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by chipace
Wed Feb 19, 2020 11:28 pm
Forum: Advanced users
Topic: Create an (ISO/BIN) Image
Replies: 6
Views: 187

Re: Create an (ISO/BIN) Image

It would be cool if the Raspbian included "SD Card Copier" allowed creation of an image file (the same format as the ones that can be downloaded from the official site). If a valid destination device is not present (USB drive, usb adapter with micro sd card) there is no option to write to a file. Ju...
by chipace
Fri Feb 14, 2020 8:34 pm
Forum: General discussion
Topic: What will be likely the next "value node" for the raspberry pi in 2025
Replies: 6
Views: 273

Re: What will be likely the next "value node" for the raspberry pi in 2025

Broadcom makes the silicon, so I would look at what they are selling today... and assume that it is value in 5 years. So do you want to know what ARM cores and IP Broadcom is making today?
by chipace
Tue Feb 11, 2020 9:47 pm
Forum: General discussion
Topic: Raspberry pi portable cloud?
Replies: 11
Views: 1466

Re: Raspberry pi portable cloud?

Pirate Box! Arrrh!
https://piratebox.cc/faq
by chipace
Tue Jan 28, 2020 11:38 pm
Forum: Advanced users
Topic: How to power up external Hard Disk
Replies: 5
Views: 426

Re: How to power up external Hard Disk

I would buy a single 8TB external drive (with wall power supply) and recycle your old internal HDDs. Less hassle for the same money spent. It is a single point of failure, you will need another backup (or 2).
I was faced with a similar choice recently, and this is the way I went.
by chipace
Mon Jan 27, 2020 6:14 pm
Forum: General discussion
Topic: dvd cd player
Replies: 4
Views: 311

Re: dvd cd player

Are you looking for a specific usb cd/dvd drive which will work with the latest raspbian software?

I saw this thread:
https://www.raspberrypi.org/forums/view ... p?t=189977

No specific recommendations made there.
by chipace
Thu Jan 23, 2020 11:13 pm
Forum: General discussion
Topic: Fail2ban not sending email notifications
Replies: 6
Views: 307

Re: Fail2ban not sending email notifications

I use msmtp to send emails from my gmail account.
I have a /etc/msmtprc file with my credentials.
by chipace
Thu Jan 23, 2020 10:24 pm
Forum: General discussion
Topic: Obvious, but you should not miss that!
Replies: 19
Views: 1093

Re: Obvious, but you should not miss that!

Imperf3kt wrote:
Wed Jan 22, 2020 11:54 pm

Personally, I always use mine on a clean, wooden surface.
I use a desk made of https://en.wikipedia.org/wiki/Quercus_robur out of respect for Eben Upton. It was blessed by a pastor from the church of raspberry pi.
by chipace
Thu Jan 23, 2020 10:11 pm
Forum: General discussion
Topic: iPad pro connection to Raspberry Pi4
Replies: 4
Views: 259

Re: iPad pro connection to Raspberry Pi4

I connect to a iphone 6s with that cable without issue.
Then i backup my photos/videos.
https://github.com/charkster/iphone_photo_backup
by chipace
Mon Jan 20, 2020 6:04 am
Forum: General discussion
Topic: Raspberry and FPGA
Replies: 17
Views: 838

Re: Raspberry and FPGA

I looked at rev E and rev F of the board schematics, and the QSPI Flash only connects to the Zynq. I believe boundary scan is your only option. It looks like JTAG is available on one of the pin headers. As Zynq is Xilinix, the app note I listed earlier should help. If I had to program the Flash with...
by chipace
Mon Jan 20, 2020 5:31 am
Forum: General discussion
Topic: How to work around power limitations of the USB ports on the Pi4?
Replies: 9
Views: 577

Re: How to work around power limitations of the USB ports on the Pi4?

Rather than pay $20 for a new powered USB 3.0 hub, you could put the money towards a new powered USB HDD. Don't know if you need more than 512GB, but 8TB drives are a little over $100 these days. Lots of space to grow into.
by chipace
Sun Jan 19, 2020 8:17 pm
Forum: General discussion
Topic: Measure 12v supply with pi
Replies: 24
Views: 957

Re: Measure 12v supply with pi

For my solar powered RPi zero I use the INA260 to log the battery voltage and charge current. Connects nicely to Sparkfun's Sunny Buddy MPT charger. I'm using a 4V rechargable battery. No USB peripherals attached to the RPi zero. Be sure to use the RPi low power configuration... HDMI off and that so...
by chipace
Sat Jan 18, 2020 5:09 pm
Forum: General discussion
Topic: Samba share whole external drive
Replies: 7
Views: 2292

Re: Samba share whole external drive

If you run into issues with how clients mount the samba share (under linux), be aware that proper uid and gid are required in order to keep permissions, timestamps and file attributes when copying them to the samba server. In one case I needed to use "gcp" instead of cp to retain my timestamps. I ha...
by chipace
Sat Jan 18, 2020 4:31 pm
Forum: General discussion
Topic: Raspberry and FPGA
Replies: 17
Views: 838

Re: Raspberry and FPGA

I would think that just programming the Flash rom (which the FPGA loads from) would be the only requirement to "program the FPGA". To address the parents original question, yes a SPI or I2C interface on the RPi could program a FPGA's Flash rom memory. For my board that would not be possible as the U...
by chipace
Fri Jan 17, 2020 11:33 pm
Forum: General discussion
Topic: Raspberry and FPGA
Replies: 17
Views: 838

