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by omegaman477
Tue Apr 09, 2019 3:20 pm
Forum: Automation, sensing and robotics
Topic: Mechanical unit automation
Replies: 7
Views: 527

Re: Mechanical unit automation

Hello folks. Not sure if I'm posting in the right area but here it goes. The company I work for is looking to use the raspberry pi in one of our projects. We essentially need to cut off power to a mechanical unit during predetermined times. We would need to have a calendar schedule of some sorts to...
by omegaman477
Tue Apr 09, 2019 3:15 pm
Forum: Automation, sensing and robotics
Topic: Bluetooth or Wifi module?
Replies: 3
Views: 203

Re: Bluetooth or Wifi module?

I will use 2 Arduino to gather data then send it to the raspberry pi. 2 Arduino are just 2 meters away from raspberry pi. What should I use? can the Bluetooth provide a full duplex communication? Any answers and opinion will help. Thanks Either will work, but consider; The limited 30m range of Blue...
by omegaman477
Tue Apr 09, 2019 3:06 pm
Forum: Automation, sensing and robotics
Topic: Rc car from a toy car
Replies: 2
Views: 305

Re: Rc car from a toy car

Hello. Am willing to do a school project which i chose to be an autonomous RC car using both arduino and raspberry pi and I really need the help to connect the car to the arduino/raspi so i was wondering if there were any video that explains how to setup the car to the arduino ( the probes and all ...
by omegaman477
Tue Apr 09, 2019 3:02 pm
Forum: Automation, sensing and robotics
Topic: Septic/Sump Automation Project
Replies: 5
Views: 500

Re: Septic/Sump Automation Project

I live in an area that occasionally floods after a bad storm or heavy snow melt and my septic and sump pumps struggle to keep up. I decided to automate my monitoring and stumbled upon the Raspi-Sump project (https://www.linuxnorth.org/raspi-sump/). All tested well and I got it working. I'm even mod...
by omegaman477
Tue Apr 09, 2019 2:44 pm
Forum: Automation, sensing and robotics
Topic: Need help making on/off switch with gpio shutdown
Replies: 2
Views: 313

Re: Need help making on/off switch with gpio shutdown

Hello guys, I'm medium experience raspberry enthusiast. I really enjoy what pi3B+ offers(hardware, software, documentation), but there's one thing I cant figure out. I want make proper power on/power off module for raspberry pi 3B+. However gpio shutdown or pin RUN, functions more like desktop powe...
by omegaman477
Tue Apr 09, 2019 2:36 pm
Forum: Automation, sensing and robotics
Topic: Iot based color sorting machine
Replies: 1
Views: 360

Re: Iot based color sorting machine

I am working on Project in where I want to sort products based on color. I am using 2 servo motor and a color sensor for that (TCS 3200). First motor is for just sliding and second is for setting angles as per detected color . i am also adding telegram bot to this . i am new to python and raspberry...
by omegaman477
Tue Apr 09, 2019 2:25 pm
Forum: Automation, sensing and robotics
Topic: Defining Gps Area
Replies: 5
Views: 382

Re: Defining Gps Area

Dear reader, I was wondering if there is any software to define a certain area with Gps coordinates. I would like to make some progress with my rc car project which should drive around in our backyard but should not exit this certain area. If it does it should turn and drive back. I already finishe...
by omegaman477
Tue Apr 09, 2019 2:20 pm
Forum: Automation, sensing and robotics
Topic: 26 GPIO to drive 26 Optocoplers
Replies: 17
Views: 1462

Re: 26 GPIO to drive 26 Optocoplers

Hello to all I have read that the PI 3 B+ has 26 GPIO and that they can be reprogrammed (is that true?) than my question will be Can I use all 26 GPIOs (GPIO 2,3,4,17,27,22,10,9,11,5,6,13,19,26,21,20,16,12,7,8,25,24,23,18,15,14) (Pins 3,5,7,11,13,15,19,21,23,29,31,33,35,37,8,10,12,16,18,22,24,26,32...
by omegaman477
Fri Mar 29, 2019 11:44 pm
Forum: Automation, sensing and robotics
Topic: Is implementing stepper motor movement possible with my code?
Replies: 2
Views: 305

Re: Is implementing stepper motor movement possible with my code?

