Search found 17 matches

by mndless
Sat Jun 16, 2012 4:29 pm
Forum: Sensors
Topic: Wind sensor formula for mph
Replies: 10
Views: 17177

Re: Wind sensor formula for mph

I am sure there is data curve out there for the specific sensor... I'm sure there is calibration required per unit... , you can derive your own pretty easy.. depending on your needed level of accuracy. Solicit help from a friend, have them hold the working sensor out your car window. Record sensor r...
by mndless
Wed Jun 13, 2012 4:43 pm
Forum: Sensors
Topic: Using the temp sensor with JeeNode?
Replies: 13
Views: 16718

Re: Using the temp sensor with JeeNode?

Thanks Paul.... got a couple on the way, I'll play with it a couple of ways and post a pic, if it turns out ok :)
by mndless
Mon Jun 11, 2012 8:35 pm
Forum: Sensors
Topic: Using the temp sensor with JeeNode?
Replies: 13
Views: 16718

Re: Using the temp sensor with JeeNode?

Any updates on this?? I'm ready to order a temp sensor for a JN? Unless there is another one you'd recommend... just need temp...
by mndless
Fri Jul 15, 2011 11:02 am
Forum: RBBB
Topic: RBBB issue with I2C
Replies: 27
Views: 35567

Re: RBBB issue with I2C

Yep... my old multi meter wast recording a value, so I ordered a new one... got it last night, and sure enough... it does register a value, it was bouncing around beetween KH and MH.. .big numbers, but resistance was there... I think I know what happend.... classic newb mistake. I didn't go buy any ...
by mndless
Fri Jul 15, 2011 9:21 am
Forum: RBBB
Topic: RBBB issue with I2C
Replies: 27
Views: 35567

Re: RBBB issue with I2C

So.... I take it that regestering a resistance value is a bad thing.... ;)
by mndless
Tue Jul 12, 2011 6:57 pm
Forum: RBBB
Topic: RBBB issue with I2C
Replies: 27
Views: 35567

Re: RBBB issue with I2C

Minor destructive investigation in progress now... ;) Took higher resolution and cropped inward some... http://i585.photobucket.com/albums/ss300/mndless/1-3.jpg http://i585.photobucket.com/albums/ss300/mndless/11.jpg larger view http://i585.photobucket.com/albums/ss300/mndless/3-2.jpg The pins are c...
by mndless
Tue Jul 12, 2011 5:07 pm
Forum: RBBB
Topic: RBBB issue with I2C
Replies: 27
Views: 35567

Re: RBBB issue with I2C

Here are a few links to pictures... camera will only focus, close in, to a limit.... http://i585.photobucket.com/albums/ss300/mndless/rbbb003.jpg http://i585.photobucket.com/albums/ss300/mndless/rbbb002.jpg Used my reading glasses to enlarge this one... actually worked... http://i585.photobucket.com...
by mndless
Tue Jul 12, 2011 11:18 am
Forum: RBBB
Topic: RBBB issue with I2C
Replies: 27
Views: 35567

Re: RBBB issue with I2C

Using a multimeter, check the resistance value between: 1. A5 pin and the GND pin right next to it 2. GND and 5V right next to the A5 pin 3. A5 and the 5V one pin over. Be sure to check with those specific pins and not some other place in the board that is labeled 5V or GND. Will do... had to order...
by mndless
Tue Jul 12, 2011 8:27 am
Forum: RBBB
Topic: RBBB issue with I2C
Replies: 27
Views: 35567

Re: RBBB issue with I2C

What is the value of C2 on your boards? C1 and C2 are both 47 uF... C2 is neg to the rear, C1 is neg to the front, same on all I would guess that either something is backwards like the VR or you substituted parts like the VR and picked one with a different pin out. The Voltage Regs's are installed ...
by mndless
Mon Jul 11, 2011 8:52 pm
Forum: RBBB
Topic: RBBB issue with I2C
Replies: 27
Views: 35567

Re: RBBB issue with I2C

floresta wrote:I'd say it was spurious oscillations from the voltage regulator.

Don

you were making a funny weren't you... and I didn't get it... :)
by mndless
Mon Jul 11, 2011 8:07 pm
Forum: RBBB
Topic: RBBB issue with I2C
Replies: 27
Views: 35567

Re: RBBB issue with I2C

floresta wrote:I'd say it was spurious oscillations from the voltage regulator.

Don
2 different voltage regulators...

of the 5 culprits... 3 with the TO-92 and 2 with the To-220....

So... not sure that is it...
by mndless
Mon Jul 11, 2011 6:51 pm
Forum: RBBB
Topic: RBBB issue with I2C
Replies: 27
Views: 35567

Re: RBBB issue with I2C

Think I have found something obvious and different... care to guess at the cooporating board? I pulled the chip out of all 6 and plugged in a 9V battery... using my multi-meter, I put the pos lead into the center ground plug in the IC dip socket. Then, with the neg. lead, I started checking voltages...
by mndless
Sun Jul 10, 2011 5:08 pm
Forum: RBBB
Topic: RBBB issue with I2C
Replies: 27
Views: 35567

Re: RBBB issue with I2C

Update, after a short recap... Have six RBBB's all purchased around the same time... 5 of the 6 experienced an issue with I2C... see video above. Pulled the chips out of each of the boards and verified that each chip does work in the single cooperating board... As noted above, I have reheated each p...
by mndless
Tue Jul 05, 2011 7:59 am
Forum: RBBB
Topic: RBBB issue with I2C
Replies: 27
Views: 35567

Re: RBBB issue with I2C

Will do Paul... Thanks again...

Will report back

Tony
by mndless
Mon Jul 04, 2011 7:26 pm
Forum: RBBB
Topic: RBBB issue with I2C
Replies: 27
Views: 35567

Re: RBBB issue with I2C

Thanks Paul... obviously, I am new to all of this and it has been a great learning experience... rather adictive, actually... who would have thought a middle aged structural engineer could get emerced in microcontrollers? :) Putting the bus together, I followed a great tutuorial posted by Nick Gammo...
by mndless
Mon Jul 04, 2011 3:52 pm
Forum: RBBB
Topic: RBBB issue with I2C
Replies: 27
Views: 35567

Re: RBBB issue with I2C

As requested, I placed each chip in the known working board... in that board, they all work... of course. I then went back through each of the boards with a known working chip.... in each case, nothing.. so, it certainly does appear to be the same issue with all 5 boards. I have examined each board ...
by mndless
Sun Jul 03, 2011 4:13 pm
Forum: RBBB
Topic: RBBB issue with I2C
Replies: 27
Views: 35567

RBBB issue with I2C

Recently purchased a batch of RBBB... have six (6) of them. I have a simple test setup for running an I2C bus with the wire library. Simple stuff, telling the slaves to blink. The master and slave code have been tested and work with various boards I have tried. I have placed the slave code on each o...