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by BMS Doug
Tue Oct 11, 2016 7:20 pm
Forum: General discussion
Topic: How to ask a good question. Sticky?
Replies: 35
Views: 6985

Re: How to ask a good question. Sticky?

Sorry, but there are never any good reasons for sending anything you want kept private to a complete stranger ! PeterO Different scales of private, if i want to exchange postal addresses with another forumite for some reason (hardware test perhaps) then PM is ideal. I'd prefer not to have my postal...
by BMS Doug
Tue Oct 11, 2016 7:08 pm
Forum: Advanced users
Topic: IR barrier
Replies: 7
Views: 2271

Re: IR barrier

I would have suggested automation sensing and robotics forum.

Buy a set of IR LEDtransmitter and receivers and then set them up.
by BMS Doug
Tue Oct 11, 2016 6:36 pm
Forum: General discussion
Topic: What I really want.
Replies: 41
Views: 6010

Re: What I really want.

If you cycle through enough Pi's for this to be a frequent issue for you then I would suggest setting up a 16x2 or 20x4 lcd display and setting up a SD card to display the MAC address.

Plug it all in and read off the mac address then swap your setup.
by BMS Doug
Tue Oct 11, 2016 5:38 pm
Forum: Beginners
Topic: Raspberry Pi Capability
Replies: 19
Views: 2596

Re: Raspberry Pi Capability

Which variety of LED strip are you planning to use? There are several varieties, each with a different control method. Googling: "raspberry pi LED strip" should give you a start to research. Similarly, googling: "raspberry pi fan speed control" should give you a start towards figuring out how to run...
by BMS Doug
Tue Oct 11, 2016 5:14 pm
Forum: Other projects
Topic: Raspberry PiPhone 7 Case
Replies: 10
Views: 5591

Re: Raspberry PiPhone 7 Case

just use a galaxy note 7 case ... you can get them in a fire sale now - buy one get 2.5mil free Can someone explain this not 7 thing? Do the explode or something? Ive been living in a box for the last few weeks. Batteries caught fire or exploded. https://www.theguardian.com/technology/2016/oct/11/s...
by BMS Doug
Tue Oct 11, 2016 4:47 pm
Forum: Off topic discussion
Topic: Face Recognition to activate Solenoid or Relay HELP
Replies: 1
Views: 2938

Re: Face Recognition to activate Solenoid or Relay HELP

Hi all, I apologise in advance if this in the wrong place, or this confuses you. I'm a relative newbie to any kind of electronics. I want to build a security system entrance to my work space using face recognition (OpenCV), I found a tutorial by Tony DiCola which is perfect for that desire. https:/...
by BMS Doug
Tue Oct 11, 2016 2:38 pm
Forum: Beginners
Topic: Basic issues getting 8 x 7segment display working
Replies: 10
Views: 1744

Re: Basic issues getting 8 x 7segment display working

Looks like your Pi doesn't have the file that you are asking for, have you installed the library? Installing the library Note: The library has been tested against Python 2.7 and 3.4. For Python3 installation, substitute pip ⇒ pip3, python ⇒ python3, python-dev ⇒ python3-dev, and python-pip ⇒ python3...
by BMS Doug
Tue Oct 11, 2016 2:32 pm
Forum: Beginners
Topic: how to recieve preamp output of an audio amplifier ?
Replies: 6
Views: 1896

Re: how to recieve preamp output of an audio amplifier ?

thank you @mikronaut @drgeoff. I don't have much knowledge on hardware, I am a software programmer so please validate my understanding. The amplifier( http://www.ahujaradios.co.in/amplifiers-2/pa-amplifier-with-built-in-player/tza-2000supsupdp.html ) outputs a preamp signal which is analog. raspber...
by BMS Doug
Mon Oct 10, 2016 11:03 pm
Forum: Beginners
Topic: STICKY: Using a Gert VGA 666 adapter - [HOWTO]
Replies: 216
Views: 250155

Re: Using a Gert VGA 666 adapter - [HOWTO]

On the pi3 I use this config.txt on raspbian Jessie (no other config) dtoverlay=vga666 enable_dpi_lcd=1 display_default_lcd=1 dpi_group=2 dpi_mode=16 dtparam=spi=off dtparam=i2c_arm=off dtoverlay=pi3-disable-bt-overlay I'm trying to get my vga666 working again as my daughter wants a dedicated monit...
by BMS Doug
Mon Oct 10, 2016 4:27 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: I2C PWM Expander DIP
Replies: 10
Views: 2688

Re: I2C PWM Expander DIP

I had a good google and couldn't find much out there, how about an ATMEGA328 (basis of arduino) programmed as an i2c slave? Alternatively you could attach a PCA9635 (the brains of adafruits pwm board) onto a smd to dip converter (which still requires smd soldering, which is the bit i think you are t...
by BMS Doug
Mon Oct 10, 2016 11:36 am
Forum: General discussion
Topic: Rotary Encoder
Replies: 7
Views: 2234

Re: Rotary Encoder

If you want to be ultra cautious then the RASPIO pro HAT or RASPIO easywire pro adds zener diodes for over-voltage protection and 330 ohm resistors for over-current protection.
by BMS Doug
Mon Oct 10, 2016 10:19 am
Forum: HATs and other add-ons
Topic: PIFACE RELAY PLUS
Replies: 6
Views: 2846

Re: PIFACE RELAY PLUS

this Pi relay base may be suitable, but be aware that it's quite a bit bigger than the pi footprint.
by BMS Doug
Mon Oct 10, 2016 9:48 am
Forum: General discussion
Topic: Domotic Starter kit
Replies: 11
Views: 2203

Re: Domotic Starter kit

I tend to use amazon, modmypi are very good for larger items (their customer service is great), i would use them for everything but for small items chinese components are unbeatable on price and generally reliable.
by BMS Doug
Mon Oct 10, 2016 8:19 am
Forum: General discussion
Topic: Domotic Starter kit
Replies: 11
Views: 2203

Re: Domotic Starter kit

AlexBoost wrote:Ahah right ! I will think about this one =)
What do you think about the one above ?
I think they are overcharging.

