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by Icosagon
Fri May 31, 2019 1:19 pm
Forum: Automation, sensing and robotics
Topic: Help with Relays and GPIO
Replies: 4
Views: 350

Re: Help with Relays and GPIO

Hiya too,

Use Arduino via Serial Communication, its easier and safe. You didn't specify the programming language you used :| .

Hope this helps, Icosagon
by Icosagon
Fri May 31, 2019 1:14 pm
Forum: Automation, sensing and robotics
Topic: What sensor for controlling home temperature?
Replies: 4
Views: 326

Re: What sensor for controlling home temperature?

Hello

You can use a DHT11 to measure temperature and use a relay to switch on fans and ac if thats what you meant.
Also how do you plan to control the house temperature. You can't control temperature using sensors. Sensors just Sense :lol:

Icosagon
by Icosagon
Fri May 31, 2019 1:10 pm
Forum: Other
Topic: Ubuntu Server on HDD
Replies: 8
Views: 548

Re: Ubuntu Server on HDD

Hey Matt Penfold

Is your HDD connected to Pi via USB?. If it is you can't boot unless you enable usb booting on it.
Did you properly flash Ubuntu to HDD ? Try setting the boot bit
https://www.raspberrypi.org/documentati ... des/msd.md
by Icosagon
Fri May 31, 2019 1:06 pm
Forum: Beginners
Topic: First Project - Already stuck
Replies: 9
Views: 841

Re: First Project - Already stuck

Hello Lindiml, If you want to communicate between two RPis you can use Python sockets . Just connect the two Pis to same network (eg: Wi-Fi hotspot). Python sockets is easier to use. So try that. And for doing projects getting to know about pi is not necessary. Pi is like a mini computer with more c...
by Icosagon
Tue May 28, 2019 4:07 am
Forum: Automation, sensing and robotics
Topic: Make a real robot
Replies: 18
Views: 1599

Re: Make a real robot

Hey Guys I figured how to control the robot via computer. I used python sockets to send messages between pc and pi. And for the GUI i used Kivy (GTK might be better) to get sensor values and to control it. To display the MJPEG camera stream in the GUI , I used OpenCV capture to do that. There's late...
by Icosagon
Sat May 04, 2019 10:14 am
Forum: General discussion
Topic: Power fans to cool Rpo 3B+
Replies: 6
Views: 377

Re: Power fans to cool Rpo 3B+

This is a very basic question. :) First read whats written on the computer fans power requirement (most of the are 12v). Soldering isn't required for this. Just connect the positive wires of every fan and negative wires of the fan.(+ & - separately) and use any 12v DC adapter to power them. That's a...
by Icosagon
Sat May 04, 2019 10:00 am
Forum: General discussion
Topic: Portable Stellarium
Replies: 1
Views: 171

Re: Portable Stellarium

It is possible according to stellarium source forge discussion and there are programs for that called Stellarium But it may be slow on the pi. On their website, one person got 18 fps. The new raspberry pi 3b maybe faster and have 1 GB ram, zero might be slower. I haven't used GPS with raspberry but ...
by Icosagon
Fri May 03, 2019 5:58 am
Forum: Beginners
Topic: How to write a software to control the pi board
Replies: 9
Views: 527

Re: How to write a software to control the pi board

Hello TatarPro What drone are you making ? NVM :D . I have a similar project but its a rover. Python is easy but if you know c++ that will be better. You'll need wifi(router or connect pi to a wifi) to do this I am planning to use python sockets for controlling. And you could easily make a GUI in a ...
by Icosagon
Fri May 03, 2019 5:42 am
Forum: Automation, sensing and robotics
Topic: Sprint Timer
Replies: 10
Views: 775

Re: Sprint Timer

Hello

As Scotty said, Laser is good . Place laser on one side and ldr on the other.
by Icosagon
Fri May 03, 2019 5:38 am
Forum: General discussion
Topic: Robotic recycling bin project
Replies: 13
Views: 682

Re: Robotic recycling bin project

Thank you all for the replies :D :P . we was thinking of having plastic, paper, and metal. realy just the main litter in school and i think the idea with multiple flaps and a lazer to stop cheating is great. :D You can detect objects by reflection. Put a torch or led in it and LDR to see whether th...
by Icosagon
Fri May 03, 2019 5:23 am
Forum: Beginners
Topic: Using Etcher on Raspbian Stretch?
Replies: 5
Views: 276

Re: Using Etcher on Raspbian Stretch?