Hi :) I'm new to python and linux so bare with me. I am trying to move 3 stepper motors with a PS4 controller. I've been able to move the motor after studying this helpful post by ROTOTRON - https://www.rototron.info/raspberry-pi-stepper-motor-tutorial/ so I know my wiring is right. I can read all ...
by omegaman477
Fri Mar 29, 2019 11:42 pm
Forum: Automation, sensing and robotics
Topic: Proportional valves and Raspberry Pi
Replies: 2
Views: 289

Re: Proportional valves and Raspberry Pi

Hi forum, I need to use a proportional valve for controlling some air flow. I found some information here about solenoid valves, e.g. two positions: closed or opened. However, I didn't find detailed information about controlling a proportional valve. I found a valve that would fit my needs (see pag...
by omegaman477
Fri Mar 29, 2019 4:18 pm
Forum: Automation, sensing and robotics
Topic: Know where I can get reasonably priced DPST/DPDT 240v/8a to 240v/10a relays?
Replies: 16
Views: 1262

Re: Know where I can get reasonably priced DPST/DPDT 240v/8a to 240v/10a relays?

I find you cant go past either Banggood or AlliExpress. BOth source from China, so its cheap, but quality is always unknown. As you need 16 relays, I would buy singles from 2-3 vendors and test them out. You are wise to overrate the relays, as a general rule I always double the relay rating for AC, ...
by omegaman477
Fri Mar 22, 2019 4:19 pm
Forum: Networking and servers
Topic: Using a Network Computer as a Master Clock
Replies: 8
Views: 3637

Re: Using a Network Computer as a Master Clock

I followed these directions but I get "when" - and "reach" 0 I am trying to get the time from a laptop connected through ethernet cable on which the process w32tm has been setup as timeserver. I have made sure the port (123) on my network is open (allowing traffic from and to my laptop). However th...
by omegaman477
Fri Mar 22, 2019 4:07 pm
Forum: Other projects
Topic: DIY Watercooled Pi
Replies: 1
Views: 4663

Re: DIY Watercooled Pi

I used a water cooling kit for a recent industrial RPi project where the RPi was in a seal enclosure (for dust and water) in a very hot environment (40ºC average) and as high as 45ºC in summer. The radiator and fan are outside the case. Its work a treat, CPU temp doesnt shift a degree all year round...
by omegaman477
Fri Mar 22, 2019 9:07 am
Forum: Automation, sensing and robotics
Topic: connecting multiple sensors
Replies: 3
Views: 361

Re: connecting multiple sensors

Either look for sensors that connect via i2c, or as suggested, you will need to multiplex the analogue signals, or install many ADC units.

Its all a function of what response times and scan rates you are needing.
by omegaman477
Fri Mar 22, 2019 9:05 am
Forum: Automation, sensing and robotics
Topic: Boules
Replies: 4
Views: 291

Re: Boules

Use a high contrast IR filter on the camera lens and they should shine like crazy. At night you will need IR illumination from some IR leds.
by omegaman477
Fri Mar 22, 2019 9:03 am
Forum: Automation, sensing and robotics
Topic: 16x2 I2C LCD with Keyboard Shield
Replies: 2
Views: 154

Re: 16x2 I2C LCD with Keyboard Shield

Some basic steps to check; You have read one of the many 'Enabling i2c on a raspberry tutorials You have enabled I2C in the RPI firmware Run sudo raspi-config You have the correct libraries loaded sudo apt-get install python3-smbus i2c-tools You can see the LCD display via i2c-tools i2cdetect -y 1 A...
by omegaman477
Fri Mar 22, 2019 8:54 am
Forum: Automation, sensing and robotics
Topic: RS232 Data and create file on shared drive
Replies: 1
Views: 134