If you have an idea of what you want to do then buy the parts for that, i could probably get the kit you linked for 1/4 the price by buying yhe components individually.
by BMS Doug
Mon Oct 10, 2016 7:54 am
Forum: General discussion
Topic: Domotic Starter kit
Replies: 11
Views: 2203

Re: Domotic Starter kit

This kit has enough to get started and won't break the bank. To compliment the YouTube series, we've put together the YouTube workshop kit which includes all the components necessary to follow the 10 video guides from start to finish! Each Raspberry Pi YouTube Workshop Kit Includes: 1 x Transparent...
by BMS Doug
Mon Oct 10, 2016 7:26 am
Forum: General discussion
Topic: Rotary Encoder
Replies: 7
Views: 2234

Re: Rotary Encoder

There is no need for an external supply, GPIO's set to input take very little current (current limiting resistors should be added to prevent damage if the GPIO's accidentally get switched to output). The chances are that your external supply has broken your pi, does it run with nothing connected to ...
by BMS Doug
Mon Oct 10, 2016 7:08 am
Forum: General discussion
Topic: Raspberry Gameboy Cartridge Dumping I/O Pin Assistance
Replies: 3
Views: 6521

Re: Raspberry Gameboy Cartridge Dumping I/O Pin Assistance

You can use this HAT http://www.nationelectronics.com/raspberry-pi-extensions/1-raspberry-pi-hat-32-io-port-expander-v11-0648260628192.html It has two port expanders (32 I/O) and the Signal Level Shift Module from 3.3V to 5V that you need. ----- viglesias The OP already said that i2c was too slow.
by BMS Doug
Sun Oct 09, 2016 10:38 pm
Forum: Automation, sensing and robotics
Topic: DIY IR beam break
Replies: 23
Views: 7135

Re: DIY IR beam break

boyoh wrote: What is a Geek with the Raspberry Pi, asking questions, he seems to know the answers to
Perhaps the act of formulating his post gave him an insight into the solution?
by BMS Doug
Sun Oct 09, 2016 10:27 pm
Forum: General discussion
Topic: Will Rpi price go down thanks to weaker Pound?
Replies: 16
Views: 7335

Re: Will Rpi price go down thanks to weaker Pound?

Lets keep the forum to solving Pi problems, and not how much it cost's The components will be bought from the cheapest supplier.to make the Most profit China Taiwan NOT UK Component quality is something that the Pi Trading team keep an eye on, they won't let the Pi suffer from poor quality componen...
by BMS Doug
Sun Oct 09, 2016 7:48 pm
Forum: Automation, sensing and robotics
Topic: Garage port opener - 100$ bonus
Replies: 11
Views: 1891

Re: Garage port opener - 100$ bonus

To clarify the exact issue: Have you observed the relay operating when not desired or have you found the garage to be open unexpectedly and are assuming that the relay is the cause? The reason that I ask is that my mother-in-laws garage door started playing up, sometimes it would re-open when it sho...
by BMS Doug
Sun Oct 09, 2016 1:57 pm
Forum: General discussion
Topic: Help with Eletricity GPIO !!!!
Replies: 5
Views: 2977

Re: Help with Eletricity GPIO !!!!

You need to use a transistor to switch the higher voltage.

A 3.3v to 5v logic level converter would be useful for you.
by BMS Doug
Sat Oct 08, 2016 9:40 pm
Forum: Other projects
Topic: Raspberry PiPhone 7 Case
Replies: 10
Views: 5591

Re: Raspberry PiPhone 7 Case

blaablaaguy wrote: I dont think many people on this forum would own an iphone.
Why not?

The iphone has so many great features like...

...ummm....

...Give me minute here...

...Waterproof, thats innovative and new right?

Oh, Samsung did that 2 generations ago?

...Well, i'm sure there are some good features.
by BMS Doug
Sat Oct 08, 2016 9:11 pm
Forum: Beginners
Topic: Screen using GPIO pins
Replies: 23
Views: 13493

Re: Screen using GPIO pins

If I use the ribbon cable with the male for the screen, can I use the 5v and 3v pins used by the screen on the other female end? Will they get power and not interfere with the power taken by the screen? Yes, that will be fine. The problem is the screen came with a small HDMI-HDMI thing that will on...
by BMS Doug
Sat Oct 08, 2016 6:44 am
Forum: Python
Topic: Is it ok for an 11-year-old kid to ask questions here?
Replies: 39
Views: 6384

Re: Is it ok for an 11-year-old kid to ask questions here?

I am allowed to change light bulbs, all now replaced with LED ones ;) If it saves on the power bill its allowed, guess who pays them :lol: Also have about 10 years of spares, GU10's rock. Er bit off track for 11yr olds. At current rate of LED lighting progress, 11year olds may never need to replace...
by BMS Doug
Sat Oct 08, 2016 6:30 am
Forum: Beginners
Topic: Screen using GPIO pins
Replies: 23
Views: 13493

Re: Screen using GPIO pins

Put a board (with stacking connectors) between the Pi and the LCD add-on. http://www.mikronauts.com/wp-content/upload/2014/12/aplus_eeprom_front_0741.jpg Pic above is one of my large prototyping boards connected to an Raspberry Pi A+ with a stacking header - it would be easy to plug one of the GPIO...

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