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1  Development / Other Hardware Development / Re: Shield Reset Switch on: February 15, 2013, 01:46:26 pm
Hi,

That simple eh?
Could have made it more difficult and esoteric, now I feel a dork for asking.

Many thanks and kind regards,

jb  smiley-cool
2  Development / Other Hardware Development / Shield Reset Switch on: February 15, 2013, 11:00:12 am
Hi,
I am in the process of making my own shield and want to put a reset switch on it (as per most shields) to save me fumbling around for the MCU reset switch.
Could someone please give me a steer as to what I need to do? i.e what I need to hook up to?
Thanks as always,
jB smiley-cool
3  Using Arduino / Sensors / Re: Pull Down Resistor on: October 03, 2012, 10:34:42 am
Thank you kind Sir.

regards,

jB  smiley-cool
4  Using Arduino / Sensors / Pull Down Resistor on: October 03, 2012, 06:53:17 am
Hi,

Can anyone please tell me how to convert this image to a pull down resistor version so that it goes high when triggered rather than low?

http://static.flickr.com/30/65458903_d9a89442a9_b.jpg

http://http://arduino.cc/en/Tutorial/TiltSensor

Thanks and kind regards,

jB  smiley-cool
5  Using Arduino / Networking, Protocols, and Devices / Maximum Serial Communications Distance (Length) on: September 05, 2012, 12:28:31 pm
Hi,

Is there a maximum distance that 2 Arduinos can communicate with each other using serial? 1 of the UNO's will already be an I2C slave to another I2C master so cannot use I2C.

I want to use a UNO to manage display of various types of data collected locally by the other.
I am limited as to the wires I have running from the data collector to the data displayer and thought I could use UNO's to overcome the problem. I cannot dig up the land and lay more cables but I need more sensor data displayed.

Thanks and kind regards,

jB  smiley-cool
6  Using Arduino / Installation & Troubleshooting / [SOLVED] Can't Upload with Arduino IDE after install of Atmel Studio 6 on: September 05, 2012, 08:08:19 am
It would appear that the SIM900 shield I had attached was switched over to UART mode.
When I disconnected all the shields and started from the UNO, all uploaded.
I kept adding shields and uploading until I added the SIM900 shield, then it croaked.
Luckily my first kludge was to flick the UART switch and try again. Voila 1 UNO uploading very happily.

Moral of the story RTFM

Thanks and kind regards,

jB  smiley-cool
7  Using Arduino / Installation & Troubleshooting / Re: Can't Upload with Arduino IDE after install of Atmel Studio 6 on: September 04, 2012, 08:16:46 am
Further to my last, I just attached an Arduino MEGA on COM 9 and it is compiled and uploaded.

So somehow it has to be the driver that is affecting the UNO but for the life of me I cannot at the moment work this out.

I will have a look on google to see if I can find a tool to remove all drivers associated with a port / device then try again as a new device.

If you have any ideas feel free to jump in.

Regards,

jB  smiley-cool
8  Using Arduino / Installation & Troubleshooting / Re: Can't Upload with Arduino IDE after install of Atmel Studio 6 on: September 04, 2012, 08:07:44 am
Hi again CrossRoads,
Thanks for taking the time to reply.

Unfortunately that does not seem to work.
I even assigned the Arduino UNO a new com port to see if that would help.

Seems at the moment whatever I do I get the same stk500 failure comments whenever I try and upload.

Just as a matter of interest, I set the board to UNO and the Serial Port to 15 my newly chosen one.
Under programmer I have the following menu options:

AVR ISP
AVRISP MkII
USBtinyISP
USBasp
Parallel Programmer
Arduino as ISP

As I have never really paid any attention to these, are they correct, do I need to be concerned about them (one)?
Maybe if I uninstall Arduini IDE and reinstall would that help, do you think?

Appreciate the help as always, kind regards,

jB  smiley-cool
9  Using Arduino / Installation & Troubleshooting / [Solved] Can't Upload with Arduino IDE after install of Atmel Studio 6 on: September 03, 2012, 01:40:46 pm
Hi,

I have just installed Atmel Studio 6 with and STK500 & AVRISPmkII attached.
All seemed fine with AS6.
I now find I can still compile using Arduino IDE but when I try and upload it fails with the following messages.