Re: RS232 Data and create file on shared drive

Very easy, two step; Firstly, use the Python Library pySerial to manage the serial ports etc. I am assuming your data is Asynchronous RS232, terminated with CRLF. Example: Open named port at “19200,8,N,1”, 1s timeout: >>> with serial.Serial('/dev/ttyS1', 19200, timeout=1) as ser: ... x = ser.read() ...
by omegaman477
Fri Mar 15, 2019 11:57 am
Forum: Automation, sensing and robotics
Topic: Sound Sensor to catch a specific noise a saw motor gives off?
Replies: 13
Views: 964

Re: Sound Sensor to catch a specific noise a saw motor gives off?

Yes response time are extremely important!! I was going to use this mems microphone IMP34DT05TR with the raspberry pi 2 b+ this device has a 64 dB signal-to-noise ratio which will help reliable signals being measured. You mentioned "The analogue amp and level detector is very simple circuitry I cou...
by omegaman477
Fri Mar 15, 2019 11:42 am
Forum: Automation, sensing and robotics
Topic: Sound Sensor to catch a specific noise a saw motor gives off?
Replies: 13
Views: 964

Re: Sound Sensor to catch a specific noise a saw motor gives off?

**********You mentioned that another approached could be achieved using a "smarter" and by this do you me an ADC or DSP? DSP concepts, rather than a full dedicated hardware DSP. A basic ADC that sends the RPI a PCM stream, can be analysed in software for basic characteristics like frequency and amp...
by omegaman477
Fri Mar 15, 2019 11:38 am
Forum: Automation, sensing and robotics
Topic: Hitachi air-con control and Pi IR - using python
Replies: 5
Views: 537

Re: Hitachi air-con control and Pi IR - using python

There is a Linux Infrared Library called LIRC which contains about 2500 consumer devices, including yours.

There is a python binding library for LIRC called python-lirc. See here https://pypi.org/project/python-lirc/

Adafruit make a module that takes the hard work out of the timing.
by omegaman477
Wed Mar 13, 2019 3:52 pm
Forum: Automation, sensing and robotics
Topic: Brian the robot
Replies: 5
Views: 421

Re: Brian the robot

If your going to use RC Servos for the arms, which I agree with, to save motor interfacing, consider continuous servos for the propulsion. They are cheap and there is a huge array of wheels designed for their shafts. Most are reversible. They are just like a servo except the spin constantly at a spe...
by omegaman477
Wed Mar 13, 2019 3:45 pm
Forum: Automation, sensing and robotics
Topic: Sound Sensor to catch a specific noise a saw motor gives off?
Replies: 13
Views: 964

Re: Sound Sensor to catch a specific noise a saw motor gives off?

I have discussed similar applications recently, search my content log. However, I agree with the others, doing this acoustically through the air will be next to impossible, and at best require some serious hard core DSP work to isolate the sounds. As an alternative, glue a small cheap microphone ele...
by omegaman477
Wed Mar 13, 2019 3:04 pm
Forum: Automation, sensing and robotics
Topic: How to register high voltage switching?
Replies: 2
Views: 279

Re: How to register high voltage switching?

Hi guys, I have few electric equipment. I would like to log when these equipment are turned on and turned off. How would you do this? I can handle the code but I don't have any idea what to use to connect the Raspberry Pi to. I need some kind of sensor to connect it to the on/off switch. I could us...
by omegaman477
Thu Mar 07, 2019 9:43 am
Forum: Automation, sensing and robotics
Topic: Simens Simatic S7-300 to Rasyberry pi
Replies: 1
Views: 386

Re: Simens Simatic S7-300 to Rasyberry pi

I have a unique problem. in that I had a automation setup though Siemens and had 6x Simatic S7-300 communication devices that where hooked up with 300 different sensors. I lost the servers that ran on a RS-485 system and the systme was controlled though an Ethernet connected to the servers. I was a...

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