Hi there Purple Dragon !! Why would you want to use Etcher on your pi. Ether is not necessary to flash in your pi., You could use the dd command. You should use Etcher in your PC to do that. And If you have already booted using sd card. You cant just remove it and add another sd card and flash it. A...
by Icosagon
Fri May 03, 2019 5:09 am
Forum: Automation, sensing and robotics
Topic: Make a real robot
Replies: 18
Views: 1599

Re: Make a real robot

Hello Joel

Is ROS necessary for making the robot. And i think ROS doesn't support raspbian :) . I could download opencv and tensorflow and still use it right :?:
by Icosagon
Thu May 02, 2019 3:40 pm
Forum: Advanced users
Topic: MQ Gas sensor wire connection
Replies: 3
Views: 304

Re: MQ Gas sensor wire connection

I don't know much about gas sensors. But I think Circuits.io is correct/safe. It's a risk to take :| . And don't blame me if anything goes wrong.
by Icosagon
Thu May 02, 2019 3:32 pm
Forum: Troubleshooting
Topic: Raspberry Pi 2 died wile connecting a relay module
Replies: 13
Views: 459

Re: Raspberry Pi 2 died wile connecting a relay module

Dont do anything dangerous with your raspberry pi as it could get damaged even by connecting and led :| . You should try to stick with the Pi's Micro USB.
by Icosagon
Thu May 02, 2019 3:29 pm
Forum: Troubleshooting
Topic: Raspberry Pi 2 died wile connecting a relay module
Replies: 13
Views: 459

Re: Raspberry Pi 2 died wile connecting a relay module

Did it work :?:

Why cant you use a buck to buck converter for that. You should provide voltage higher than 5v eg:12v. It will convert 12v into 5v. Buck to Buck converter to usb is available so you can use it as an normal power bank. Its much safer to power pi that way :D .
by Icosagon
Thu May 02, 2019 3:23 pm
Forum: Automation, sensing and robotics
Topic: Make a real robot
Replies: 18
Views: 1599

Re: Make a real robot

Anyway Thanks Guys I found sockets in python which allow me to do this. I'll try to stick with sharp develop python for the client side. and for the AI I will try to use OpenCV and any if else statements for navigation. I make it AI one day 8-) . I let you guys know when I have done the project :) ....
by Icosagon
Thu May 02, 2019 4:43 am
Forum: Automation, sensing and robotics
Topic: Make a real robot
Replies: 18
Views: 1599

Re: Make a real robot

Ok Thanks Guys

But is there a way to two way talk between raspberry and computer. I only found ssh but implementing client side is difficult. Any other ways of controlling the robot other than web browser :D ?
by Icosagon
Tue Apr 30, 2019 3:16 pm
Forum: Automation, sensing and robotics
Topic: Make a real robot
Replies: 18
Views: 1599

Re: Make a real robot

Yes Andyroo I'm after a wondering robot which wanders here and there in a building. I didn't find any good resources or libraries to start learning how to make this. I'm planning to use accelerometer and gyroscope for navigation and i can't buy gps (because they are not cheap and not accurate). Ther...
by Icosagon
Tue Apr 30, 2019 2:47 pm
Forum: Automation, sensing and robotics
Topic: Make a real robot
Replies: 18
Views: 1599

Re: Make a real robot

Thanks PiGraham

I'll look into into. But I'm not trying to control it using voice. I want to control it from another computer. Not with VNC, With a dedicated program using ssh. The AI is very confusing.
by Icosagon
Tue Apr 30, 2019 2:29 pm
Forum: Automation, sensing and robotics
Topic: Make a real robot
Replies: 18
Views: 1599

Re: Make a real robot

Thanks Guys,
I expected the same answer . I am really confused how to start and there is no one to help me. I'll try ask another forum.
by Icosagon
Tue Apr 30, 2019 9:11 am
Forum: Automation, sensing and robotics
Topic: AI System like Alexa
Replies: 2
Views: 219

Re: AI System like Alexa

You should use an online speech to text convertor to get text https://tutorials-raspberrypi.com/build-raspberry-pi-voice-control-for-home-automation/ and convert text reply to speech using text to speech convertors (most of them works offline) I don't know to make AI but you can script the speech be...
by Icosagon
Tue Apr 30, 2019 9:08 am
Forum: General discussion
Topic: Robotic recycling bin project
Replies: 13
Views: 682

Re: Robotic recycling bin project

Hello Dave

I didnt mean to disappoint you but its hard to detect what garbage have been put.
If you use a camera to detect what waste have been put, it will be harder to recognize the garbage.
You'll have to use opencv to recognize garbage and train to recognize garbage
by Icosagon
Tue Apr 30, 2019 8:55 am
Forum: Automation, sensing and robotics
Topic: Sprint Timer
Replies: 10
Views: 775

Re: Sprint Timer

Hello K12adminguy

You can use ultrasonic eg: if a person passes near the ultrasonic the distance reading changes so you can say that a person passed.
and optionally you can use a 7 segment display to display the time, or even better a computer monitor.
by Icosagon
Tue Apr 30, 2019 8:50 am
Forum: Troubleshooting
Topic: Raspberry Pi 2 died wile connecting a relay module
Replies: 13
Views: 459

Re: Raspberry Pi 2 died wile connecting a relay module

Hello NSG650 I guess that the relay was clicking because when the raspberry pi boots its gpio pins are not programmed/ or dont know which state they were last, the gpios maybe high or low. You could have used arduino with raspberry to control the irrigation system :) What did you use to power the re...
by Icosagon
Tue Apr 30, 2019 8:38 am
Forum: Automation, sensing and robotics
Topic: Sump pump alarm
Replies: 4
Views: 399

Re: Sump pump alarm

Hello If you want to water measure water level you can use an ultrasonic sensor and for the alarm a motor driver. Motor driver is used for controlling heavy load items other than leds And you can use ssmtp to send email How to use Ultrasonic https://projects.raspberrypi.org/en/projects/physical-comp...

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