Go to advanced search

by rtek1000
Thu May 31, 2018 2:52 pm
Forum: General discussion
Topic: DIY: Power Bank for Raspberry Pi 3?
Replies: 5
Views: 1098

Re: DIY: Power Bank for Raspberry Pi 3?

Hello, I have not yet tested the TP4056 module with BMS, but I tested this module without BMS. I have some emergency LED luminaires, which supplied a few mA of charge to the battery, but this luminaire had no charge manager and was damaging the 18650 battery with overcharging. The luminaire supplies...
by rtek1000
Thu May 31, 2018 6:07 am
Forum: General discussion
Topic: DIY: Power Bank for Raspberry Pi 3?
Replies: 5
Views: 1098

Re: DIY: Power Bank for Raspberry Pi 3?

Hello, I've noticed that it can not consume current from the battery while it is charging, so the 1N5402 diode provide power to the MT3608 while the power supply is plugged into the AC power outlet. I noticed that there was an error in the zener description: 4V7 1/2W. I tested the MT3608 with only a...
by rtek1000
Thu May 31, 2018 5:43 am
Forum: General discussion
Topic: DIY: Power Bank for Raspberry Pi 3?
Replies: 5
Views: 1098

DIY: Power Bank for Raspberry Pi 3?

Hello,

Has anyone tested the TP4056 module (with built-in BMS) + MP3608?

I'm thinking of testing this arrangement:

Image
by rtek1000
Mon Oct 30, 2017 4:17 am
Forum: General discussion
Topic: wpa_cfg.py - Python script to helps wpa_supplicant (+ speed test)
Replies: 0
Views: 913

wpa_cfg.py - Python script to helps wpa_supplicant (+ speed test)

There are many ways to configure the wireless interface, but anyone who only uses the console knows that it is a bit bad to work with multiple commands to get the configuration of a network card. :idea: A script might help a little, someone may be interested in testing, so I'll leave attached here (...
by rtek1000
Fri Mar 10, 2017 2:34 pm
Forum: Troubleshooting
Topic: [Ok] Enable SSH to Raspbian Jessie (Lite) without a monitor
Replies: 14
Views: 68627

Re: [Ok] Enable SSH to Raspbian Jessie (Lite) without a moni

In the past, SSH was enabled by default, so people using their Pi headless could easily update their SD card to a new image. Switching SSH on or off has always required the use of raspi-config or the Raspberry Pi Configuration application, but to access those, you need a screen and keyboard connect...
by rtek1000
Thu Dec 22, 2016 4:43 am
Forum: General discussion
Topic: Best way to run a python script at startup?
Replies: 35
Views: 325019

Re: Best way to run a python script at startup?

I found this way, and works for me, I don't need login: [email protected]:~ $sudo nano /home/pi/prog/startscriptpython.sh #!/bin/bash sudo python /home/pi/prog/progPython1.py & sudo python /home/pi/prog/progPython2.py & [email protected]:~ $sudo chmod +x /home/pi/prog/startscriptpython.sh [email protected]:~...
by rtek1000
Wed Dec 21, 2016 1:08 am
Forum: General discussion
Topic: PIXEL killed and buried apt-get?
Replies: 3
Views: 858

PIXEL killed and buried apt-get?

Hello, I tried sudo apt-get update but returns Err http://mirrordirector.raspbian.org jessie Release.gpg Could not resolve 'mirrordirector.raspbian.org' And others errors similar. Using: Raspbian Jessie with PIXEL Image with PIXEL desktop based on Debian Jessie Version: November 2016 Release date: 2...
by rtek1000
Thu Dec 15, 2016 9:19 pm
Forum: General discussion
Topic: How to update system Date & Time from GPS Neo 6M [Python]
Replies: 0
Views: 1943

How to update system Date & Time from GPS Neo 6M [Python]

I've seen some idea to update the system clock from the GPS, but need an application that receives GPS data and send it to the NTP, then update the system clock. This code below defines the system without any of this Tested with Neo 6M GPS Module and Raspberry Pi B (Python 2.7.9) Note: this module a...
by rtek1000
Sun Jul 17, 2016 4:02 am
Forum: Other
Topic: Windows CE [obsolete]
Replies: 147
Views: 105457

Re: Windows CE

Hello, I would like to use RPi with Windows CE 6.0 Many HMI run Windows 6.0 I am needing a board to replace another board (Marvel PXA270 300MHz) that works with Windows CE 6.0 I saw that Beaglebone Black works with Windows CE 6.0 Friendlyarm 6410 board works with Windows CE 6.0 Even the manufacturer...
by rtek1000
Wed Apr 13, 2016 5:11 pm
Forum: Python
Topic: NTP & RTC (DS1307) & Python
Replies: 0
Views: 1113

NTP & RTC (DS1307) & Python

Hello, I would like to post this program here for my future research. This program attempts to receive data from up to three NTP servers. And Synchronize the system and the RTC Or just synchronize the system clock via RTC if no data is received from NTP servers. I uninstalled NTP with apt-get, becau...
by rtek1000
Mon Mar 28, 2016 5:33 pm
Forum: Troubleshooting
Topic: [Ok] Enable SSH to Raspbian Jessie (Lite) without a monitor
Replies: 14
Views: 68627

[Ok] Enable SSH to Raspbian Jessie (Lite) without a monitor

Use a computer with linux and edit the /etc/rc.local file on RPi SD card: (tested with Xubuntu 15.10 LiveCD not need install) a. Create a empty file called etc/SSHFLAG (just open and save) (Xubuntu: sudo mousepad /etc/SSHFLAG) b. Insert the following code into etc/rc.local just above the exit 0 line...
by rtek1000
Wed Aug 20, 2014 6:11 pm
Forum: Other projects
Topic: Yet Another PIC Programmer for the Raspberry Pi
Replies: 21
Views: 7303

Re: Yet Another PIC Programmer for the Raspberry Pi

hello,

I would like to make a programmer for eeprom w25q128.

