Arduino Based Weather Station

[Gina]

2 minutes ago, tekkydave said:

Reinstall Arduino IDE? Clutching at straws now I'm afraid.

What! On all three computers??

Edited December 16, 2017 by Gina

[Gina]

Tried an Arduino Uno and still the same - and yes, I did change Board to UNO. 

[Gina]

All three computers have been used to upload sketches to Arduinos, Nano, Mega and Uno.  The Dell Satellite laptop running Linux Mint is what I use to update Marlin in my 3D printers.  Moon dial clock Nano has been updated quite recently without any problem from my Linux Mint desktop.  I usually know what I'm doing!  OK I can go on making more prints but I would really like to check out the direction sensor chip for my wind vane.

[tekkydave]

9 minutes ago, Gina said:

What! On all three computers??

I did say I was clutching at Straws

I doesn't make sense as you have swapped around all the main components; arduino, cable and PC/laptop (including IDE). Must be something else but IBIIK what.

Edited December 16, 2017 by tekkydave

[Gina]

Yes, I know!  I seem to be jinxed.   Maybe it'll work another day!  Blooming gremlins - I'm fed up with them!!

Edited December 16, 2017 by Gina

[tekkydave]

I can reproduce this problem but only by selecting the wrong board type (Uno instead of Nano).

I'm using IDE version 1.83 on Linux.

[Gina]

Looks like v1.0.5 on Linux.  Think I try upgrading.

[Gina]

Definitely the right board type "Arduino Nano w/ ATmega 328".

[Gina]

Downloaded latest version of Arduino IDE - v1.8.5 and ran the install.sh script.  Been re-arranging the directories and after much experimentation the sketch compiles.  Still the same problem uploading though   Previous version was 1.6.4.

[Gina]

I'm clearly wasting my time...

[Gina]

BTW - the Win 7 laptop showed the com port fine from Device Manager and showed the correct chip so the Nano was connecting properly.

[angryowl]

I would try doing a loopback test as the next troubleshooting step.

https://forum.arduino.cc/index.php?topic=73748.0

[JamesF]

Perhaps this might help?  https://stackoverflow.com/questions/19765037/arduino-sketch-upload-issue-avrdude-stk500-recv-programmer-is-not-respondi

The third answer looks to have a lot of information that might set you right.

And there are some other ideas here:  https://arduino.stackexchange.com/questions/17/avrdude-stk500-getsync-not-in-sync-resp-0x00-aka-some-dude-named-avr-won

James

[Gina]

Think I've tried all of those James

[Gina]

54 minutes ago, angryowl said:

I would try doing a loopback test as the next troubleshooting step.

https://forum.arduino.cc/index.php?topic=73748.0

Tried that with an old Nano and got no text back but this board may be duff anyway.  I could add pins to one of the new Nanos and try that.  (Or solder links on.)  I don't want pins on the board I'm using for the wind sensors - just the plain Nano board with wires connected to the solder pads.  Gnd, +5v, 3 wires to the direction chip and 1 to the anemometer (plus Gnd & +5v).

Edited December 16, 2017 by Gina

[Gina]

Been looking at the Arduino Nano connections but I'm having a bit of a problem with the MLX90316.  These diagrams don't seem to correspond.

[Gina]

The anemometer Hall sensor will connect to D2, one of the interrupt pins and I'm planning to use interrupts to count the turns of the anemometer (using the falling edge of the waveform).  Highest interrupt is calculated with a 100mph wind (which I hope we will never get!) with a 100Hz frequency ie. 10ms between interrupts which I reckon the Arduino should be well able to cope with.  Earlier version of the weather station used a 1-wire counter chip but a direct connection to the Nano is simpler and the 1-wire counter chip was discontinued several years ago.

[angryowl]

In SPI mode you don't need the MISO connection through the FET and R2 as shown in this diagram from the datasheet. Only MOSI is needed as a direct connection to a digital pin and of course the SCK and SS to have their own separate digital pins on the Arduino. So you can wire it as illustrated in the below diagram with the exception of the MISO connection and associated external components. HTH

[Gina]

Do you have the MOSI & MISO mixed up?  MOSI goes through the FET in the diagram.  I'm confused still

Edited December 16, 2017 by Gina

[angryowl]

Alternatively, if you can't read the sensor after having wired it as in the above diagram you could give this a go. This uses both MOSI and MISO and replaces the FET with a transistor but requires a bit more coding to get it running. I can't guarantee this works as I haven't tried it but if you've no luck using the first diagram it might be worth a shot.

[angryowl]

5 minutes ago, Gina said:

Do you have the MOSI & MISO mixed up?  MOSI goes through the FET in the diagram.  I'm confused still

Yes, my apologies, meant only MISO need be used and leave MOSI out.

[Gina]

If your setup works with just MISO connected mine should too

[Gina]

I linked RST to GND and TX to RX on a new Nano but the loopback didn't work.

Edited December 16, 2017 by Gina

[angryowl]

1 minute ago, Gina said:

If your setup works with just MISO connected mine should too

Yes it should, provided you have the SPI version 

[Gina]

Just now, angryowl said:

Yes it should, provided you have the SPI version 

I do