 | | Source of 754410 driver
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Hello, all: I saw in the FAQ that TI has an "upgrade" to the L293 motor driver chip. What is the best source for this part? Thanks! Rich Cini/WUGNET - ClubWin!/CW7 - MCP Windows 95/Windows Networking - Collector of "classic" computers <===...=== (...) (26 years ago, 22-Oct-98, to lugnet.robotics.handyboard)
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| | Re: Sensor connections
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i think you may be using the wrong drivers. make sure to set your version of IC to load "lib_hb.lis" when it boots up. fred In your message you said: (...) (26 years ago, 22-Oct-98, to lugnet.robotics.handyboard)
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| | Getting started with the project
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Respected Sir, I have installed the newer version of IC into my PC. My Handyboard is ready with all parts assembled. Earlier I have done a project called "Mobile Robot Navigation of a Maze" with this handyboard. In this the robot navigates the maze (...) (26 years ago, 22-Oct-98, to lugnet.robotics.handyboard)
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| | Sensor connections [DAT]
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I can not get the sensors to respond correctly, for instance if I do analog(0) the value of the sensor marked 7 on the hb is returned. After going through all the sensors here is the layout I came up with: I never got a reading on port 0,1,9 or 10 (...) (26 years ago, 22-Oct-98, to lugnet.robotics.handyboard)
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| | Re: Dead HB
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Sounds like a lot of it is still up and running if you can download. I'd suggest going through the assembly instructions and performing the tests at the end of each section. You should, thereby, be able to isolate smaller areas that may be fried and (...) (26 years ago, 22-Oct-98, to lugnet.robotics.handyboard)
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| | RE: Read A/D converter
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I didn't look that closely at your program but I have included a routine to read the analog ports that I know works. After assembling and loading the program, you make two c function calls: powerup_ad(); and read_ad(i); where i is the analog port (...) (26 years ago, 22-Oct-98, to lugnet.robotics.handyboard)
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| | Re: No stepper motor info in FAQ?
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(...) HB? (...) Allegro Systems UCN5804B is $3 and change from Newark Electronics. That's not so many $s. It can drive steppers up to 1.25A. The interfacing is easy, datasheet available on-line. Hope this helps, Art (26 years ago, 22-Oct-98, to lugnet.robotics.handyboard)
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| | Re: data capture
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Justin, I didn't see anyone reply to your RS232 Question. ALthough I am a newbie to the Handyboard, I have been doing RS232 programming off and on for years. My conclusion is that there have been MANY null modem configurations...but, they seem to be (...) (26 years ago, 22-Oct-98, to lugnet.robotics.handyboard)
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| | Expansion Board availability?
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Ok, I found the link to the Expansion board info website...it's all about a beta version. But, there appears to be enough information there for me to build one myself. (is that what everyone's done?) I have never built something from scratch like (...) (26 years ago, 22-Oct-98, to lugnet.robotics.handyboard)
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| | No stepper motor info in FAQ?
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Hi all, I just finished searching the FAQ for stepper motor driving tips and found none. :( Anyone know what the most efficient way to connect a stepper motor to the HB? I know that they have these $8ish driver chips...but I've never used one. If (...) (26 years ago, 22-Oct-98, to lugnet.robotics.handyboard)
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