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by PhatFil
Sun Jul 21, 2019 7:44 pm
Forum: Beginners
Topic: I am establishing a craft brewery and using PID temperature controllers
Replies: 2
Views: 64

Re: I am establishing a craft brewery and using PID temperature controllers

sounds like the 'alarm' is simply the output of a standard relay offering you COM, NC and NO terminals. (sestos, inkbird or auber pid perhaps?) in which case you can simply wire the COM terminal to either 3.3v or gnd and the NO terminal to a suitable gpio for your pi s/w to monitor, a pull up or pul...
by PhatFil
Sun Jul 21, 2019 7:02 pm
Forum: Advanced users
Topic: Powering down remotely
Replies: 5
Views: 114

Re: Powering down remotely

use a tasmota re-flashed smart switch, and host a mqtt broker on the pi-0. that way you can use the pi to shutdown safely and power off the socket or visa versa hit the smart socket button and it will signal the pi to shutdown and wait 40 secs or so before cutting power.. https://github.com/arendst/...
by PhatFil
Sat Jul 20, 2019 8:58 pm
Forum: General discussion
Topic: Need a cheap solution to power my Raspberry Pi (Non-AC)
Replies: 5
Views: 145

Re: Need a cheap solution to power my Raspberry Pi (Non-AC)

Whats the task you want to put the Pi to work at? use will dictate which if any power saving strategies could be applicable. for example if needed to collect data once every hour a cheap device like an attiny could be used to wake (power up) the pi once an hour so it can perform its job and shutdown...
by PhatFil
Fri Jul 19, 2019 6:11 am
Forum: Automation, sensing and robotics
Topic: Use Regular Light Switch To Run Script on Pi When Flipped
Replies: 7
Views: 178

Re: Use Regular Light Switch To Run Script on Pi When Flipped

What does the wiring look like on the gpio? The light switch has positive, negative and neutral. Strange Positive and negative are generally dc voltage designations, while neutral is a designation usually used for an a/c mains terminal? But i am about as far from an electrician as you can get, so ?...
by PhatFil
Fri Jul 19, 2019 5:29 am
Forum: General discussion
Topic: Pi4 Cooling
Replies: 23
Views: 1249

Re: Pi4 Cooling

Im interested to read how pi4.4gb works within the metal flikr case.. I may eventually be able to tell you, but my Flirc case is currently even further back-ordered than my Pi 4.4! :) Hope the micro hdmi cable/s are also on order/in your bits drawer if needed ;) IM sure its gonna be worth the wait....
by PhatFil
Fri Jul 19, 2019 5:26 am
Forum: Beginners
Topic: Java?
Replies: 2
Views: 76

Re: Java?

java should be installed but it may be an earlier version than your app needs??

look for openjdk..

if you need to update java for your app this may help..
https://lazyadmin.nl/home-network/raspb ... va-update/
by PhatFil
Fri Jul 19, 2019 5:06 am
Forum: General discussion
Topic: From where should i download raspbian stretch with desktop and raspbian stretch with desktop and recommended software
Replies: 9
Views: 154

Re: From where should i download raspbian stretch with desktop and raspbian stretch with desktop and recommended softwar

This labors the obvious but the files you want are right here...this page. If you open the 3 heavy lines at the extreme right-top of this page, you will see on the left a large band marked "Downloads". Select that and follow the instructions. This has all been changed recently, not for the better I...
by PhatFil
Fri Jul 19, 2019 4:54 am
Forum: General discussion
Topic: is JB weld good idea to attach HeatSink to 4b ?
Replies: 7
Views: 313

Re: is JB weld good idea to attach HeatSink to 4b ?