Re: Raspberry and FPGA

My FPGA board (CMOD A7) has a on-board USB to JTAG. Theoretically you can just send the same USB payload as you would do in Windows with the RPi. I believe this app note can help for Xilinx products. https://www.xilinx.com/support/documentation/application_notes/xapp058.pdf https://store.digilentinc...
by chipace
Fri Jan 17, 2020 10:24 pm
Forum: General discussion
Topic: Measure 12v supply with pi
Replies: 24
Views: 957

Re: Measure 12v supply with pi

INA260 will measure the voltage and current it is sourcing (up to 15A). Voltage range is 0V to 36V. No calibration needed. I use them everyday on my RPi.
https://www.adafruit.com/product/4226
https://github.com/charkster/INA260

Battery ground and RPi need to share the same ground.
by chipace
Wed Jan 08, 2020 3:02 am
Forum: General discussion
Topic: raspbian buster bluetooth enable/disable commands
Replies: 2
Views: 254

Re: raspbian buster bluetooth enable/disable commands

klricks wrote:
Tue Jan 07, 2020 5:39 am
Try the rfkill command:
Thank you. This is exactly what I was looking for.
I am using

Code: Select all

bluetoothctl info
to show the device which I am currently connected to.

I am able to poll for a connection by looking for

Code: Select all

ls /dev/input/event4
by chipace
Tue Jan 07, 2020 4:45 am
Forum: General discussion
Topic: raspbian buster bluetooth enable/disable commands
Replies: 2
Views: 254

raspbian buster bluetooth enable/disable commands

I'm wanting to disable/enable bluetooth in a shell script, in order to turn-off my bluetooth speaker (with its inactivity timer). Is there anyway to know the command that is run when I do it using the GUI (bluetooth menu)? Is there anyway to know the command which is run when I connect to the speake...
by chipace
Sun Jan 05, 2020 2:07 am
Forum: General discussion
Topic: Powering Pi and USB hub from single power source
Replies: 7
Views: 414

Re: Powering Pi and USB hub from single power source

I was thinking about buying a Y splitter cable to take 2 hub ports (each 900mA) to power the RPi4. I didn't go ahead with this because I expect the voltage to dip more than the RPi4 likes. I live with 2 wall adapters in my setup... it is not elegant, but it has been rock-solid reliable. I wish that ...
by chipace
Mon Dec 16, 2019 8:36 pm
Forum: General discussion
Topic: New Raspberry Pi user
Replies: 7
Views: 325

Re: New Raspberry Pi user

I am looking for suggestions on a couple of kits that could help me with this exercise. I understand that there are sophisticated PLC's and sensors available for this task, but I think starting small would better connect the Team Members to the idea of instant Feedback, Data, and Problem Solving. I...
by chipace
Mon Dec 16, 2019 6:23 pm
Forum: General discussion
Topic: pitfalls with powering a RPi with USB hub port(s)
Replies: 6
Views: 428

Re: pitfalls with powering a RPi with USB hub port(s)

Wondering if you ever found a solution to this instead of running both power lines? I decided to use a powered USB hard disk on one USB 3.0 port which lets me fit in the present current limit. I use the second portable hard disk as my off-site backup now. I got worried after reading about some USB ...
by chipace
Thu Dec 12, 2019 7:28 pm
Forum: General discussion
Topic: New Pi 4B as a laptop - questions plz
Replies: 10
Views: 493

Re: New Pi 4B as a laptop - questions plz

Even if there was hardware support for PCIe SSDs and more USB 3.0 peripherals, the software is nowhere near as polished as a linux distro on an x86 laptop. It's the software that keeps me running a x86 laptop as my primary computing device. The x86 can dual boot into Windows for the times I have to ...
by chipace
Tue Dec 10, 2019 7:52 pm
Forum: Advanced users
Topic: Show current IP address on desktop or statusbar
Replies: 5
Views: 2715

Re: Show current IP address on desktop or statusbar

Not sure about the applet, but if you could get it to display the output of curl https://ipinfo.io/ip That will give your routeable IP as output >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> I use this approach with a cron script to email myself when my home IP ad...
by chipace
Fri Dec 06, 2019 7:41 pm
Forum: General discussion
Topic: 1-Wire Interface
Replies: 3
Views: 223

Re: 1-Wire Interface

Have you enabled the 1wire bus in config.txt file or by using the GUI? There is a kernel driver for 1wire devices, and I believe you should be able to see them in the /dev directory. I have never used python with them, I would just read from the memory mapped IO (the file in /dev). I can't find any ...
by chipace
Tue Nov 26, 2019 5:39 pm
Forum: General discussion
Topic: pitfalls with powering a RPi with USB hub port(s)
Replies: 6
Views: 428

pitfalls with powering a RPi with USB hub port(s)

In order to add 2 portable hard disks to my RPi4 I need to add a powered USB 3.0 hub. I am wondering if I could power the RPi4 with one (or more) of the extra hub ports... allowing for a single wall power supply. I have seen dual USB A to single USB C cables on Amazon, and was thinking that could gi...
by chipace
Sat Nov 16, 2019 5:53 am
Forum: General discussion
Topic: MCP4725 DAC with LCD issues
Replies: 44
Views: 2400

Re: MCP4725 DAC with LCD issues

Here's my i2c driver: Here is lcddriver.py import i2c_lib import time class lcd: # LCD Address ADDRESS = 0x27 # commands LCD_CLEARDISPLAY = 0x01 LCD_RETURNHOME = 0x02 LCD_ENTRYMODESET = 0x04 LCD_DISPLAYCONTROL = 0x08 LCD_CURSORSHIFT = 0x10 LCD_FUNCTIONSET = 0x20 LCD_SETCGRAMADDR = 0x40 LCD_SETDDRAMA...

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