue?

No, personally I dislike the printer type as it is so big. My favorite is the mini, easier to insert, but the micro works as well.

One more isue,the shield has 2 versions.
see below the page of robotdyne
1 shows assembled
1 shows semi assembled

Even more confusion the assembled one is cheaper 
The semi assembled is not available
 I think they made a mistake and reversed the price for both.
I ordered the assembled one now but I think I will get the semi assembled one,I hope only the pins and connectors has to be mounted,otherwise I have a problem 
cheers K3

The semi assembled dat logger shield got a yellow dot, probably as it is not in stock. Maybe they only got assembled ones and if you order one without the headers (if that's the difference) they have to desolder the headers, and the labor is added to the cost.

I always buy through AliExpress as they accept iDeal.

[ketel3]

No, personally I dislike the printer type as it is so big. My favorite is the mini, easier to insert, but the micro works as well.

The semi assembled dat logger shield got a yellow dot, probably as it is not in stock. Maybe they only got assembled ones and if you order one without the headers (if that's the difference) they have to desolder the headers, and the labor is added to the cost.

I always buy through AliExpress as they accept iDeal.

Thanks Edwin ,in that case I'm safe 

[ShiFu]

Today I will add the third sensor to my RGB eParrot - the new one will alert me if the product condenser is too hot.

To do this I'll add a DS18B20 for the Condenser and connect it to Pin 6.
I'll keep the DS18B20 for the Boiler connected to Pin 7. (no change)
And I'll keep the DS18B20 for the Vapor connected to Pin 8. (no change)

Two jumpers from GND to A0 and A1 will still be needed to disable the boiler pressure alarm.
(A0 is the input pin for the pressure sensor and A1 disables the alarm)

The Arduino sketch has the Condenser alarm temperature set to 60C and if the temperature rise more than one-half a degree per second it will also trigger the alarm.

The RGB - World's Most Advanced eParrot
condenser alarm code.png (31.17 kB. 350x144 - viewed 1515 times.)

[YHB]

Edwin / Shifu

You may have addressed this before and I have missed it - But - The library installed is OneWire No Resistor - but you are still using a resistor.

Can you clarify.

[ShiFu]

I completely missed that, YHB!

My RGB eParrot seems to be running fine with BOTH a 4700 Ohm Plus the 10,000 Ohm resistance from the internal software resistor.

I looked over some googled information from here and there and it certainly seems that the added 4700 Ohm resistor is unnecessary. I'll back-annotate this thread to reflect the resistor is unnecessary after someone builds a resistorless RGB eParrot.

[Eucyblues]

A read of this post may assist

http://eparrot.org/index.php/topic,126.msg1510.html#msg1510

Basically - if you have a long(ish) lead with a high capacitance you're likely to run into problems without the resistor, and even with the 4.7k resistor unless you provide power to the cable - and if you provide power you need the resistor.
 
Eb

[YHB]

I'll back-annotate this thread to reflect the resistor is unnecessary after someone builds a resistorless RGB eParrot.

OK, I volunteer. My shields have just arrived so I will miss off the 4K7's and see what happens.

Toodlepip

[Edwin Croissant]

For cables shorter then 3 meters the internal pull-up is enough. Not for the Mega though, you still need a 4k7 resistor. I think that the best place for the resistor is near the sensor. One thing I noticed is when the resistor is on the circuit board that a disconnected supply wire will make the sensor read a fixed temperature of 85 C.

Ed   

[ketel3]

Maybe the pull up resistor depends on the kind of hardware ,my 1 wire network running for years 3 temp sensors and a lightning detector with cables upto 18 meter long without the resistor all works fine.


For those in Europe looking for a housing for the eparrot I found some one in Belgium that makes the housing with the files produced by Jeff.
It is not cheap but I found no one elso that came near his price,or was willing to make it.
€19,50 + €7,50 shipping if some body is interrested just pm me as I do not want to post his mail and details here.
I have no commercial connection with him other than that I purchased a eparrot housing.
Cheers K3

[YHB]

OK, I volunteer. My shields have just arrived so I will miss off the 4K7's and see what happens.

I assembled mine without the aid of a resistor and everything is fine.

[YHB]

For those in Europe looking for a housing for the eparrot I found some one in Belgium that makes the housing with the files produced by Jeff.
It is not cheap but I found no one elso that came near his price,or was willing to make it.
€19,50 + €7,50 shipping

That is a lot better price than I could find locally, I am sure that it is a good price for people who are making these professionally but my labour is free and I have a very sharp file .

[ketel3]

Yes that is a fact, you can make a housing easy , as I did  over the years . in this case the problem are the buttons.
The housing I can make easy but the buttons,you can  add simple extra  buttons and solder wires to the existing ones,but to be honest I LIKE Jeffs enclosure?

This fine design deserves a nice enclosure so in this case I make a exeption and pay the price 

[YHB]

but to be honest I LIKE Jeffs enclosure?

So Do I 

[Edwin Croissant]

While impatiently waiting for by boards to arrive I made the BMP280 I2C address detection automatic.
Cleaned up some code and gave the boiler pressure it's own screen.
The use of a differential pressure sensor also allows for vacuum detection and alarm 
To be continued.....

Edwin

[ShiFu]

Can I get more details please on the boiler pressure sensor, Edwin?
I don't see much to choose from where I live and they cost over $100 USD.

[Edwin Croissant]

I bought this MPXV7002DP Airspeed Sensor Breakout Board from Module Fans for about 9 euro plus 2 euro shipping. It's a differential pressure sensor and can measure up to 20 cm water column both pressure and vacuum. Mainly used in airspeed sensors for model planes. The end of the wires have Dupont connectors.
The silicone hose I use for testing is 2 mm id. and 4 mm od.

[ShiFu]

Thanks Edwin.
I'll try to find one.

[ketel3]

Edwin,can you shows up a example of the data log ?
Are this  shown as graphs , or tekst , I have no idea about it.
Rgds K3