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by amitg1993
Wed Dec 11, 2019 5:25 am
Forum: General discussion
Topic: Arduino IDE 32 bit for Raspberry
Replies: 13
Views: 920

Re: Arduino IDE 32 bit for Raspberry

You don't need sudo to install arduino: it's supposed to install and run as a regular user. It is very important to uninstall old versions if you download the new bundle. With the boards and libraries manager, however, you can run the current Arduino compiler toolchain under a slightly older IDE. A...
by amitg1993
Tue Dec 10, 2019 10:54 am
Forum: General discussion
Topic: Arduino IDE 32 bit for Raspberry
Replies: 13
Views: 920

Re: Arduino IDE 32 bit for Raspberry

rpdom wrote:
Tue Dec 10, 2019 10:49 am
Did you try running the install without sudo first?
ya... tried it once ...but it didn't work
by amitg1993
Tue Dec 10, 2019 10:53 am
Forum: General discussion
Topic: Arduino IDE 32 bit for Raspberry
Replies: 13
Views: 920

Re: Arduino IDE 32 bit for Raspberry

LTolledo wrote:
Tue Dec 10, 2019 10:44 am
have you tried rebooting and clicking it again?
tried ...still the same
by amitg1993
Tue Dec 10, 2019 10:15 am
Forum: General discussion
Topic: Arduino IDE 32 bit for Raspberry
Replies: 13
Views: 920

Arduino IDE 32 bit for Raspberry

I am trying to install Arduino IDE on Raspberry Pi 3b+ after downloading Linux ARM 32 bit version from official website of the arduino. After extracting I am executing the command "sudo /opt/arduino-1.8.10/install.sh" I get the message as given below:- "Adding desktop shortcut, menu item and file as...
by amitg1993
Thu Jul 11, 2019 11:54 am
Forum: General discussion
Topic: forgot the password.
Replies: 11
Views: 730

Re: forgot the password.

... and you can contrast that with the command you tried at first: mount -o remount,rw / Where the device name is missing. So to try and comply with the command, mount looks up file /etc/fstab which, by convention, contains information for mounts. In your case, fstab found a device specification ma...
by amitg1993
Thu Jul 11, 2019 7:33 am
Forum: General discussion
Topic: forgot the password.
Replies: 11
Views: 730

Re: forgot the password.

Firstly, adding init=/bin/sh to cmdline.txt makes the Pi boot with a very restricted environment. It is automatically logged in as the "root" super user. Also, the main file system is set to read-only mode, which means you can't change any files. The command mount -o remount,rw /dev/mmcblk0p2 / tel...
by amitg1993
Thu Jul 11, 2019 6:31 am
Forum: General discussion
Topic: forgot the password.
Replies: 11
Views: 730

Re: forgot the password.

You can disregard the "job control turned off" message, it is unimportant. Again. Try exactly this command mount -o remount,rw /dev/mmcblk0p2 / It will not speak to you about a partition UUID. This command is ok if you have installed Raspbian. What system have you installed? I have raspbian install...
by amitg1993
Wed Jul 10, 2019 11:51 am
Forum: General discussion
Topic: forgot the password.
Replies: 11
Views: 730

Re: forgot the password.

I tried the method where cmdline.txt is edited and "init=bin/sh" is added at the last. Check your cmdline.txt file, it should include "init= / bin/sh" (forward-slash bin forward-slash sh) Then boot and try the mount command above. Tried it, still getting cant find PARTUUID. While booting there is o...
by amitg1993
Wed Jul 10, 2019 11:21 am
Forum: General discussion
Topic: forgot the password.
Replies: 11
Views: 730

Re: forgot the password.

Does "mount -o remount,rw /dev/mmcblk0p2 /" work better? This assumes you're using Raspbian where the root filesystem is in the second partition "p2", the boot FAT partition being "p1" If you're running Noobs or something else the above command won't probably work. Perhaps " fdisk -l" can show the ...
by amitg1993
Wed Jul 10, 2019 10:19 am
Forum: General discussion
Topic: forgot the password.
Replies: 11
Views: 730

forgot the password.

