How to Make Record and Play Servo Based Robotic Arm
Getting Started With the LM317 Voltage Regulator
Thanks. That's what I'll do. Can you, by chance, point me to a place that explains when a zener circuit, a voltage divider and a linear regulator are the appropriate choices. If not, that's fine. Just thought I'd ask.
Hello again, I decided to bag the divider idea after digging a little more. At this point I'm leaning towards the zener. Do you have a suggestion for a transistor? As far as safety is concerned, I am planning on mounting only the motor in a medicine bottle with a bit of rubber and zip ties. All my other electronics are away from cat parts. Most of the cat has been cut away to allow for space so the box can close easily. Thanks again!
Nice tutorial. Is this regulator suitable for a hobby motor? Or are there better options? Need to get from 6V to 3.3, and then maybe PWM a little lower.
Disregard please. I did a little more digging, and now I see why a divider isn't ideal. But what method would you use? And also, what type of transistors are you referring to with pulsing PWM, and as a driver with a Zener? Thanks in advance!
Hi! I'm sorry, but I didn't even see your comment. I appreciate you taking the time to answer. I know it's a simple circuit, but I've watched videos and read articles, and they all are at least slightly different. Anyway, I was wondering why I can't use two equal value resistors in series from the positive lead from my 6v PSU, and tie in between the resistors to get the 3V? At least that's what I get on the breadboard. I was going to tie that lead to my motor, diode, cap and MOSFET Drain. Am I way off? I wouldn't doubt it - lol! Thanks again!
Hi Randofo! I took a robot course that you taught, which included your Telepresence Robot. You were an amazing teacher, and there have been many times I wanted to ask you a question b/c you don't talk down to people. So thanks for responding. I wasn't planning on powering my 3V with 6V directly. My plan is at this point use two equal resistors to get to 3V. I think they call it a chopper circuit? Anyway, It's a voltage divider. And after I get the motor to 3V, I have to worry about the current, so was planning on using a MOSFET with flyback diode and resistors to switch on the motor. I use a stuffed animal (cat) in my useless box, and the small motor is to be mounted inside the cat's head as a vibration motor. This is only an add on to a box I've already completed, and works great. I st...
Hi Randofo! I took a robot course that you taught, which included your Telepresence Robot. You were an amazing teacher, and there have been many times I wanted to ask you a question b/c you don't talk down to people. So thanks for responding. I wasn't planning on powering my 3V with 6V directly. My plan is at this point use two equal resistors to get to 3V. I think they call it a chopper circuit? Anyway, It's a voltage divider. And after I get the motor to 3V, I have to worry about the current, so was planning on using a MOSFET with flyback diode and resistors to switch on the motor. I use a stuffed animal (cat) in my useless box, and the small motor is to be mounted inside the cat's head as a vibration motor. This is only an add on to a box I've already completed, and works great. I still go back to my notes from you class! Do you have any ideas? Am I way wrong with my thoughts? And I was thinking about an 2N7000 or IRF540. Would they be suitable or should I use something else? Thanks for taking the time!!!
I did some more research, and now I see why a divider isn't the best choice at all. So I guess it's the zener. However, I watched a video that said linear regulator was a better option. Seriously though, what would you do?
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Thanks for all your help!
Thanks so much for your reply. Yes, I was worried about the current spike with the Uno. I have been looking at other projects online, and Arduino.cc, and saw that the I/O's are 20mA, so what I'd like to do is out of the question without some more control. I have shields, but hate to use them only to spin a small vibrator motor occasionally. Do you know if something like a DRV8833 breakout would work for me? Thanks again for your help.
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Great Job! I love scale models, and I have made mini houses, also. I forget the scale, but it was about the same as a Matchbox or Hot Wheels car. Anyway, I can appreciate your excellent work!
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