Its a bit of a PERMANENT solution! How confident are you that this particular heatsink is the last option you will possibly want to try? will it fit/function in every case/enclosure your pi could live in? heatsink compound and thermal pads are not very expensive unless you buy premium products, and ...
by PhatFil
Fri Jul 19, 2019 1:40 am
Forum: Automation, sensing and robotics
Topic: Use Regular Light Switch To Run Script on Pi When Flipped
Replies: 7
Views: 178

Re: Use Regular Light Switch To Run Script on Pi When Flipped

In that case, Yes.. the difference between a button and a switch may be obvious But most examples and how-to's you will find online will use momentary contact buttons and the logic will be geared towards detecting short button presses rather than continual connections and disconnections. 'Latching B...
by PhatFil
Fri Jul 19, 2019 12:04 am
Forum: Off topic discussion
Topic: 1TB microSD Card is real!
Replies: 16
Views: 543

Re: 1TB microSD Card is real!

Still kinda cool tho..

I once got an overdraft to pay for 512kb of ram.. probably more storage in a disposable audio b'day card these days..
by PhatFil
Thu Jul 18, 2019 7:58 pm
Forum: General discussion
Topic: Pi4 Cooling
Replies: 23
Views: 1249

Re: Pi4 Cooling

Im interested to read how pi4.4gb works within the metal flikr case..
by PhatFil
Wed Jul 17, 2019 9:43 pm
Forum: Deutsch
Topic: Aktion wenn sich Smartphone mit WiFi verbindet
Replies: 3
Views: 103

Re: Aktion wenn sich Smartphone mit WiFi verbindet

add in further logic to check if its 'hometime' or an applicable time of the day to automatically open the door..

you could also use b/tooth instead, that way you could turn the feature on/off with B/tooth
by PhatFil
Wed Jul 17, 2019 3:22 pm
Forum: Other projects
Topic: RPI cooling while sealed in a plastic case...
Replies: 11
Views: 5879

Re: RPI cooling while sealed in a plastic case...

fwiw i use a pi-0-w to host my home automation systems one aspect of which is the patio plant care system reporting/logging temperatures soil moisture content light levels and electroconductivity of the soil and automatically watering via small pumps and drain to sump system.
by PhatFil
Tue Jul 16, 2019 1:29 pm
Forum: Troubleshooting
Topic: Autonomous commands execution
Replies: 5
Views: 125

Re: Autonomous commands execution

Yes put your commands in a bash script file, make it executable and give permissions to any users that need it. (GOOGLE/SEARCH 'Make bash script executable Raspberry Pi' ) to schedule your script to run at startup, before shut down, or at a specified time use cron (GOOGLE/SEARCH 'Raspberry Pi cronta...
by PhatFil
Tue Jul 16, 2019 1:14 pm
Forum: Wanted
Topic: Help Required with programming
Replies: 5
Views: 339

Re: Help Required with programming

check out the home automation community.. there are well established control/dashboard systems you can host on your pi perfect for your demands, using disperate small cheap wifi enabled soc dev boards and off the shelf wifi/bluetooth consumer products to provide input and output channels via wifi an...
by PhatFil
Sun Jul 14, 2019 10:23 pm
Forum: Deutsch
Topic: Outdoorbetrieb der Raspberry PI
Replies: 12
Views: 673

Re: Outdoorbetrieb der Raspberry PI

I Dont know if this will be of interest or useful to you ? But i have been using the sensors detailed in this project for over 18 months now and am just now needing to change batteries.. https://github.com/ThomDietrich/miflora-mqtt-daemon (querying cira every 30 minutes 24/7..) a practical broadcast...
by PhatFil
Sun Jul 14, 2019 7:53 pm
Forum: Compute Module
Topic: How to read data from HTU20D temp/humidity sensor
Replies: 2
Views: 99

Re: How to read data from HTU20D temp/humidity sensor

a quick glance over this project suggests its using c libs..
https://www.instructables.com/id/Detect ... berry-Pi-/
by PhatFil
Sun Jul 14, 2019 4:38 pm
Forum: Automation, sensing and robotics
Topic: UHI Monitor Station Project
Replies: 1
Views: 87

