Raspberry Pi Forums

PlanB

It says.....
0fe6:9700 Kontron (industrial Computer Source / ICS Advent) DM9601 Fast Ethernet Adapter

PlanB

Bugger. I guess that's why http://www.ebay.com.au/itm/191019692396 ... EBIDX%3AIT don't work neither? Any recommendations?

PlanB

A Pi zero arrived here the other day so I plugged in an sd card from a Pi3 (originally a PiB+ sd with with updates till it worked in the pi3) and a WiFi dongle and SSH from my PC worked straight up. Emboldened by this early success I thought I'd try ethernet via http://www.ebay.com.au/itm/3814753341...

PlanB

Absolutely right, some weird aliasing effect on the digital CRO triggering, tried an old analog oscilloscope & it vanished like the phantom it was. Feeding that rock solid 10kHz pwm into a 100k/100nf RC now for some smoothing makes for a nice agile control loop, very nice. Thnx for the hand hold...

PlanB

I tried just ramping the 10kHz duty cycle in steps of 40 for starters Joan but the CRO trace is all broken up, 30-40ms of 10kHz separated by similar intervals of gpio18 at 3.3v. Is this normal? I thought DMA based pwm ensured a steady stream uninterrupted by the OS like the software based versions?

PlanB

So 25000 steps at 10kHz. Does that mean my PID loop should increment the duty cycle in blocks of 40 between 0 & 1000000?

Code: Select all

dc=dc+40
pi.hardware_PWM(18, 10000, dc)

PlanB

thnx Joan, my sin was not using pi.hardware_PWM(18, 0, 0). I was forcing gpio18 low with a GPIO.output to stop the pwm & I couldn't restart pwm by rerunning the program because I didn't use pi.hardware_PWM(18, 0, 0) to end the previous instance. Hey I like the ultra fine granularity I can potent...

PlanB

I'm trying to do PWM with hardware_PWM on a Pi3 import time import pigpio pi = pigpio.pi() import RPi.GPIO as GPIO GPIO.setwarnings(0) GPIO.setmode(GPIO.BCM) GPIO.setup(18, GPIO.OUT) pi.hardware_PWM(18, 1000, 250000) # 10kHz 25% dutycycle time.sleep(5) pi.stop() # Disconnect from Pi My problem is th...

PlanB

Thnx dave, so it's probably not wearing out my sd card then with ~7200 accesses/hr in wheezy either?

PlanB

The blinking light mention in the 1st post of this thread caught my eye. On my previous PIs the wheezy sd card showed little or no activity on the green led when no programs were running but the same card in the PI3 pulses the green led at ~2Hz. How could I find out what is causing this?

PlanB

screen seems a bit flakey with the update. I have to hit ctrl A multiple times to get the option to kill the screen, anyone else notice this behaviour?

PlanB

update works thnx

PlanB

apt-get install screen is giving a 404 error for one of the files. Anybody know somewhere else I can download a copy of this utility?

PlanB

I verified that max_usb_current=1 in the /boot/config.txt file does indeed take the mosfet pin hi. But what this is really all about is the power supply you're using. Rule No. 1, never believe a current rating printed on a 5v plugpack. I hooked a 10 ohm rheostat across one of the usb outputs & p...

PlanB

I seem to be 90% of the way to getting an internet connection with wvdial & a USB modem. I've read all the stuff about mode switching & limited power on the USB ports, got that sorted I think. My problem is wvdial hangs at the very last step --> local IP address 10.181.214.101 --> pppd: ��[0...

PlanB

MrEngman you don't happen to do 3G dongles by any chance?

PlanB

It's in modem mode, the problem seems to be the default route. Normally pppd would end with something like --> secondary DNS address 85.237.225.250 --> pppd: [10]gv[01] --> pppd: [10]gv[01] --> Script /etc/ppp/ip-up run successful --> Default route Ok. Mine ends with not replacing existing default r...

PlanB

The device is recognised Bus 001 Device 002: ID 0424:9514 Standard Microsystems Corp. Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 001 Device 003: ID 0424:ec00 Standard Microsystems Corp. Bus 001 Device 008: ID 045e:0750 Microsoft Corp. Wired Keyboard 600 Bus 001 Device 012: ID...

PlanB

Nah not a power supply problem, I've jigged it so the red power light doesn't flicker. Just out of my depth I think, heaps harder than WiFi. Mr. Engman you need to bring your deft hand to this me thinks!

PlanB

Thnx for the links but I've tried then already. Sakis terminates early when it gets an error response to a pin request & wvdial connects OK but hangs after the 2nd ary DNS is issued. I was hoping I could maybe get somewhere with Huawei's HiLink.

PlanB

Does anybody know how to adapt viewtopic.php?f=36&t=18996&p=806992#p806992 to work with a Huawei E169/620/800 which loads as 12d1:1001 across ttyUSB0-ttyUSB2?

PlanB

Is there anyway I could get this working with a Huawei E169/620/800 12d1:1001 that loads as ttyUSB0 to ttyUSB1 ?

PlanB

Had a go with a Huawei E169/620/800 in the PI. Sakis crashed almost immediately bleating about the modem responding to a pin request with an error. Wvdial connected but the pppd always hung after the seconday DNS was issued. In desperation I jammed the wretched 3g dongle into a 3G-to-ethernet adapte...

PlanB

It's OK I figured it out, leave out the v7 for piB+ all good. Nice they way it uses wlan0 instead of ra0 too!

PlanB

I tried
wget https://dl.dropboxusercontent.com/u/802 ... 777.tar.gz
tar xzf mt7601-3.18.11-v7-777.tar.gz
./install.sh
with my uname -a values substituted, but its for an RPi2 & I need it for a B+

Search found 102 matches

Re: Pi Zero ethernet

Re: Pi Zero ethernet

Pi Zero ethernet

Re: New pigpio Python module

Re: New pigpio Python module

Re: New pigpio Python module

Re: New pigpio Python module

Re: New pigpio Python module

Re: Raspbian Dist-upgrade bricks rpi3

Re: Raspbian Dist-upgrade bricks rpi3

Re: Screen program

Re: Screen program

Screen program

Re: B+ and max_usb_current

wvdial diagnostic

Re: WiFi Issues ? Start here !

Re: Huawei E169

Re: Huawei E169

Re: Huawei E169

Re: Huawei E169

Huawei E169

Re: Huawei E3131 on Wheezy

3G blues

Re: WiFi Issues ? Start here !

Re: WiFi Issues ? Start here !