It looks and sounds like you're suggesting putting an extra voltage source (like the batteries or a DC power adapter) in parallel a with the power output of the Arduino. That would be a bad arrangement that'll likely shorten the life of your Arduino board and the batteries. You said it provides 8 volts, which would be true if you connected the power supplies in series. But that might not solve your problem and it's still possibly going to overtax the voltage regulator on the Uno board. Most hobby servos are designed to work at approximately 6V. Many list specs for running them at 4.8V and 6V. If you don't have enough power, then you probably aren't able to source enough current and/or the servo is too small for the job. A typical hobby servo might draw something on the order of 100 mA on average, but it can peak above 1 A when driven under load. The +5V output pin on the Arduino can provide a limited amount of current. Details vary by board, and some clones use different power management designs that are fine for general use but don't meet the specs of the official boards. You can probably power a single, lightly loaded servo from the Arduino's +5V output. (Even if you can, there can still be reasons to consider using a more capable power supply.) If you want to drive a larger servo, a servo that's most produce a lot of torque, or more than one servo (at a time), you're going to need more current. A better solution would be to power the servo directly from your 6V power adapter. Connect the power and ground wires from the servo directly to the positive and negative outputs of the power adapter. Connect the signal wire to the GPIO pin on the Arduino. If you power the Arduino from a separate supply (like the USB or a second power adapter), then you **must** connect the 6V ground (negative) to the Arduino's ground. The servo is going to compare the signal voltage to the ground from its power supply, so you need both grounds to be at the same potential. If you want to power the Arduino from the same 6V supply, you'll need a tee that gives your power supply two outputs in parallel. In that case, keep in mind that the total current rating of the supply must exceed the current needed by the servo plus the current needed by the Arduino. (Powering an Uno from a 6V supply will usually work, though it's recommended to use at least 7 volts.)
Appreciate the info. I don’t know about any of that and just do what makes it work the way I need it to. But, I definitely don’t want to ruin a board. I’ll take your information gladly. Just thought using the breadboard would help, because the 5v wasn’t allowing the movement with weight but the 7 something I had connected to breadboard did. I’m proficient in replacing light bulbs, at the least! Thanks for the info. Appreciate it.
It looks and sounds like you're suggesting putting an extra voltage source (like the batteries or a DC power adapter) in parallel a with the power output of the Arduino. That would be a bad arrangement that'll likely shorten the life of your Arduino board and the batteries.
You said it provides 8 volts, which would be true if you connected the power supplies in series. But that might not solve your problem and it's still possibly going to overtax the voltage regulator on the Uno board.
Most hobby servos are designed to work at approximately 6V. Many list specs for running them at 4.8V and 6V. If you don't have enough power, then you probably aren't able to source enough current and/or the servo is too small for the job. A typical hobby servo might draw something on the order of 100 mA on average, but it can peak above 1 A when driven under load.
The +5V output pin on the Arduino can provide a limited amount of current. Details vary by board, and some clones use different power management designs that are fine for general use but don't meet the specs of the official boards. You can probably power a single, lightly loaded servo from the Arduino's +5V output. (Even if you can, there can still be reasons to consider using a more capable power supply.) If you want to drive a larger servo, a servo that's most produce a lot of torque, or more than one servo (at a time), you're going to need more current.
A better solution would be to power the servo directly from your 6V power adapter. Connect the power and ground wires from the servo directly to the positive and negative outputs of the power adapter. Connect the signal wire to the GPIO pin on the Arduino.
If you power the Arduino from a separate supply (like the USB or a second power adapter), then you **must** connect the 6V ground (negative) to the Arduino's ground. The servo is going to compare the signal voltage to the ground from its power supply, so you need both grounds to be at the same potential.
If you want to power the Arduino from the same 6V supply, you'll need a tee that gives your power supply two outputs in parallel. In that case, keep in mind that the total current rating of the supply must exceed the current needed by the servo plus the current needed by the Arduino. (Powering an Uno from a 6V supply will usually work, though it's recommended to use at least 7 volts.)
Appreciate the info. I don’t know about any of that and just do what makes it work the way I need it to. But, I definitely don’t want to ruin a board. I’ll take your information gladly. Just thought using the breadboard would help, because the 5v wasn’t allowing the movement with weight but the 7 something I had connected to breadboard did. I’m proficient in replacing light bulbs, at the least! Thanks for the info. Appreciate it.
Looks awesome just a question though. How do you get the mouth to move in time with a speech recording?
Using the Jawduino build. The audio goes straight to the arduino. I have the build here:
ruclips.net/video/0rVZTHBohRo/видео.htmlsi=bMbgJ83FoRvIrLqb
Here’s a better sample using the Jawduino build.
ruclips.net/video/rxGQFC-vLQo/видео.htmlsi=fnFaj31OKxfDxbiG
Nice video. We have a lot in common :-)
I see that!