In response to: Mobile Sun Tracking Solar Power Plant

jherrmann [Member]
This a well thought out project. Thank you.

Please send me a copy of your CAD file. I'm thinking of creating one.

Thank you,
John
PermalinkPermalink 11/30/17 @ 09:03

In response to: Welcome To My Arduino Blog

goosey [Member]
Doesn't anyone use the peak output voltage/current of the solar panels as the position sensor? The whole point of re-positioning is to get the maximum voltage and current.
PermalinkPermalink 11/25/17 @ 21:30

In response to: Mobile Sun Tracking Solar Power Plant

knutarn [Member]
Hi :) Does it have to be placed west before I turn it on? or?
PermalinkPermalink 07/11/17 @ 14:42

In response to: Mobile Sun Tracking Solar Power Plant

holger [Member]
Thanks a lot!!!

Best regards
Holger
PermalinkPermalink 07/11/17 @ 13:11

In response to: Mobile Sun Tracking Solar Power Plant

kschulz [Member]
@Holger - the Adafruit motor shield is spec'ed as using TB6612 MOSFET drivers with 1.2A per channel current capability (you can draw up to 3A peak for approx 20ms at a time). The linear actuator I used is spec'ed at 800mA current drain with no load, and 3.8A at max load. Looking at the speed vs load chart on the Servo City website, loads range from 0 to 315 lbs. Weighing only 11 lbs, the solar panel represents a very light load, and the actuator operates at a very low duty cycle. You shouldn't have any problems using the Adafruit motor shield for this. The heavy duty actuator is way overkill, but that's what I had on hand. If you prefer, you can use a lighter duty actuator that draws less current since the solar panel is such a light load. Good luck with your project!
PermalinkPermalink 07/09/17 @ 08:58

In response to: Mobile Sun Tracking Solar Power Plant

holger [Member]
HI,

I am really happy that I found this great project. But when I wanted to start order needed stuff I recognized that the linear actor seems to consumpt more current than adafruit shield is designed for. How did you solved this problem?

Best regards
Holger
PermalinkPermalink 07/09/17 @ 08:04

In response to: Mobile Sun Tracking Solar Power Plant

kschulz [Member]
@Will - how are you providing power for the linear actuator motor? Do you have the jumper in place on the Motorshield to supply VIN power from the DC jack to the motor?

From the Motorshield FAQ on the Adafruit website:

HELP! My motor doesnt work! - HELP! My motor doesnt work!...But the servos work FINE!
Is the power LED lit? The Stepper and DC motor connections will not work if the onboard green Power LED is not lit brightly!
You must connect 5-12VDC power to the shield through the POWER terminal blocks or through the DC barrel jack on the Arduino and VIN jumper.

What is the green Power LED for?
The LED indicates the DC/Stepper motor power supply is working. If it is not lit brightly, then the DC/Stepper motors will not run. The servo ports are 5V powered and does not use the DC motor supply.

See it here:
Adafruit Motorshield FAQ
PermalinkPermalink 05/01/17 @ 00:37

In response to: Mobile Sun Tracking Solar Power Plant

will.schools [Member]
Hello Kurt,

I followed your advice and made sure to connect the white(pot ref) and blue(pot wiper) wire directly to A3 of the motor shield, with a 10k resistor connected in parallel but still no response from the actuator. This is the actuator we are using.
https://www.servocity.com/hda2-2

Could it be that our actuator requires more current than the shield can supply?

I also noticed that the M4 terminal on the shield only supplies a few milli volts which is not enough to drive the 12V actuator.

If possible could I contact you privately and send you pictures of my connection?

Thanks
PermalinkPermalink 04/29/17 @ 18:22

In response to: Mobile Sun Tracking Solar Power Plant

will.schools [Member]
Thank you for your quick response Kurt!

