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by ptimlin
Sun Jan 20, 2019 2:12 am
Forum: Beginners
Topic: Relay swap
Replies: 9
Views: 433

Re: Relay swap

Just wanted to point out in case you were not aware, most SSRs are meant to drive AC loads. Because they use triacs usually, if you try to run a DC load, you can turn on the DC load but it will never turn off. So hopefully you are planning on controlling an AC power source for you LED strips.
by ptimlin
Sat Jan 19, 2019 12:32 am
Forum: Beginners
Topic: Servo without breadboard
Replies: 16
Views: 1273

Re: Servo without breadboard

Ah I see. That board looks pretty easy for controlling a bunch of hobby servos. However, here is where I see the issue. A lot of those servos do not do continuous spinning. Many only move from 0° to 180° and back. A few will do 360° but you have to come back after 360, you can not go around again. S...
by ptimlin
Fri Jan 18, 2019 4:04 pm
Forum: Beginners
Topic: Servo without breadboard
Replies: 16
Views: 1273

Re: Servo without breadboard

There are a number of ways to do this. Problem is I don't know of any off the shelf modules that will handle all the various inputs and outputs you will need without some level or wiring and interconnects. Do you have experience with this sort of thing (like soldering parts onto a perf board, wiring...
by ptimlin
Tue Jan 15, 2019 10:13 pm
Forum: Beginners
Topic: Servo without breadboard
Replies: 16
Views: 1273

Re: Servo without breadboard

I would even suggest that a servo motor is not the best choice for this task. For opening and closing blinds I would say a basic low RPM DC gear motor with limit switches for open and closed would do the job.
by ptimlin
Tue Jan 15, 2019 9:03 pm
Forum: Beginners
Topic: Servo without breadboard
Replies: 16
Views: 1273

Re: Servo without breadboard

A motor like that will require drive circuitry to provide the higher current that simply can not be supplied directly from the Pi board. The GPIO on the Pi can source or sink a max of about 17mA. That motor uses 10 times that amount just to spin the motor with no load (not even connected to your bli...
by ptimlin
Mon Jan 14, 2019 6:11 pm
Forum: Python
Topic: GPIO Pin Configuration
Replies: 1
Views: 411

Re: GPIO Pin Configuration

Hi, I am brand new to Raspnberry Pis as well as Python, but I am trying to learn and part of that is reading some of these posts to see what I can learn from them. Anyway... Don't you need to first import your GPIO library? import RPi.GPIO as GPIO More info can be found here... https://sourceforge.n...
by ptimlin
Sun Jan 13, 2019 3:55 am
Forum: HATs and other add-ons
Topic: Interface boards for Quadrature Encoders
Replies: 3
Views: 662

Re: Interface boards for Quadrature Encoders

You may have to make your own. If prototyping is an issue with the chip you mentioned perhaps something like the old HCTL-2016 might work for you. You will need one per axia and is 16 bit, but comes in a good old protoboard friendly DIP package.
by ptimlin
Thu Jan 10, 2019 7:02 pm
Forum: Beginners
Topic: Simulating the Pi board GPIO
Replies: 10
Views: 808

Re: Simulating the Pi board GPIO

Maybe have a look at WiringPi ? From the website... " is intended for use by experienced C/C++ programmers. It is not a newbie learning tool." so certainly not for me. ;) Save space and stick one of these on the top of the Pi https://shop.pimoroni.com/products/explorer-hat Looks like that one would...
by ptimlin
Wed Jan 09, 2019 8:02 pm
Forum: Beginners
Topic: Simulating the Pi board GPIO
Replies: 10
Views: 808

Re: Simulating the Pi board GPIO

Thank you all for your replies. Looks like I will just do it the old fashioned way and hook up some LEDs and SWs to the Pi.
by ptimlin
Tue Jan 08, 2019 10:04 pm
Forum: Beginners
Topic: Simulating the Pi board GPIO
Replies: 10
Views: 808

Re: Simulating the Pi board GPIO

I suppose I should have also mentioned I have an Electrical Engineering degree so I have no issue with physical hardware and how to hook it up. I was just hoping there might be a virtual Raspberry Pi simulator for times when I want to play with code for when I don't have Pi hardware with me or simpl...
by ptimlin
Tue Jan 08, 2019 9:58 pm
Forum: Python
Topic: gps from android phone
Replies: 7
Views: 1193

Re: gps from android phone

I was thinking to connect my raspberry pi to my phone with bleutooth or wifi direct so wireless but not online, I have to be able to connect everywhere. Even if I'm not online. So it sounds like you will be manually sending the location to your Pi then? There are a top of GPS apps for Android where...
by ptimlin
Tue Jan 08, 2019 8:29 pm
Forum: Python
Topic: gps from android phone
Replies: 7
Views: 1193

Re: gps from android phone

Hi brand new to the board and Raspberry Pi, but my first question back to you, which I am sure the more experienced users will have, is how do you want to get the data from the Android to the Pi? Do you want to physically couple the two devices together with a USB cable? Were you hoping to Bluetooth...
by ptimlin
Tue Jan 08, 2019 8:16 pm
Forum: Beginners
Topic: Simulating the Pi board GPIO
Replies: 10
Views: 808

Simulating the Pi board GPIO

Hello, Brand new to the Raspberry Pi and have just started to teach myself Python with the intention of using the Pi on a couple home electronic projects. Is there any sort of software simulator to represent the Pi HW, specifically the GPIO and other pins on that connector, when developing code? I w...

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