This is one of main points that is not emphasised By the Raspberry Pi , It is not PLUG & PLAY A very basic understanding of electronics is Very useful when using the Pi, You will have A better understanding of it’s power requirements IT is like buying a car when you can’t drive, Learn to drive first...
First get a understanding of basic electronics
And power supplies, There are lots of books on
Power supplies. You seem to know what you
Want, put unable to put it in to practice
Break your projects down, pick the simplest
Fist and see if you can complete that first
Amazing stuff, flour. Many years ago as a student I spent a couple of summers cleaning a mill on Birkenhead docks. Its explosive capabilities are rather over-rated - why else would the Chinese have invented gunpowder? (likewise diesel, compared to petrol - which would you rather throw a lighted mat...
My apology, i should have introduce my background a little bit. I have experience in PLC programming with Allen-bradley and Siemens, meaning I know all the basic in connecting switches and sensors. Also since I work with a System integrator, I have some experience with modbus serial communication. ...
I've been looking for a free Pi 3 B+ emulator I could use to code and test virtually but I'm getting very confused on what's available and whether it's even possible. I saw a similar question posted by ptimlin in Jan 2019 but appears the answer to that was No - but I'm not sure. I also saw that Pro...
This is a very ambitious project for a novice With no electronics experience, All the safety Problems you will encounter will have to be dealt with, Personnel fire risk, due to system failure I dought that your Insurance will cover a home Made system, Writing and talking about it, is Totally differe...
It is ok talking and readining about sensors
It is how to incorporate them in to a circuit
Is the main thing, More research in to your
Project is what you need, And some breadboard
Work on the use of sensors, and how to interface
Them with the Pi, The Pi is not plug and play’
Opening and closing the valve have nothing to do with the signal lines. There are 2 more lines to the valve carrying 24V that are used to open and close the valve. Also the valve stays in its open or closed state no matter what happens to the power. It is a ball valve not a solenoid. That is the pr...
Don’t wire the valve switch in the program loop
Keep it just to indicate valve open or closed
The valve will close with power failure , but will
Indicate position when power back on..
You will have to include the valve will only
Open if the program is running
I planned to use Salt until I get it all worked out. Agree on the breadboard. Salt is a much better idea. Flour and air can be a very explosive mixture. I picked flour it was the first thing that come in to my mind. As the most important thing on my mind Was the flow of Electrons in the project? Re...
You could use a slotted Opto Isolator as the As the scale switch, It can be easily mounted And made adjustable., The opto isolator Transistor can be used as a buffer stage To control a solid state relay and other Electronics on this project Set it all up on a breadboard, It will give you Some experi...
Is there a possibility of using Optic Fibres to Project the points on the weather map. Then Having the Tri colourer high bright LEDs Mounted on a rack with the Optic Fibres The LEDS could be very small, All the wiring Could be done on the rack. That would cover The hardware side. Then to design the ...
My advice is get the latest model Pi that is out A high power Pi will do all the low power projects With ease, Ware as you will be restricted power Wise with the low power Pi Remember the same Laws applies to both ( OHMS LAW) The same applie When picking a power supply . A high out/put Power supply ...
It might be possible to fit a 10ohm resistor In series with the main 5v in/put lead to the Pi, then using a multimeter to read the voltage Drop. Then using the difference between the readings to calculate the current when the code Is active. Might be worth a try use a high wattage Resistor Regards B...
If you use the Pi as it should be used, you don’t Need extra heat sinks or fans, Just use the Pi Low current to switch transistors and Opto isolators as buffer stages Such as voltage Levelling and current amplifying from a separate Power supply to run your project Regards BoyOh We need 1.5GHz and 4...
If you use the Pi as it should be used, you don’t
Need extra heat sinks or fans, Just use the Pi
Low current to switch transistors and
Opto isolators as buffer stages Such as voltage
Levelling and current amplifying from a separate
Power supply to run your project
You are using the forum to do the research for you
I hope you will donate your fee to charity, You should
Have said in the first place you are doing it for a
Re-seller, be fair give us the name of the re-seller
You are working for, so we can tell them It is not.
This project as a lot of draw backs to Compleat Due to the different types of lamps in use I think light detections is the best ( LDR) Current and voltage sensing might not be the Answerer due to some lights employ ballast Units and different controls , the current Could still be flowing, but the la...
If you are having difficulty understanding
The layout of the breadboard, use it as part
Of your learning curve . Using a multimeter
Set to continuity testing and two jumper wires
Then just use some Common Sense