 | | Re: motors
|
|
Mar, You might want to try attaching a small (0.1uF) capacitor to the motor leads as close as possible to the motor. Use a ceramic or monolithic ceramic capacitor. That might reduce the motor noise your sonar board sees. Also remember that even (...) (27 years ago, 21-Apr-97, to lugnet.robotics.handyboard)
|
| |
| | GPS
|
|
Hi, I want to connect a gps-receiver which provides NMEA-0183 data to the HB. Did anyone connect a gps to the HB before? Carsten (27 years ago, 21-Apr-97, to lugnet.robotics.handyboard)
|
| |
| | Using Step-Motors
|
|
A couple people have expressed interest in how to use step-motors with their handyboards. I have used step-motors with my miniboard, and since both the handyboard and the miniboard use two L293D chips to run the motors, I am fairly confident that (...) (27 years ago, 20-Apr-97, to lugnet.robotics.handyboard)
|
| |
| | Re: motors
|
|
I haven't had the same poblems, but I have a theory as to your problem. There are two probabilities: 1) The motor is causing too much noise and is interfering with the sonar, or 2)The motor is giving off electrical noise (i.e. electromagnetic waves) (...) (27 years ago, 19-Apr-97, to lugnet.robotics.handyboard)
|
| |
| | motors
|
|
Hi, I have some motor trouble. I have two motors. I have a polaroid sonar. When I run one of the motors, the sonar works. When I run the other motor, the sonar's detected distance jumps arround randomly. The randomness seems to be more at higher (...) (27 years ago, 19-Apr-97, to lugnet.robotics.handyboard)
|
| |
| | hbsonar
|
|
I am trying to run 4 sonar sensors from the HB, and I'm not sure how to go about doing this. I have a copy of the code from the ftp://cherupakha.med...ntrib/kent directory, but I'm pretty bad with assemby language and I'm not sure what I would need (...) (27 years ago, 19-Apr-97, to lugnet.robotics.handyboard)
|
| |
| | Stepper motors driver circuit and .s19 compiler...
|
|
Hi, I heard from fred that there is someone out there who had used stepper motors with the handyboard, I am doing something which need to use stepper motors. Therefore I need your help in this area, please email me how should I go about design the (...) (27 years ago, 19-Apr-97, to lugnet.robotics.handyboard)
|
| |
| | Stepper motors driver circuit and .s19 compiler...
|
|
Hi, I heard from fred that there is someone out there who had used stepper motors with the handyboard, I am doing something which need to use stepper motors. Therefore I need your help in this area, please email me how should I go about design the (...) (27 years ago, 19-Apr-97, to lugnet.robotics.handyboard)
|
| |
| | Re: Stepper motors driver circuit and .s19 compiler...
|
|
Good Day All, I also would like more info on this. If not too much trouble, could it be posted to the whole board as well? Take care... (27 years ago, 18-Apr-97, to lugnet.robotics.handyboard)
|
| |
| | Re: Good books about electronics
|
|
The ISBN is: 0-521-37095-7 I took the class at harvard that the book was written for. It was a good class. I learned a lot. I'm not so good with the analog stuff though... There is a student manual which is pretty helpful too. It's by Hayes and (...) (27 years ago, 18-Apr-97, to lugnet.robotics.handyboard)
|
| |
| | Re: motor driver chip....
|
|
SGS-Thomson makes the L293D and L293E: www.st.com/stonline/...s/1330.htm You can also build a custom H-bridge motor driver using the MAXIM 620&621 MOSFET drivers. Search for Maxim in a search engine. jm (...) (27 years ago, 18-Apr-97, to lugnet.robotics.handyboard)
|
| |
| | Re: motor driver chip....
|
|
(...) Depending on the manufacturer, you might be able to get the specs online, usually in the form of PDF files that are the datasheets for the chip. I know national semiconductor does this, and it's very fast and easy...otherwise, you have to try (...) (27 years ago, 18-Apr-97, to lugnet.robotics.handyboard)
|
| |
| | Re: Good books about electronics
|
|
By far the best book for all kinds of electronics is "the art of electronics" by Horowitz and Hill. There is not a lot of "what is electricity" (try a good encyclopedia). This book begins with basic network theory and goes from there through just (...) (27 years ago, 18-Apr-97, to lugnet.robotics.handyboard)
|
| |
| | Re: motor driver chip....
|
|
see the hb suppliers page for dealers who sell the l293d. (URL) your message you said: (...) n. (...) (27 years ago, 18-Apr-97, to lugnet.robotics.handyboard)
|
| |
| | Good books about electronics
|
|
Hi! I'm very new in this business. So I thought where could I get a good tutorial book about electronic components and the way they work. And most important - what is electricity and how it works. Can anyone advise me? mike (27 years ago, 18-Apr-97, to lugnet.robotics.handyboard)
|
| |
| | motor driver chip....
|
|
hola, I was planning on using the L293D motor chips in a project that I'm working on. I'm going to use polaroid motors to drive a vehicle. I was wondering: -Does anyone know how I could get specs for this chip? -Are there other motor chips that (...) (27 years ago, 18-Apr-97, to lugnet.robotics.handyboard)
|
| |
| | When will the expansion board come out?
|
|
Hi, does anyone know when the expansion board will be available? Thanks, Duncan (27 years ago, 18-Apr-97, to lugnet.robotics.handyboard)
|
| |
| | battery life and charging
|
|
Did someone already try to program the handy board the way to enable it testing the battery´s status and - if necessary - driving to a "docking station" and reloading the battery? (Self-feeding-automatism) Someone an idea how to solve this problem (...) (27 years ago, 17-Apr-97, to lugnet.robotics.handyboard)
|
| |
| | Re: line following
|
|
Chuck, Chuck, Chuck...not EVERYONE in engineering and robotics is male. I, myself, am quite definitely *not*, nor ever will be, male. Engineering is a co-ed field, and women have made their mark upon it. While there are few of us compared to the (...) (27 years ago, 17-Apr-97, to lugnet.robotics.handyboard)
|
| |
| | line following
|
|
I have had great success with black tape on many different light colored backgrounds but I wasn't using discrete components for the sensors and emitters. Instead, I used Omron EE-SY313 amplified infrared photosensors, and plugged them right into the (...) (27 years ago, 17-Apr-97, to lugnet.robotics.handyboard)
|
