 | | MODB - How Is Expanded Mode Entered
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If MODB pin is always grounded, how does the MCU get into expanded mode to access the 32K SRAM? The data sheet shows MODB HIGH to enter expanded mode. It show MODB LOW to enter single chip mode. What am I missing? -- ---...--- ipscone@halcyon.com (...) (26 years ago, 2-May-98, to lugnet.robotics.handyboard)
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| | Connections
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Please forgive this probably silly question; as a software person I only dabble in hardware as a hobby: I want to make my own little expansion board and it requires signals from the expansion connectors of the HandyBoard. In particular I want to run (...) (26 years ago, 2-May-98, to lugnet.robotics.handyboard)
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| | 6.270 board
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What is 6.270? Where did this number come from? ---...--- ericson mar Master of Engineering Candidate Project: Mobile Robotics mar@cooper.edu (212)353-4356 Department of Mechanical Engineering The Cooper Union for the Advancement of Science and Art (...) (26 years ago, 2-May-98, to lugnet.robotics.handyboard)
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| | Re: Testing with PCBUG11 - Getting Close
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My problem turned out to be with Win 95. If I boot to DOS the PCBUG11 program works fine. It fails to work when working from a DOS window. I can now communicate with the MCU so my RS232 must be fine. When working from the command line in PCBUG, I (...) (26 years ago, 2-May-98, to lugnet.robotics.handyboard)
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| | Testing with PCBUG11
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I have assembled the HandyBoard up to the point of adding the SRAM. I am still waiting for my SRAM to arrive. But, I want to check out as much as possible. Every step checked out fine to this point. I have two options at this point. I have an 6264 (...) (26 years ago, 2-May-98, to lugnet.robotics.handyboard)
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| | controlling a DC motor
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Hello, i am currently trying to control a DC motor's motion (direction, speed, etc). Besides using a motor driver chip such as L293D, what else can i do to control the motor's motion?? Say, is there a method which can control the motor by totally (...) (26 years ago, 2-May-98, to lugnet.robotics.handyboard)
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| | DS1233 Monitor Chip
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I cannot locate a DS1233 chip. I have tired DigiKey, Jameco, Mouser, Active. What is a good source for this part? I have an MC34064. Looks similiar except that it has no 350mSec delay and a different pinout. Has anyone tried this chip without any (...) (26 years ago, 2-May-98, to lugnet.robotics.handyboard)
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| | Schematic & PCB freeware
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Ivex has a very good schematic and PCB layout demo at www.ivex.com ,the only difference between the demo an the full version is the demo is limited to 100 pads. (26 years ago, 2-May-98, to lugnet.robotics.handyboard)
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| | Max232CPE Substitutions
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I used a Max202 in place of the Max232. I installed it with the 10uF caps. Since the 202 can be used with .1 and I already installed the 10uF ones. I decided to switch it for a 232. The 202 checked out (V wise) like the installation instructruction (...) (26 years ago, 1-May-98, to lugnet.robotics.handyboard)
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| | Re: Schematic drawing - freeware ???
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Try to look up MicroSim ...or something like that name. It has a crippled evaluation package that may suit your needs. I think the company is the developer of psplice. ---...--- ericson mar Master of Engineering Candidate Project: Mobile Robotics (...) (26 years ago, 1-May-98, to lugnet.robotics.handyboard)
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| | RE: Schematic drawing - freeware ???
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I came across this web page today. It may have what you are looking for. (URL) Message----- From: Les Novotny [mailto:les@progress...tions.com] Sent: Friday, May 01, 1998 11:03 AM To: handyboard@media.mit.edu Subject: Schematic drawing - freeware (...) (26 years ago, 1-May-98, to lugnet.robotics.handyboard)
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| | Re: loading files
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It suggests you are not loading lib_hb.c on start up. If you type list files at the IC command line you should see this file listed, as well as any others. If it isn't there, check your lib_hb.lis file and be sure lib_hb.c is listed in it. (...) (26 years ago, 1-May-98, to lugnet.robotics.handyboard)
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| | Schematic drawing - freeware ???
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Hi, Has anyone come across a freeware schematic drawing package for Windows PC? Any help would be much appreciated. thanks in advance. Les (26 years ago, 1-May-98, to lugnet.robotics.handyboard)
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| | Re: V2x and sonar
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If you only use one motor controller IC you can use the 16 pin socket of the second motor control to get 4 more outputs. Then you can connect the INIT and BINH to these and have Port D control your V2x compass. All you have to do is modify your (...) (26 years ago, 1-May-98, to lugnet.robotics.handyboard)
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| | loading files
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Hi, I am having problems loading my files onto handyboard. Whenever I try to load a file, it says ; function analog undefined function motor undefined It used to work fine before and I don't know why I am having this problem all of sudden. Can (...) (26 years ago, 1-May-98, to lugnet.robotics.handyboard)
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| | V2x and sonar
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Hi, Wouldn't it be possible to wire them both to the same input port and turn on the one that you want information from and turn the other off? For example, the polaroid sonar data states that you can control turning on and off the device, so you (...) (26 years ago, 1-May-98, to lugnet.robotics.handyboard)
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| | SPI Interface
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Hi, is there anywhere a function for IC 3.2 to communicate via the SPI interface with another controller ? Thanks in advance. Erwin (26 years ago, 1-May-98, to lugnet.robotics.handyboard)
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| | Alternate Part - DB101-ND
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I could not get the bridge rect from digikey for the DB101-ND. Does anyone know of an equivelant part(s) that I might get somewhere else? Otherwise I'll have to wire some diodes up for this. -- ---...--- ipscone@halcyon.com Shoot-To-Win! Protect the (...) (26 years ago, 1-May-98, to lugnet.robotics.handyboard)
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| | Re: Quick prototyping technologies
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(...) I recently contacted Vero aboout Speedwire. The product is indeed discontinued and they have no old stock in the UK. However, speedwire pins are, apparently made for them by someone else. Unfortunately they could not find out (at that time) (...) (26 years ago, 1-May-98, to lugnet.robotics.handyboard)
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| | Re: Schematic Question
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You're missing the fact that the telephone style RJ-11 cable is an inverting cable. see page 11 of 16 of the Handyboard FAQ at (URL) a discussion and diagram of this (and the consequences of using the wrong cable!). -patrick ---...--- (...) (26 years ago, 1-May-98, to lugnet.robotics.handyboard)
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