I found a library for Arduino to this memory (SPI):
https://code.google.com/p/winbondflash/

have some way to use this interface to program eeprom using the RPI?
by rtek1000
Wed Apr 16, 2014 3:22 am
Forum: Troubleshooting
Topic: Volume was not properly unmounted ...
Replies: 46
Views: 114284

Re: Volume was not properly unmounted ...

It work for me: sudo umount /boot sudo git clone http://daniel-baumann.ch/git/software/dosfstools.git sudo cd dosfstools sudo make sudo make install sudo ./fsck.fat -V /dev/mmcblk0p1 sudo ./fsck.fat -a /dev/mmcblk0p1 sudo mount /boot from: http://lusorobotica.com/index.php?topic=7158.0 In the line: ...
by rtek1000
Tue Apr 08, 2014 3:06 am
Forum: General discussion
Topic: How to read write sdcard ext4 partition on Windows system!
Replies: 8
Views: 7680

How to read write sdcard ext4 partition on Windows system!

To open files of SD card: 1 - install Oracle Virtualbox on Windows (tested with version 4.2.16) https://www.virtualbox.org/wiki/Download_Old_Builds_4_2 2 - add Extension pack (USB) (tested with version 4.2.16) https://www.virtualbox.org/wiki/Download_Old_Builds_4_2 3 - run or install LiveCD Linux (t...
by rtek1000
Tue Apr 08, 2014 2:09 am
Forum: Beginners
Topic: win32diskimager problems
Replies: 6
Views: 1865

Re: win32diskimager problems

Please see an alternative:

http://www.alexpage.de/usb-image-tool/

Good luck!
by rtek1000
Tue Apr 08, 2014 12:41 am
Forum: Automation, sensing and robotics
Topic: Controlled Shutdown at Power Failure
Replies: 72
Views: 54096

Re: Controlled Shutdown at Power Failure

Hello guys, Yesterday I turned off the Raspbian normally, I expected to stay only the red LED lit, after some time I turned off the power. Today I had a bad experience! The RPI was not fully loading the boot and appeared on the screen to manually run ' fsck '. And I ran the 'fsck' on my Xubuntu. It ...
by rtek1000
Thu Mar 27, 2014 6:19 pm
Forum: Automation, sensing and robotics
Topic: Controlled Shutdown at Power Failure
Replies: 72
Views: 54096

Re: Controlled Shutdown at Power Failure - News

If you disable LAN chip, the use of super capacitors can be viable: Disable LAN9512 The LAN9512 is the hardware device which controls Ethernet and USB ports. This chip consumes almost 200mA, and it will be very useful to disable it to save energy when I don't need USB or Ethernet. The LAN9512 datash...
by rtek1000
Thu Mar 27, 2014 6:50 am
Forum: General discussion
Topic: Micro UPS
Replies: 5
Views: 3793

Re: Micro UPS

Maybe this scheme:

Image
by rtek1000
Thu Mar 27, 2014 6:43 am
Forum: Automation, sensing and robotics
Topic: Controlled Shutdown at Power Failure
Replies: 72
Views: 54096

Re: Controlled Shutdown at Power Failure

I was thinking of doing something simpler, leveraging what is already commercially available.

Image
by rtek1000
Thu Mar 27, 2014 6:28 am
Forum: Automation, sensing and robotics
Topic: Safe shutdown - Simple way
Replies: 31
Views: 5414

Re: Safe shutdown - Simple way

I would like to do a layout with super capacitors only to safely shut down the Raspberry. For the case of missing local electricity network. But I noticed in video that you need to use large size and high value capacitors: https://www.youtube.com/watch?v=sNnNGzdZzjw Maybe if use a regulator, the cha...
by rtek1000
Sun Mar 23, 2014 2:57 pm
Forum: General discussion
Topic: My Raspberry Pi does nothing
Replies: 6
Views: 1224

Re: My Raspberry Pi does nothing

since it has no more to do with it, you could put it for sale, perhaps in the http://www.ebuy.com

then some day for doing any project can buy another.
by rtek1000
Sun Mar 23, 2014 2:46 pm
Forum: General discussion
Topic: [solved] eSpeak with accent on Raspbian
Replies: 2
Views: 848

[solved] eSpeak with accent on Raspbian

Hello guys, I would like to use espeak with pt voice, but the accent only work in x86 (or x64) platform. On Ubuntu 13.10 the eSpeak run fine. For example: for speak 'por favor' in 'portuguese brazilian' I use the command line: espeak -vpt 'p\xF4r favor' the \xF4 is a accent phonetic (ô), this work v...
by rtek1000
Thu Mar 13, 2014 11:23 am
Forum: Raspbian
Topic: How to use the Raspbian with a SD card read only?
Replies: 1
Views: 501

How to use the Raspbian with a SD card read only?

Before anything else, I want to make it clear that I am aware that this may result in the loss of several functions of the operating system. What I am looking for: long duration of SD card. The suggestion to use the SD card only reading, makes the system is operating in a similar way to a simple mic...
by rtek1000
Wed Mar 12, 2014 9:34 pm
Forum: Raspbian
Topic: Raspbian: Useful Life of SD card
Replies: 1
Views: 555

Raspbian: Useful Life of SD card

Please see this tips:
Tips for running Linux on a flash device
by David Härdeman <[email protected]>
http://www.cyrius.com/debian/nslu2/linux-on-flash/

The Raspbian has this type of protection to the SD card?

Go to advanced search