 | | SPI port config???
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Anyone.... This query pertains to the reconfig of the SPI on the HB done with a poke(0x1009, 0x3c) which turns the MISO, MOSI, SCK and SS into digital outputs. My question is: "What is the reverse poke if I wanted to turn the SPI back from digital (...) (28 years ago, 27-Mar-97, to lugnet.robotics.handyboard)
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| | Re: Mini Rebound RC
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(...) Just because the motors are small dosn't mean they don't pull a big load. Both Adam Cox and myself have been working with the bulldozer kit (from the robot store) and have found they really heat up the motor driver chips (TI SN754410NE). We do (...) (28 years ago, 26-Mar-97, to lugnet.robotics.handyboard)
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| | Re: Mini Rebound RC
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check out www.robotstore.com and look under kits. There are gear kits and a bulldozer kit that I used two of for a robot. It is not too fast and it pulls a big load, doesn't pull much current (small motors). You might also try the manufacturers page (...) (28 years ago, 26-Mar-97, to lugnet.robotics.handyboard)
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| | Re: Analog ports....
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I was aware that IR sensors can only give digital (on/off) information. Using analog ports will not give you any extra information. Perhaps the ON voltage level of your circuit is lower that 5V and that each of your sensor circuits differ in such a (...) (28 years ago, 26-Mar-97, to lugnet.robotics.handyboard)
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| | Re: Neglection of U8 on Parts List
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Bill is right, U8 is a '374. Peter, where exactly are you looking that you don't see U8 listed? It's there at (URL) post URLs if you're trying to help me maintain the site. Thanks. -Fred In your message you said: (...) (28 years ago, 26-Mar-97, to lugnet.robotics.handyboard)
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| | Broken DS1233-10?
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Hello! I've started work on my Handy Board again, after a brief wait for the memory to arrive, and as soon as I plugged in the boad, I had a problem. I first noticed when I tried to put the board into bootstrap mode, as detailed at the end of (...) (28 years ago, 26-Mar-97, to lugnet.robotics.handyboard)
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| | Neglection of U8 on Parts List
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I am not sure how significant this is but page 35 of the assembly instructions lists U8 as a 74HC374 and not a 74HC373 chip as the sender indicates. (...) William F. Conroy III conroyw@acm.org Lt Col, USAF (28 years ago, 26-Mar-97, to lugnet.robotics.handyboard)
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| | Re: HB IR port
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Hi Terry, I believe the transmitter circuit already include the 40Khz carrier. You need to write code to modulate the carrier with the low frequency of your information that you want to transmit too. You can do it with simple on/off at the lower (...) (28 years ago, 26-Mar-97, to lugnet.robotics.handyboard)
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| | Re: Odometers
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"You pass this way but once, do it right" (...) Exactly the problem. So I've kind of rigged my motor code to take care to create more than 7 speeds. For instance, by alternating between to levels of PWM very quickly you can fake more motor speed (...) (28 years ago, 26-Mar-97, to lugnet.robotics.handyboard)
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| | Re: Flame detection (Cool Sensor....)
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(...) Yoni, (everyone else) An interesting site: www.infusionsystems.com These guys produce some interesting sensors. Cheers! (28 years ago, 26-Mar-97, to lugnet.robotics.handyboard)
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| | Re: Odometers
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(...) Tom, The problem most likely is not with the code but with the motor driver software. At the present time, the handy board motor driver routine only allows you to select from 7 power levels to the motor. With only 7 levels to choose from, you (...) (28 years ago, 26-Mar-97, to lugnet.robotics.handyboard)
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| | Mini Rebound RC
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I have seen alot of talk in the mail archives on converting RC cars (motors) and the jist i get is that they just draw two much current and are to fast. There is a smaller version of the Rebound RC car called the Mini rebound has anyone had any luck (...) (28 years ago, 26-Mar-97, to lugnet.robotics.handyboard)
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| | HB IR port
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Hello everyone, I'm interested in trying, possibly using the 40 Khz IR emitter port on the HB. What is required to activate it? If it is code driven, does it bog down the controller much? Also if it is code driven, does anyone have some sample? Is (...) (28 years ago, 25-Mar-97, to lugnet.robotics.handyboard)
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| | Neglection of U8 on Parts List
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Hi, I noticed that U8 was neglected from the parts list. If anyone was wondering you can get it from Mouser. The part number is 570-CD74HC373E. Attn: Fred you might want to update the parts list. Thank You, Peter Eacmen (28 years ago, 25-Mar-97, to lugnet.robotics.handyboard)
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| | Please repost Sample Sonar Schematic
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I deleted the message about the sample sonar schematic posted today in my mailbox after reading it since I thought it was also posted on the website. I couldn't find it, so can someone please repost it on this mailing list or send me the original (...) (28 years ago, 25-Mar-97, to lugnet.robotics.handyboard)
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| | Re: Odometers
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Tom, What kind of encoders are inside these i.e., Hall Effect Sensors (magnetic), or IR LED emitters/detectors (optoelectronic)? Jose-Alfredo Esguerra WSU Mechanical Engineering Student Autonomous Mobile Robot Project (28 years ago, 25-Mar-97, to lugnet.robotics.handyboard)
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| | Digital Sensors & IR control (repost)
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Hi! I'm new on this list. I'm in the process of making what I hope will be an automonous mobile robot, controlled by the Handy Board. I want to add digital sensors to my program, and I've tried to do so, but the program unloads itself when I try to (...) (28 years ago, 25-Mar-97, to lugnet.robotics.handyboard)
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| | Re: Please repost Sample Sonar Schematic
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It is now linked from the HB Software Resources page. -Fred (URL) I deleted the message about the sample sonar schematic posted today in my (...) (28 years ago, 25-Mar-97, to lugnet.robotics.handyboard)
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| | Digital sensors & IR control
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Hi! I'm new on this list. I'm in the process of making what I hope will be an automonous mobile robot, controlled by the Handy Board. I want to add digital sensors to my program, and I've tried to do so, but the program unloads itself when I try to (...) (28 years ago, 25-Mar-97, to lugnet.robotics.handyboard)
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| | digital and analog ports...
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Hello all, I've run into a small problem with some of my digital and analog ports. When I check their current values (analog(??) and digital(??)), some of the values change, and some don't. I've checked the IR sensors, and switched the good ones (...) (28 years ago, 25-Mar-97, to lugnet.robotics.handyboard)
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