Timeline for Arduino Uno + Ardumoto + BT robot works from USB but not from baterries
Current License: CC BY-SA 3.0
14 events
| when toggle format | what | by | license | comment | |
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| Apr 4, 2017 at 1:53 | comment | added | moestly | Measure the voltage of your batteries when the led's blink (motor should turn). If you see a significant voltage drop then your batteries are not providing enough current. You can also test this with a dummy load (resistor s should do). | |
| May 3, 2014 at 13:04 | comment | added | grokkaine | tx I tried to answer your questions (see the update). | |
| May 3, 2014 at 13:02 | history | edited | grokkaine | CC BY-SA 3.0 |
edited title
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| May 3, 2014 at 12:55 | history | edited | grokkaine | CC BY-SA 3.0 |
added details of the behavior under fully charged batteries, and details for batteries, motor shield, robot and code
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| May 3, 2014 at 12:45 | history | edited | grokkaine | CC BY-SA 3.0 |
added details of the behavior under fully charged baterries
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| May 2, 2014 at 14:04 | answer | added | JRobert | timeline score: 1 | |
| May 2, 2014 at 2:17 | comment | added | jfpoilpret | Do you have more data about your batteries, and are they fully charged? The current that batteries can provide is super important due to the motors that are part of your circuit. | |
| May 2, 2014 at 0:43 | comment | added | evan.stoddard | Stupid question but you sure the polarity is correct? The power led should at least light up... Also, are you using the VIN pin are the power jack... goes to the same place... | |
| May 2, 2014 at 0:28 | history | edited | grokkaine | CC BY-SA 3.0 |
edited title
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| May 2, 2014 at 0:21 | comment | added | grokkaine | on usb everything works, on bateries dead silence not even a led. to test the basic blink I guess I must replace the current program. I was hoping that I can diagnose the power somehow be fore it bridges with the USB source since that works. Batteries and plug are fine, I only measured the voltage, 7.8 should be ideal right? | |
| May 1, 2014 at 20:37 | comment | added | Anonymous Penguin | Does the basic "blink" example work? If not, then it's hardware. Otherwise, software. A few other things: is battery providing enough current and charged fully? Check both of these with a multimeter. Are you positive that all connections are correct (VIN and ground) and there are no loose connections? | |
| May 1, 2014 at 15:31 | comment | added | imjosh | what happens when you plug in the battery plug? any LEDS on the arduino light up? | |
| May 1, 2014 at 14:02 | comment | added | TheDoctor |
Do you have anything in your code that says while (!Serial); inside setup()?
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| May 1, 2014 at 13:24 | history | asked | grokkaine | CC BY-SA 3.0 |