I have forgotten the raspberry pi 3 b+ password. how do I recover it or set a new one. I tried the method where cmdline.txt is edited and "init=bin/sh" is added at the last. But after that when i try "mount -o remount,rw /", I get an error of "mount: can't find PARTUUID=3259521a-02". How do i solve ...
by amitg1993
Wed Jul 10, 2019 10:02 am
Forum: General discussion
Topic: PWM Pulses
Replies: 11
Views: 701

Re: PWM Pulses

Does it matter? Is it stopping you doing what you want to do? The real range is the actual number of steps between off and fully on where there is an actual difference in the pulse output. That is of little interest to most people. They just want to know the way to set the minimum value (0) and the...
by amitg1993
Tue Jul 09, 2019 11:26 am
Forum: General discussion
Topic: PWM Pulses
Replies: 11
Views: 701

Re: PWM Pulses

Does it matter? Is it stopping you doing what you want to do? The real range is the actual number of steps between off and fully on where there is an actual difference in the pulse output. That is of little interest to most people. They just want to know the way to set the minimum value (0) and the...
by amitg1993
Tue Jul 09, 2019 6:43 am
Forum: General discussion
Topic: PWM Pulses
Replies: 11
Views: 701

Re: PWM Pulses

I have no idea what you mean by the peak to peak voltage, the GPIO are 3V3 or ground. The effective voltage read by a digital voltmeter will probably be wrong. An analogue meter will probably show a linear scale from 0% to 100% dutycycle. Say you are using (Broadcom) GPIO 4, 5, 6 and 7. pigs pfs 4 ...
by amitg1993
Tue Jul 09, 2019 4:25 am
Forum: General discussion
Topic: PWM Pulses
Replies: 11
Views: 701

Re: PWM Pulses

I have no idea what you mean by the peak to peak voltage, the GPIO are 3V3 or ground. The effective voltage read by a digital voltmeter will probably be wrong. An analogue meter will probably show a linear scale from 0% to 100% dutycycle. Say you are using (Broadcom) GPIO 4, 5, 6 and 7. pigs pfs 4 ...
by amitg1993
Fri Jul 05, 2019 11:29 am
Forum: General discussion
Topic: PWM Pulses
Replies: 11
Views: 701

Re: PWM Pulses

pigpio provides this to some extent. As an example experiment with the pigs pwm command. http://abyz.me.uk/rpi/pigpio/pigs.html#P/PWM The pulses will start at the same time for each GPIO regardless of the dutycycle as long as they use the same frequency. Only a limited number of frequencies are sup...
by amitg1993
Fri Jul 05, 2019 8:57 am
Forum: General discussion
Topic: PWM Pulses
Replies: 11
Views: 701

Re: PWM Pulses

gordon77 wrote:
Fri Jul 05, 2019 7:47 am
How do you synchronise different frequencies and duty cycles? Are the related in frequency eg one is twice the other?
Yes they are related in frequencies as you mentioned.
by amitg1993
Fri Jul 05, 2019 4:55 am
Forum: General discussion
Topic: PWM Pulses
Replies: 11
Views: 701

PWM Pulses

I want to generate PWM pulses on two different GPIO pins, but they should be synchronized( they have different duty cycle and frequency). I have tried them through software programming but there is equal delay between both the the pulses. I am not sure but maybe it is because of the time it is takin...
by amitg1993
Tue Jun 11, 2019 6:56 am
Forum: General discussion
Topic: core_freq changes
Replies: 4
Views: 534

Re: core_freq changes

SkyRise wrote:
Mon Jun 10, 2019 12:00 pm
The /boot/ directory on the Pi is mounted to a Windows (i.e. FAT) filesystem.
Just put your SD card into a windows machine, it should recognise this partition and let you edit the config.txt file

Thank you..!!! this worked.
by amitg1993
Mon Jun 10, 2019 10:01 am
Forum: General discussion
Topic: core_freq changes
Replies: 4
Views: 534

core_freq changes

I am using Raspberry pi 3 b+, what changes take place if we set the parameter "core_freq=100" in the "/boot/config.txt" ? I have made the above change and after reboot i am not able to see anything on my monitor, it just gives the message "HDMI out of range, 67.4Khz/ 43Hz". Please help so that i can...
by amitg1993
Mon Jun 10, 2019 4:41 am
Forum: General discussion
Topic: SCL frequency of Raspberry Pi 3b+
Replies: 2
Views: 352

Re: SCL frequency of Raspberry Pi 3b+

Thank you @ fivdi
by amitg1993
Fri Jun 07, 2019 10:51 am
Forum: General discussion
Topic: SCL frequency of Raspberry Pi 3b+
Replies: 2
Views: 352

SCL frequency of Raspberry Pi 3b+

hiii... I am new to this forum & raspberry pi . Please help me to measure SCL frequency while using I2C and also tell me how to configure it and change it
???

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