did I see someone from the UK was looking for Hall sensors
Farnell do this one
£0.21 each :)
Type: Posts; User: mmcp42
did I see someone from the UK was looking for Hall sensors
Farnell do this one
£0.21 each :)
I did wonder if there would be any perception of conflict of interest
As I have a SuperPID (and very pleased with it I must say)
and to avoid any thought that its technology may influence anything...
timmyb
I strongly sugest you spend your learning effort with EAGLE instead of fritzing
you can go so much further with EAGLE
Also suggest you upgrade to the later Arduino IDE
all the libraries...
I was recommended these
been away for the weekend
back again :)
couple of points
a) looks like I neglected to notice that D3 is used for the RPM interrupt
- so we have to re-route the board :(
b) as others have...
Stick with transformer, 10 volts will be fine
Be careful!
two answers
a) cos that's what the circuit from the OP did!
b) because the lower voltage means the following circuitry only sees a much lower voltage (~17 volts max)
now, I would ask "why 12...
there are no dumb questions!
it would be DC if it had more circuitry
the full wave bridge rectifier (4 diodes) and the following components simply give one pulse per half cycle
Tim
first off you can't use 12 volts DC, that defeats the whole purpose of the entire project!
the zero crossing part works by raising an interrupt every time the AC crosses zero (hence the...
ok
here's my contribution
zip with EAGLE files for a stand alone controller
do run the ratsnest command to lay down the ground plane before you etch
this board:
a) untested
b) on-board PTH...
I will use the "new" pins on a standalone board. Tell me more about laser etching. I'll put up the full eagle files later
Cheers
Mike
here's my attempt on a stand-alone
pins re-assigned
a) to make routing easier
b) to free up SPI
c) to free up FTDI
enjoy
Now
if I was building this from scratch, especially if I was brewing my own 'duino, I'd change some of the pin assignments
currently there's no (easy) way to upload software to the chip
so
I'd...
Eagle uses layers, if you show the tName layer you will see the names, tValues shows the values
here's the zip of the EAGLE files with LCD added
rather than including the LCD itself on the shield I have shown a 16-pin header
do check the A and K connections, the original (from OP github)...
EAGLE files on the previous page
I'll upload the LCD circuits in the morning
it's sleepy o'clock now
gnite
Mike
I've updated the circuitry:
a) to include the LCD
b) to add a DIAC
any interest?
take a look at the link posted by orkki on the previous page
Using Hardware Interrupts to Control A.C. Power with Arduino
there needs to be a 12 volt transformer in there
lower mains voltage isn't a problem as such
just that you will need higher current for the same power
so just check the current rating of the triac
BT139 is rated 2 amps = 200 watts at 110 volts
...
hello Khalid
i'm 220 volts also
bt139 is rated 800 volts
should be enough??
adding the parts for a stand-alone shouldn't be too hard
I look forward to seeing your circuit!
PS
I'm looking at the LCD boards next
I think there is a mistake in the boards on github
the A and K pins are flipped
be very careful out there!
I got the circuit into EAGLE and laid out the PCB
it's single sided
there is a "hole" in the Arduino box as we don't actually want an Arduino on the shield!
I did place it to align the headers,...
thanks orkki
that fills in a few gaps very nicely
timmy
I still don't see where you get the second triac - which one is it in the circuit?
cheers
Mike
I have the code open in one hand and schematic in the other
helps to know what the code is trying to do with the hardware and vice versa!
I think we can swap hall effect and IR quite easily as...
I got the schematic from the githup zip files, same one as you posted the picture for
still working on the triacs - not sure why there's two!
one ought to be enough
I am expecting to use an IR...
I just found the same circuit!
just converting it to EAGLE so we can do something useful with it
which circuit diagram are you going with?
Hello Tim
not sure how much I can contribute, but happy to ride along
I have quite a bit of 'duino experience, but not mush with the PID algorithm
I get the theory, but have yet to build a working...
thanks
it was the schematic I was more interested in :)
ah
the only circuit I can find is Arduino shield pdf in Old design
is that the latest circuit?
thanks
Mike
PS good work by the way!