Re: UHI Monitor Station Project

Hi - just my take..
1) Yes certainly, but battery/solar requirements for a pi could be more expensive than for other options more suited to low power sleep/wake read and send/sleep cycles
2), 3) - sorry....
4) Now this is where the Pi should come into the project
by PhatFil
Sun Jul 14, 2019 3:35 pm
Forum: Troubleshooting
Topic: Installing drivers for WiFi antenna
Replies: 2
Views: 70

Re: Installing drivers for WiFi antenna

Linux compatibility often only refers to linux installed on x86 compatible h/w, and may not be suitable for arm based architecture. however using the prefix of the driver download file you linked to for a google search i did find this: https://edimax.freshdesk.com/support/solutions/articles/14000032...
by PhatFil
Sun Jul 14, 2019 3:17 pm
Forum: Automation, sensing and robotics
Topic: Hydroponics web interface
Replies: 10
Views: 768

Re: Hydroponics web interface

Xiaomi mi flower wont pair with raspberry pi 4. Not getting anywhere with getting this to work. I'm not really up on Linux, so struggling with all the instructions I've found on the subject. Best thing I can think of is if someone who has this already got this working could send me a an image of th...
by PhatFil
Sun Jul 14, 2019 12:20 pm
Forum: Beginners
Topic: (Possibly pre-beginner!) Sensing simple closed circuit.
Replies: 8
Views: 200

Re: (Possibly pre-beginner!) Sensing simple closed circuit.

Sounds like a fun project to cut your teeth on. As said above, avoid mixing mains and diy electronics as far as possible.. IT CAN BE LETHAL. Quite a few options are open to you though, a light sensitive resistor as suggested above is one. A PIR (passive infra red) or similar motion detector inside t...
by PhatFil
Sun Jul 14, 2019 1:45 am
Forum: Beginners
Topic: What wireless controller can I use?
Replies: 14
Views: 205

Re: What wireless controller can I use?

pick your favorite game console controller ps3/4 x box or the other one, and google how to hijack its signals by your pi.. why reinvent the wheel?
by PhatFil
Sat Jul 13, 2019 2:54 pm
Forum: Automation, sensing and robotics
Topic: Alexa Routine to publish MQTT to be picked up by RPi
Replies: 9
Views: 267

Re: Alexa Routine to publish MQTT to be picked up by RPi

For issuing basic 'Device_Name ON/OFF' type commands to stimulate Pi activity by Alexa/voice, I use Node-Red with the Alexa-local node. branching off a mqtt-publish node to publish any message would be a fairly trivial addition to any flow. a little creative thinking will let you create a set of ale...
by PhatFil
Thu Jul 11, 2019 8:21 pm
Forum: General discussion
Topic: Raspberry pi question (Adafruit’s servo bonnet, can I combine it with other HAT's?)
Replies: 9
Views: 315

Re: Raspberry pi question

I’m using the sensors and servos for a robotics project. So my final question is, what GPIO pins does the servo bonnet use. Thanks for the help from : https://www.adafruit.com/product/3416 The Adafruit 16-Channel 12-bit PWM/Servo Bonnet will drive up to 16 servos or PWM outputs over I2C with only 2...
by PhatFil
Mon Jul 08, 2019 11:56 pm
Forum: General discussion
Topic: Power Supply for multiple RAPI4B+
Replies: 7
Views: 371

Re: Power Supply for multiple RAPI4B+

I would suggest, look at 5V led switch mode psu's with a suitable amp overhead, https://www.amazon.co.uk/BTF-LIGHTING-Aluminum-WS2812B-LED8806-Modules/dp/B01D8FLWGE/ref=pd_lpo_sbs_23_t_1?_encoding=UTF8&psc=1&refRID=HH23B10NDHV9BDA5S6N6 perhaps? (**just an example not a recommended model/seller!!) ad...

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