120ThingsIn20Years
Senior Member
This is my first post so be gentle with me.
I'm sorry for asking such a vague question for my first post, but I'm reading the manuals, and threads, trying to put together my shopping list for my first ever venture into electronics. (I'm 44yo as well just to make things worse)
My first projects are likely to be based around my veggie garden in a glass house. I have a deep cycle 12 volt 200 amp hour lead acid battery that I run (via an inverter) as a fail-safe against power outages for pumps and air for an aquaponics* system.
I'd like to run some servos (to open vents), fans, fish feeders, pump timers and a zillion other things from the 12 volt supply.
(I have very limited finances, so take that into account with any advice)
I'm thinking ...
The development starter pack AXE091U to prototype stuff and try to learn this electronics caper.
High power project board for use out in the glasshouse.
And perhaps (if I understand this correctly) as a way to control the high power project board...
PICAXE-28X2 Module (AXE200/AXE201)
The 28X2 module is a complete PICAXE circuit in convenient 28 pin (0.6” wide)
DIL package. The module is designed to be placed in a ‘turned pin’ style IC
socket on the end user project board (e.g. socket part ICH028W)
And that says about itself ...
Power
Power can be supplied at 7-12V DC via pin 28. This is then regulated on-board
via a 5V 500mA low drop out regulator. The 5V output is available at pin 25.
Alternately a 4.5V or 5V supply can be connected directly to pin 25, leaving pin
28 unconnected
Does this mean I can power my project from my existing 12 volt deep cycle battery. My battery says it's a 12 volt battery, but lead acid batteries being what they are, I often see voltages of closer to 14 volts. Will this fry my device? Or is this a suitable power supply for this board?
As you can no doubt tell, I am totally new to this (I could perhaps build a torch on a good day, but couldn't make it it turn itself on automatically when it got dark)
If that is a suitable starting point for the glasshouse project, can I tap into the 5 volt pin to power the High power project board's control side, and then add a 12 volt supply from the 12 volt battery to the motor power side. (I have no idea if this question is even making sense WHAT AM I THINKING GETTING INTO THIS STUFF!
I don't really understand why a 14 volt battery is called a 12 volt battery.
So in short, and to recap...HELP!
And if anyone is still feeling generous after all that, I cant find an answer to this...
Does a resistor waste voltage, like a leak in a hose, or does it restrict voltage like a tap?
Anyone want to become a mentor to an old guy, or does anyone have some spare stem cells and a "grow yourself an extra brain" kit they no longer need.
-Bullwinkle II
*growing fish for the plate, with fish waste feeding veggies hydroponically in a closed loop as far as water goes in a small scale backyard grow house (inputs are sun, air, fish feed, and a bit of water)
I'm sorry for asking such a vague question for my first post, but I'm reading the manuals, and threads, trying to put together my shopping list for my first ever venture into electronics. (I'm 44yo as well just to make things worse)
My first projects are likely to be based around my veggie garden in a glass house. I have a deep cycle 12 volt 200 amp hour lead acid battery that I run (via an inverter) as a fail-safe against power outages for pumps and air for an aquaponics* system.
I'd like to run some servos (to open vents), fans, fish feeders, pump timers and a zillion other things from the 12 volt supply.
(I have very limited finances, so take that into account with any advice)
I'm thinking ...
The development starter pack AXE091U to prototype stuff and try to learn this electronics caper.
High power project board for use out in the glasshouse.
And perhaps (if I understand this correctly) as a way to control the high power project board...
PICAXE-28X2 Module (AXE200/AXE201)
The 28X2 module is a complete PICAXE circuit in convenient 28 pin (0.6” wide)
DIL package. The module is designed to be placed in a ‘turned pin’ style IC
socket on the end user project board (e.g. socket part ICH028W)
And that says about itself ...
Power
Power can be supplied at 7-12V DC via pin 28. This is then regulated on-board
via a 5V 500mA low drop out regulator. The 5V output is available at pin 25.
Alternately a 4.5V or 5V supply can be connected directly to pin 25, leaving pin
28 unconnected
Does this mean I can power my project from my existing 12 volt deep cycle battery. My battery says it's a 12 volt battery, but lead acid batteries being what they are, I often see voltages of closer to 14 volts. Will this fry my device? Or is this a suitable power supply for this board?
As you can no doubt tell, I am totally new to this (I could perhaps build a torch on a good day, but couldn't make it it turn itself on automatically when it got dark)
If that is a suitable starting point for the glasshouse project, can I tap into the 5 volt pin to power the High power project board's control side, and then add a 12 volt supply from the 12 volt battery to the motor power side. (I have no idea if this question is even making sense WHAT AM I THINKING GETTING INTO THIS STUFF!
I don't really understand why a 14 volt battery is called a 12 volt battery.
So in short, and to recap...HELP!
And if anyone is still feeling generous after all that, I cant find an answer to this...
Does a resistor waste voltage, like a leak in a hose, or does it restrict voltage like a tap?
Anyone want to become a mentor to an old guy, or does anyone have some spare stem cells and a "grow yourself an extra brain" kit they no longer need.
-Bullwinkle II
*growing fish for the plate, with fish waste feeding veggies hydroponically in a closed loop as far as water goes in a small scale backyard grow house (inputs are sun, air, fish feed, and a bit of water)