1. With Shift Key & Upload
Code:
Binary sketch size: 2,900 bytes (of a 32,256 byte maximum)
avrdude: stk500_getsync(): not in sync: resp=0x00
2 Without Shift Key just Upload
Code:

Binary sketch size: 2,900 bytes (of a 32,256 byte maximum)

avrdude: stk500_getparm(): (a) protocol error, expect=0x14, resp=0x86

avrdude: stk500_getparm(): (a) protocol error, expect=0x14, resp=0x18
avrdude: stk500_initialize(): (a) protocol error, expect=0x14, resp=0x18
avrdude: initialization failed, rc=-1
         Double check connections and try again, or use -F to override
         this check.

avrdude: stk500_disable(): protocol error, expect=0x14, resp=0x00

Can anyone please advise me what I can do to get both IDE's working?

Thanks and kind regards as always,

jB  smiley-cool
10  Using Arduino / Project Guidance / Stacking Boards that cannot stack ??? on: August 08, 2012, 12:51:09 pm
Hi,

I have an Arduino Mega that needs to have an Ethernet shield and an expansion shield.
As I have to mount the Ethernet shield first so it can use the ICSP pins, I then cannot stack the expansion board correctly as the Ethernet shield is only UNO sized although sold as and works as Mega compatible.
If I then put the expansion shield on top of the Ethernet shield, I only get the UNO equivalent of pins.
Question:
Can I add headers to the MEGA, at the bottom of the stack, so that the expansion board will marry up to the Mega? Although I think 1 or 2 pins will be blocked out by the Ethernet boards edges.
At the moment I seem to need to utilise 3 or 4 sets of headers to get the correct height. Is this the correct way to go about connecting it all together or is there an easier way?

Appreciate any advice.
Kind regards,

jB  smiley-cool   
11  Using Arduino / Project Guidance / Engine Radiator Coolant Level & Temperature on: August 07, 2012, 01:03:14 pm
Hi,

I would like to make a sensor that detects the following:
1.   The level of the coolant in a diesel engine radiator.
2.   The temperature of the coolant.
3.   If the cap is screwed on correctly. (i.e it's on)

Has anyone any advice please.
The coolant is usually an off the shelf bottle mix of anti-freeze at 30% that gets watered down during the summer and refilled towards winter. I do not know how toxic or caustic it is, as to whether it will eat probes etc?

Thanks, appreciate the help.

Kind regards,

jB  smiley-cool
12  Using Arduino / Programming Questions / Re: Piezo Buzzer ( 2 - 6 MegaHertz) Pulsed Output on: August 03, 2012, 10:18:31 am
Hi,

I was hoping that I could affix the PB to the side of the battery towards the bottom and induce a resonnance into the battery.
I do not think that either me or the battery system is up to being done via elec-trickery at this stage, it would probably interfere with Inverter / Charger system, so sound was my first thought.

I had looked at http://www.reuk.co.uk/Battery-Desulfation.htm which I may venture towards in later life.

Any other help gratefully received.
Thanks and kind regards,

jB  smiley-cool
13  Using Arduino / Programming Questions / Piezo Buzzer ( 2 - 6 MegaHertz) Pulsed Output on: August 03, 2012, 08:25:29 am
Hi,

I need to produce a Pulsed 2 -6 MegaHertz output to set up plate resonanace in Lead Acid Batteries.
For example I would have 60 seconds at 2 MHz then 60 seconds at 3 MHz then 60 seconds at 4 Mhz etc.
then repeat again. Also a random Mhz 2-6  so 4 ,2 6, 5 etc. all for 60 seconds.
Probaly with PWM

Can I use a piezo buzzer for this?
And any ideas on the basic code to generate a Mhz value please?

Thanks

jB  smiley-cool
14  Using Arduino / Programming Questions / Re: #Defines - Builtin ? on: August 01, 2012, 05:50:33 am
Thanks, much appreciated.
Kind regards,

jB  smiley-cool
15  Using Arduino / Programming Questions / #Defines - Builtin ? on: August 01, 2012, 05:27:45 am
Hi,
As I hate re-inventing the wheel, is there a list of builtin defines / macros for the Arduino MCU?
I know from reading that there is __DATE__ & __TIME__ but do defines for ARDUINO_UNO_R3 and ARDUINO_MEGA_2560_R3 (for example), exist, as this would make life much easier for making headers etc.
Has anyone compiled a list somewhere?

Appreciate the help as always, kind regards,

jB  smiley-cool
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