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Hello KlausST,
Again, all your technical input is highly appreciated, which is part of my previous reply.
Although I feel some of your non-technical inputs are discouraging, it does not mean I will not continue to ask questions in this forum. If you think it is a waste of your time to reply to...
Hello KlausST,
While I acknowledge your statement about my NOT understanding of step/dir and encoder, I disagree with your conclusion that I am trying to find a solution for a non-existent problem.
The context is, I want to learn the encoder, the step/dir, and the microcontroller programming...
Hi D.A.(Tony)Stewart and FvM,
Thank you both for your education!
In my project, I want to use the turning of this rotary encoder to turn on the motor. And the block diagram I was thinking of is like this:
In the block diagram above,
(1) the rotary encoder is the one I was talking about in the...
Hi all,
I am learning the operation of a rotary encoder, and I have used this one (https://www.epitran.it/ebayDrive/datasheet/25.pdf) to connect to Arduino Uno. The schematic is shown below.
When I rotate the encoder, I also captured the waveform of channels A and B.
We can tell the...
Hi Klaus,
Thank you so much for your help!
To answer some questions you pointed out:
1. since it is signal level without the need to drive something, I assume any rail-to-rail op-amp can do the work
2. thank you for your clarification and education on the term "shift"! I do not need to adjust...
Hi All,
I have an arbitrary waveform generator that can generate square/sine wave signals up to 1MHz, and it has a 2.5V peak-to-peak voltage level (like -1.25V to 1.25V or 0 to 2.5V). I am looking for an off-the-shelf device to work as a buffer to generate the signal that has the same shape but...
Hi Dana,
Thank you for your help! I will go over all the tutorials you shared and post any follow up questions.
1675030474
Hi Klaus,
Since you have known my case, I am trying to evaluate the difference between using the "encoder alps" that you recommended and the poti I already have.
Since my...
Hi Klause,
Thank you for your reply. I am using a servo motor that has an encoder in it in the loop. It seems like the encoder integrated with my brushed DC motor is not identical to the encoder you defined.
The following is my block diagram. Would you advise if I change my poti to the "encoder...
Hi Klause,
Thank you so much! Since "idle" could be a problem due to the noise introduced by ADC, would you recommend just using keeping DIR as the GND for the cases including (1) turning the knob in CCW, and (2) idle?
If there are more considerations that should be considered, would you advise...
Hi All,
I am trying to implement a knob-controlled step/dir mechanism to drive the motor using Arduino and any necessary circuits.
This is what I have and what I want to achieve. Would anyone give me some suggestions on what can be done using the MCU and/or any necessary external circuits? Any...
Hi wwfeldman,
Yes, your suggestion works! This is the solution that can accommodate both US and EU. Just FYI, I found two disadvantages:
1. the price is very high. If we are comparing the US-only UPS in Amazon.com, this one is almost 20 times more expensive.
2. there are no standard connectors...
Hi All,
I want to find out an off-the-shelf UPS that can support both 120V/50Hz in the US and 230V/50Hz in EU for computers. However, I have some questions.
My understanding is:
(1) for most of the offline/standby UPS, this is not possible, since we have a direct path from AC input to the AC...
Hi stenzer,
Thank you so much for your advice! According to your advice, I have some followed up questions:
1. Do you mean I can use +12V to lift up and a swapped polarity -12V supply to implement "pull down" as the reverse activity of the lift up?
2. If I am using a actuator, does this mean...
Hi All,
I am new to motor and motor drive and want to ask the questions for the procedure to select the components based on the rough application requirements.
This is my example application:
1. I want to use an electric motor to lift up an object with a 1 kg weight
2. the lift speed can be...
Thank you BradtheRad! Would you also provide some suggestions to quickly learn digital design and embedded programming?
My background is more related to analog electronics. Sometimes I found it difficult to understand some of the C code because they are related to the CPU operation (like...
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