I actually wired the white/blue wires from the actuator in series with the 10k resistor. I will try wiring the 10k resistor in parallel and report my results again.
PermalinkPermalink 04/23/17 @ 22:09

In response to: Mobile Sun Tracking Solar Power Plant

kschulz [Member]
Hi Will - originally there were two errors in the schematic for the linear actuator, but the schematic shown here was updated awhile ago. Check the red and black wires coming from the actuator motor to make sure they're connected to both M4 terminals of the motor shield (the black wire must NOT be connected to ground). Also, the white/blue wires from the actuator pot should be connected directly to A3, with a 10K resistor in parallel to ground to form a voltage divider (the old schematic showed the 10K resistor in series which is not correct).
PermalinkPermalink 04/23/17 @ 18:08

In response to: Mobile Sun Tracking Solar Power Plant

will.schools [Member]
Hi Kurt,

I really liked the complexity and functionality of your project thanks for sharing your hard work with the world! I was having a small issue with controlling the linear actuator. I followed your instructions and tripled checked off your schematic with my connection but I cant seem to figure out why the servo responds but actuator doesn't. I've been troubleshooting for 3 weeks without any progress. I appreciate any help but none the less this is still a fantastic project!
PermalinkPermalink 04/23/17 @ 04:29

In response to: Mobile Sun Tracking Solar Power Plant

abokhadejah [Member]
Can you give me your email to correspond with you ؟؟
PermalinkPermalink 01/06/17 @ 07:27

In response to: Scooterputer

kschulz [Member]
@sformal Thanks for the suggestion. The schematic can be downloaded from our web site on the Downloads page. The RPM sensor section is identified on the schematic.
PermalinkPermalink 05/03/16 @ 21:37

In response to: Scooterputer

sformal [Member]
Techfirma should make a simplified version with only the RPM and voltage sensors.

All other stuff are included in an Android phone if there is no need for tracking...

Do you have the diagram of just the RPM sensor?

Regards
PermalinkPermalink 05/03/16 @ 00:50

In response to: Scooterputer

lalitntaparia [Member] · http://phoneholder.co
Too Good. Use of a car mount is awesome here. There are many car mounts like phone holder for car vent, Steering phone holder and windshiekd phone holder are available. Which one to use here.
PermalinkPermalink 04/25/16 @ 08:21

In response to: Mobile Sun Tracking Solar Power Plant

samo111 [Member]
kschultz

I have put you code on Arduino 1.6.7 and when i start with cheking code, i recive masage :
- compilation terminated.
- exit status 1
- mistake in translation

What could bi wrong, because i cheked code and see it is same as you have put on net.
PermalinkPermalink 01/25/16 @ 11:38

In response to: Scooterputer

smilem [Member]
Best arduino article with pictures and all.
I'm looking for battery voltage, capacity monitor.

Author has contact webform disabled.
Perhaps he can do tutorial on this?

There are 2 ways to solve this:

1.With constant load like this:
youtube.com/watch?v=EdJCykaOdt8

2.With shunt like this:
arduinotronics.blogspot.lt/search?q=shunt

A nice article would really be appreciated guys !
PermalinkPermalink 12/06/15 @ 11:33

In response to: Mobile Sun Tracking Solar Power Plant

dmsolar [Member]
Ok thanks!
PermalinkPermalink 07/25/15 @ 23:13

In response to: Mobile Sun Tracking Solar Power Plant

kschulz [Member]
Yes, make sure the actuator position pot is wired according to the schematic as it's now shown. The pot and 10K resistor form a voltage divider read by analog input A3. The Arduino is powered by the battery. It is OK to wire to the Arduino ground.
PermalinkPermalink 07/25/15 @ 21:03

In response to: Mobile Sun Tracking Solar Power Plant

dmsolar [Member]
my next question is you show the ground reference to battery ground, is it the ground from the Arduino card? if not where? i'm currently using the card ground near the 5 vdc
PermalinkPermalink 07/25/15 @ 20:26