hello i recently buyed PICAXE-40X2 micro (3V) http://194.201.138.187/epages/Store.storefront/?ObjectPath=/Shops/Store.TechSupplies/Products/AXE014X2-3V and i would like to know how many batteries should i use and what servo. thanx
check the X2 manual
It’s called picaxex2.pdf. Comes with the (latest) Picaxe prog editor. Page 3 “Low voltage operation”.
“The 28X2 and 40X2 are also available in a special 3V version, which operates from 1.8V to 3.6V. Note that using
5V on the 3V version will permanently damage it!
The low voltage options are known as 28X2-3V and 40X2-3V. It is recommended that these 3V parts are only
programmed via the AXE027 USB cable, as this uses logic level signals as opposed to RS232 (up to +/-12V) serial
signals.”
The servo should get the good old high voltage via V2. Mine work well at 5 V, but I never bothered to read their manuals. Four AA rechargeable NiMh batteries will give you 4.8 - 5.2 V, depending on charge status.
so we can use 4 aa to power
so we can use 4 aa to power it up? will the microcontroller work ?
Careful now…
That is not what I tried to explain. I tried to make you read the manual. And after that, you are more than welcome to ask me for any specific parts of the manual you do not understand.
Be careful: your micro will burn up, on 4x AA batteries.
Well i have already read a
Well i have already read a part of the manual and i see that it says that more than 3.6V it will burn my Micro.
My problem is that if i give to the Board 3.3V how the rest adds will work (like servo) ??
Also the Manual is Genarly Made for 4.5Volt and it have a small exeption at the page u said is it another manual for the specific edition??
Right now i have a 3x AA bat (Rechargeable which are not 1.5 (like the rest) but 1.2) { 3 x 1.2 = 3.6} so 3.6 is the max should i reduce it with a resistor a bit to be sure or it will be fine also what num of amber should the rechargable bat should be ??
If you read the manual it
If you read the manual it tells how to use a secondary power source to power other components that require a higher voltage.
http://www.rev-ed.co.uk/docs/
http://www.rev-ed.co.uk/docs/picaxe_manual1.pdf how? i cant find it in there
we have the picaxe x2 3volt
we have the picaxe x2 3volt i searched in manual and i coudnt find it how do i use a v2 it would
be nice if someone could help
http://www.rev-ed.co.uk/docs/AXE022.pdf manual our board (it dont mention
about v2)
http://www.rev-ed.co.uk/docs/AXE020.pdf manual of
another board (whole notes about v2)
Have a look at Frits’ guide
Have a look at Frits’ guide to picaxe. https://www.robotshop.com/letsmakerobots/node/75
Oh wait just realised you have a different board. Look at this data sheet: http://www.rev-ed.co.uk/docs/AXE022.pdf
OK, I understand your problem now
I just compared the two manuals you linked. Linking your manuals in your forum post is always good. Keep doing that.
The board you bought is very different from the one I have and most of us here have. That’s causing extra confusion. Your board (axe022) does not have any facilities for a second power voltage. And the manual for it does not explain what to do with a 3 Volt version of the micro controller.
I assume you are not using the LM7805 voltage regulator (or any other regulator). So you must rely on your batteries to provide exactly 3 V for the controller. Three AA rechargeable batteries may be a little over 3 V. Two may be a little under 3 V. Check for yourself what is the best choice. Start safe, start with just two. Make your controller work first. Worry about the servo later. Make sure you can program your picaxe and program a pin to go from high to low and back. Use an LED or a multimeter to prove you’re successful.
Celebrate at this point and understand what you’ve just done. Only now start worrying about the servo.
As for the servo. It has three wires. One is the signal wire. Hook that up to the servo pin on the controller. It will feed the pulses (3 V) into the servo logic inside the servo case. The other two wires are ground and V+. Connect these to a separate power supply of 5 Volt. four AA rechargeables will be enough. Five of them will not damage the servo either.
Finally, make sure to connect the negative wires from both power supplies to each other. This is called a “common ground”. This makes sure that the 5 V supply really is exactly 2 V higher than the 3 V supply.
So u mean to conect the +V (positive) to 6volt bat, the info chi
So u mean to conect the +V (positive) to 6volt bat, the info with the Chip (40x2 3v { i mean in the corect position as manual says}). Now about the ground u mean to connect it to 6volt bat?
circuit
Why don’t you draw me a circuit as you think it should work. I will just nod or shake my head at my computer.
**RTM RTFM RTMFM **
look for the manual called x2, since you have an X2 board.
I haven’t read it, since I don’t have an X2, but aren’t there something called V2, which means something like “the other voltage”?
Cant u just saw me the
Cant u just saw me the correct way cause i have said im a bit new with the Robot. I only have work on other circuit.
to rikQUOTE:
to rik
QUOTE: ___________________
I just compared the two manuals you linked. Linking your manuals in your forum post is always good. Keep doing that.
The board you bought is very different from the one I have and most of us here have. That’s causing extra confusion. Your board (axe022) does not have any facilities for a second power voltage. And the manual for it does not explain what to do with a 3 Volt version of the micro controller.
I assume you are not using the LM7805 voltage regulator (or any other regulator). So you must rely on your batteries to provide exactly 3 V for the controller. Three AA rechargeable batteries may be a little over 3 V. Two may be a little under 3 V. Check for yourself what is the best choice. Start safe, start with just two. Make your controller work first. Worry about the servo later. Make sure you can program your picaxe and program a pin to go from high to low and back. Use an LED or a multimeter to prove you’re successful.
Celebrate at this point and understand what you’ve just done. Only now start worrying about the servo.
As for the servo. It has three wires. One is the signal wire. Hook that up to the servo pin on the controller. It will feed the pulses (3 V) into the servo logic inside the servo case. The other two wires are ground and V+. Connect these to a separate power supply of 5 Volt. four AA rechargeables will be enough. Five of them will not damage the servo either.
Finally, make sure to connect the negative wires from both power supplies to each other. This is called a “common ground”. This makes sure that the 5 V supply really is exactly 2 V higher than the 3 V supply.
______________________________________________________________________________________END OF QUOTE
sounds good can u draw a simple circuit (about how to connect srvo;s) ? if not thats ok you already helped alot
I d like to ask u smthng
I d like to ask u smthng else u said every1 have another Board which have v2( i have read about v2 and i know what is now) but at the Picaxe site there isnt 1 for My chip PICAXE-40X2 micro (3V), so do u know where i can find it??
I understand fully ur Explain above, Thnx
Maybe like this?
Try something like this:
connect all the minus/black/grounds together.
connect the positive microcontroller voltage to the microcontroller.
connect the positive servo voltage to the servo.
connect the Yellow or White signal wire from the servo to the output pin on your microcontroller.
And if blue smoke appears, you can always blame 8ik or MSPaint
ok that sounds nice thanx
ok that sounds nice thanx for the drawing but what if we want to install another sensor that uses for isstance 6v
thanx
same thing
Same thing.
Just connect the signal wire from the sensor to the correct input in the microcontroller.
connect all the minus/black/grounds together.
connect the positive microcontroller voltage to the microcontroller.
connect the positive sensor voltage to the sensor.
Use the same diagram as above just write SENSOR where it says SERVO…
ok thanx
ok thanx