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Frank Beerens's Content

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#60470 I2C with a display

Posted by Frank Beerens on 20 October 2014 - 07:00 AM in Netduino Plus 2 (and Netduino Plus 1)

Thats why i need someone to help me. I do not have working code or a logic analyzer.




#60462 I2C with a display

Posted by Frank Beerens on 19 October 2014 - 06:04 PM in Netduino Plus 2 (and Netduino Plus 1)

i don't think i will have a problem with the code but more with the hardware connection.

 

I think I2C is not working, is there a simple way to test it ? 




#60400 I2C with a display

Posted by Frank Beerens on 12 October 2014 - 08:26 PM in Netduino Plus 2 (and Netduino Plus 1)

Hi

 

last year i started a project with a display from newheaven on i2c

 

http://www.datasheet...ernational.html

 

But i never got it working.

 

Is there someone who could help me with this ?

(maybe in the netherlands or belgium ?)

 

Frank




#59146 I2C Help

Posted by Frank Beerens on 10 July 2014 - 01:43 PM in Netduino Plus 2 (and Netduino Plus 1)

that is one of them i tried, but also tried an i2c display from newheaven.

 

i'm not home now, so i cannot check which one exactly




#59143 I2C Help

Posted by Frank Beerens on 10 July 2014 - 10:44 AM in Netduino Plus 2 (and Netduino Plus 1)

Hi

 

i'm trying to get i2c up and running with a lcd display. the last half year i did not get it running.

Can someone help me ? If posibele in the Netherlands then i can come over physicaly.

 

Frank




#58406 Help on I2C

Posted by Frank Beerens on 26 May 2014 - 07:10 PM in Netduino 2 (and Netduino 1)

no one who can help me ?




#57975 Help on I2C

Posted by Frank Beerens on 06 May 2014 - 08:34 PM in Netduino 2 (and Netduino 1)

i bought a new netduino and a new display but still the same.

 

can somebody help me ?

 

Some one in the Netherlands or Belgium or Germany which can help me local




#57719 Help on I2C

Posted by Frank Beerens on 23 April 2014 - 09:02 PM in Netduino 2 (and Netduino 1)

hi did you find any time :-)




#57638 Help on I2C

Posted by Frank Beerens on 18 April 2014 - 08:10 PM in Netduino 2 (and Netduino 1)

what would be the next step, buy a new one ?




#57604 Help on I2C

Posted by Frank Beerens on 17 April 2014 - 10:52 AM in Netduino 2 (and Netduino 1)

ok i did that then the measurement are as in the previous post




#57597 Help on I2C

Posted by Frank Beerens on 16 April 2014 - 08:51 PM in Netduino 2 (and Netduino 1)

Vin 8,72

5V on netduino 4.69

SD 4.64 VDC

SC 4.63 VDC

 

you mean the left red wire.on the connector with 3 pins ?




#57552 Help on I2C

Posted by Frank Beerens on 14 April 2014 - 06:07 AM in Netduino 2 (and Netduino 1)

hi studied electronics so i should know what i am doing !!

it is a long time ago i did something with it.

 

See attachments for pics.

 

Red is +5V

Green is gnd

Attached Thumbnails

  • CIMG5708.jpg
  • CIMG5710.jpg
  • CIMG5711.jpg
  • CIMG5712.jpg
  • CIMG5714.jpg



#57517 Help on I2C

Posted by Frank Beerens on 13 April 2014 - 05:55 AM in Netduino 2 (and Netduino 1)

ok thanks. I will wait for your testing




#57499 Help on I2C

Posted by Frank Beerens on 12 April 2014 - 02:51 PM in Netduino 2 (and Netduino 1)

hi

 

where do you live, could it be an idea to send display bread board and netduino to you for testing ?

(incl power power supply ?)




#57492 Help on I2C

Posted by Frank Beerens on 12 April 2014 - 06:31 AM in Netduino 2 (and Netduino 1)

when i only connect the powersupply and nothing else the voltage on the 5V DC is 4.81 VDC ?

on both my Netduino's ? So what could be wrong then ?




#57488 Help on I2C

Posted by Frank Beerens on 11 April 2014 - 09:05 PM in Netduino 2 (and Netduino 1)

tried again and now it has a voltage also when connected

so

 

1. 8.68VDC

2. 4.67 VDC

3. 4.67 VDC (it is the same connector or what do you mean ?)

4. 4.67 VDC

5. 4.59 VDC




#57487 Help on I2C

Posted by Frank Beerens on 11 April 2014 - 08:05 PM in Netduino 2 (and Netduino 1)

1. 8.70 VDC

2. 4.67 VDC

3. 4.67 VDC

4. 4.65 VDC

5. 0 VDC

 

when i disconnect the SDA from the netduino i have 4,58 VDC with connection to the netduino it is 0VDC.

i'm getting crazy it was 4,58 VDC before when it was connected.




#57484 Help on I2C

Posted by Frank Beerens on 11 April 2014 - 04:59 PM in Netduino 2 (and Netduino 1)

not really

i sold a more powerfull powersupply (1500 mA).  I thought that would help.

The voltage on the SD line is 4,62 VDC now. But it does not seem to help.

If i have a seperate powersupply for the display is it only for the display itself or also for the i2c logic ?

i can look if have any which i can cut the wires.




#57438 Help on I2C

Posted by Frank Beerens on 08 April 2014 - 05:46 PM in Netduino 2 (and Netduino 1)

with the external power supply of 9VDC 500ma i get a voltage of 4,58VDC on the SDA line and also on the SCLLine.

 

but it does not get any tekst so i2c is still not working.

What could be the problem is the voltage still to low ? (many thanks for your help until now).




#57426 Help on I2C

Posted by Frank Beerens on 08 April 2014 - 05:51 AM in Netduino 2 (and Netduino 1)

great i can just connect usb for debugging ?

 

and the external power supply where do i connect that just to the +5v and gnd of the netduino ?




#57416 Help on I2C

Posted by Frank Beerens on 07 April 2014 - 09:31 PM in Netduino 2 (and Netduino 1)

oke i will try tomorrow.

 

only the lcd part. The i2c part will be supplied from the netduino ?




#57414 Help on I2C

Posted by Frank Beerens on 07 April 2014 - 09:25 PM in Netduino 2 (and Netduino 1)

that is 5v? when i measure 4,23 Volt.

When measuring without any connection to the netduino the voltage is 4.68 volt.




#57411 Help on I2C

Posted by Frank Beerens on 07 April 2014 - 09:20 PM in Netduino 2 (and Netduino 1)

to be sure

i have a netduino plus 2 i connected sda/scl to the sd/sc connector

that is correct ?

 

i also have a netduino 2 there i connect to Analog 4 and 5?

that is correct ?




#57409 Help on I2C

Posted by Frank Beerens on 07 April 2014 - 08:58 PM in Netduino 2 (and Netduino 1)

1. Yes there  is.

2. The voltage is 4.23V is that high enough ?

3. Delay does not help.  When debugging i can make a delay also

4. the return value is zero, also when i disconnect the i2c bus ?

5. I tried it is returning zero but the brightness does nog change

 

any other things i can do ?




#57406 Help on I2C

Posted by Frank Beerens on 07 April 2014 - 07:20 PM in Netduino 2 (and Netduino 1)

oke the square does nog seem to be pin 1. but the oppesite pin seams to be pin 1.

When i connect the power supply the lcd lights up.

 

i connected SDA and SCL to the SDA en SCL connectors on the netduino 2.

The code is running but i do net get hello on the lcd ? Wat can i test to get it up and running ?





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