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Bernd's Content
There have been 19 items by Bernd (Search limited from 09-June 23)
#39384 DFRobot Power Shield DFR0105
Posted by Bernd on 14 November 2012 - 09:55 PM in Netduino Plus 2 (and Netduino Plus 1)
#50218 NP1 Ethernet Receive Buffer
Posted by Bernd on 03 June 2013 - 03:34 PM in Netduino Plus 2 (and Netduino Plus 1)
Hello,
does anybody know the size of the Transmit and Receive buffer of the NP1 ? I want to communicate via UDP with the NP1. The UDP packet has 512byte and so I wonder this will work, or I have to take care to send only packets that are not larger as the receive buffer.
I read the documentation of the ARM7, but I don't understand the relationships of the fifo buffer with 28byte to the receive buffer. The receive buffer consist of several buffers with a length of 128byte. But how does this buffer communicate with the fifo buffer ?
#50271 NP1 Ethernet Receive Buffer
Posted by Bernd on 04 June 2013 - 08:49 PM in Netduino Plus 2 (and Netduino Plus 1)
Ok
Thanks ziggurat29 for your fast answer. I have googled about the netbuff_alloc() and I think you are right. At the moment I am very busy but than I have free time, I will make some tests about that with different size of packets. I will give you a feedback.
#40173 Netduino Plus 2
Posted by Bernd on 25 November 2012 - 06:54 PM in Netduino Plus 2 (and Netduino Plus 1)
#40179 Netduino Plus 2
Posted by Bernd on 25 November 2012 - 08:11 PM in Netduino Plus 2 (and Netduino Plus 1)
#48959 NP powered over USB Hub with dc/dc power supply
Posted by Bernd on 02 May 2013 - 06:07 PM in General Discussion
#42543 Problem with PWM Setpulse
Posted by Bernd on 01 January 2013 - 01:55 PM in Netduino Plus 2 (and Netduino Plus 1)
Hello,
I want to control a servo directly over the NP, via the PWM Port10. So I write the following code sequence:
Servoposition1.SetPulse(20000, 1500)
But it doesn't work. So the Signal must be 20ms Peak To Peak and the duration must be 1.5ms ? Or not ?
So I have control the signal with an Oszi and it shows 40ms Peak To Peak and a duration of 3.8ms ?
Does anybody know there the problem is ?
#42556 Problem with PWM Setpulse
Posted by Bernd on 01 January 2013 - 07:58 PM in Netduino Plus 2 (and Netduino Plus 1)
Ok I found the problem. I have done a firmware update and now it works correctly.
Does anybody know where I can find the Wiki Pages ?
#53854 Powering Netduino Plus 2
Posted by Bernd on 06 November 2013 - 10:51 PM in Netduino Plus 2 (and Netduino Plus 1)
Hy sjmill01,
thanks for your answer. Do supply the barrel connector with a 7.2V accu pack or with really 7.5V ? Because my Problem is that i have only 7.2V or 5V.
#53852 Powering Netduino Plus 2
Posted by Bernd on 06 November 2013 - 10:32 PM in Netduino Plus 2 (and Netduino Plus 1)
Hello,
I have a Problem with powering my netduino plus 2. I have a 7.2V accu pack that goes to a constant voltage power unit with 5V. So I have 7.2V or 5V to disposal. I don't want to use the USB Port for the power supply, because I have Change the USB connector every time when I would like to make changes on the Netduino. The round connector and the Vin Ports have 7.5V - 9V is this right ? Is there any possibility to supply the NP2 ?
#53860 Powering Netduino Plus 2
Posted by Bernd on 07 November 2013 - 01:14 PM in Netduino Plus 2 (and Netduino Plus 1)
Ok.
Thanks for the help. If I understand it right it is not recommend to power the NP2 via the 5V pin. So I think I have find a alternative to powering the NP2. I find several boards that are able to pull up the voltage. So I will take the 7.2V of the accu pack an pull it up to 9V and connected that to the connector barrel of the NP2. This boards only costs 4-5€ so I think thats a save solution.
#48884 Static electricity and perspex
Posted by Bernd on 30 April 2013 - 04:22 PM in General Discussion
#48861 Static electricity and perspex
Posted by Bernd on 29 April 2013 - 09:51 PM in General Discussion
#50443 Netduino Plus Network Problem
Posted by Bernd on 12 June 2013 - 04:59 PM in Netduino Plus 2 (and Netduino Plus 1)
#50371 Netduino Plus Network Problem
Posted by Bernd on 09 June 2013 - 02:16 PM in Netduino Plus 2 (and Netduino Plus 1)
Hello,
I have got a problem with my netduino plus. I would like to communicate via Ethernet with a pc. In the netduino I configure a static IP Adress. After I powered up the netduino it sometimes doesn`t build up a connection to the pc. So I can`t ping the netduino plus. When I reconnect the board sometimes it works and sometimes it doesn`t work. So my first thought was that I have a problem in the programm. So I delete the program and I have the same problem again. Can anybody help me with this problem ?
#50384 Netduino Plus Network Problem
Posted by Bernd on 09 June 2013 - 07:17 PM in Netduino Plus 2 (and Netduino Plus 1)
#50403 Netduino Plus Network Problem
Posted by Bernd on 10 June 2013 - 05:49 PM in Netduino Plus 2 (and Netduino Plus 1)
I think I have found the problem. So when I powered up the Wireless N-Adapter Netgaer WNCE2001 and the NP1 together the NP1 doesn't get a IP-Adress. Before I am looking for a hardware solution I have tested a software solution:
While True Onboard_LED.Write(False) Thread.Sleep(1000) If (Eth0(0).IPAddress = "192.168.178.33") Then Exit While Else Eth0(0).ReleaseDhcpLease() Thread.Sleep(5000) Eth0(0).RenewDhcpLease() Onboard_LED.Write(True) Thread.Sleep(10000) End If End While
But now I have the problem that when I would like to Renew the IP-Adress it doesn't work. The NP1 always get IP 0.0.0.0 . I don't know where the problem is. Does anybody have got a suggestion ?
#50404 Netduino Plus Network Problem
Posted by Bernd on 10 June 2013 - 06:39 PM in Netduino Plus 2 (and Netduino Plus 1)
I am not sure but I think there is a bug:
Sub main()
While True
If (Eth0(0).IPAddress = "192.168.178.33")) Then Onboard_LED.Write(Not Onboard_LED.Read) End If
Thread.Sleep(1000)
End while
End Sub
When I debug the netduino the LED is blinking. When I stop Debugging and reboot the NP1, when the LED is not blinking but I can ping the Netduino with the IP Address 192.168.178.33. Thats strange I think or not ?
#50516 I2C LCD not working on Netduino Plus 2
Posted by Bernd on 16 June 2013 - 02:08 PM in Netduino Plus 2 (and Netduino Plus 1)
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