 | | Cannot download pcode on a Mac G3
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Hello everyone, I've been having a problem downloading pcode to a handyboard or rugwarrior board from my Mac G3 (266 Mhz desktop model). When I try to download the bootstrap code, it reports that the bootstrap failed after 000 bytes, etc.. etc... (...) (26 years ago, 3-May-98, to lugnet.robotics.handyboard)
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| | Controlling a DC motor 3
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Thank your for all your replies, I understand what 's going on now Another question about the motor driver is: Q) The PWM is a sequence of pulses switching on & off the H-Bridge. But what should be the rate of PWM? 1000Hz?? why? what does the rate (...) (26 years ago, 3-May-98, to lugnet.robotics.handyboard)
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| | LCD Addressing - & - Expanded Mode
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Two questions: 1) I'm having a little trouble figuring out how the LCD is addressed. It uses A8 and A8 but also is clocked from Port A. Can someone explain how to properly address the LCD using ASM? 2) The Mode B pin is always grounded. How does the (...) (26 years ago, 3-May-98, to lugnet.robotics.handyboard)
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| | recharging a battery the right way
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hello I have a 6v 2.0amp battery. Its a lead acid battery. What is the right way to recharge it? The reason I ask is because I had a 12v 7amp battery from the same manyfacturer. I charged it using a car battery charger at the lowest setting (...) (26 years ago, 3-May-98, to lugnet.robotics.handyboard)
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| | Polarity of PowerJack from HB und Charger Board
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Hi I am wondering about the Polarity of the Power Jack at the Handyboard and the charger board. At the HB the Pin in the middle is ground. At the charger board the outside Ring is ground.Can anybody tell me why it is different ? Thanks (...) (26 years ago, 3-May-98, to lugnet.robotics.handyboard)
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| | IC communication problem
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Hello, Lately I am having problems communicating with the handyboard after it is reset. I can download the pcode_hb.s19 file using hbdl.exe downloader. When the Handyboard is reset by toggling the power switch, the following is observed. 1st symptom (...) (26 years ago, 3-May-98, to lugnet.robotics.handyboard)
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| | whoops, wrong test program
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Attached to this message is the test program and S19 file for the LCD code. --Chuck (26 years ago, 3-May-98, to lugnet.robotics.handyboard)
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| | My LCD driver
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Attached to this message is the LCD driver I wrote for the Handyboard written using ICC11. Feel free to use it. Some notes on it: The driver is designed to operate asynchronously. This is because the LCD can take several milliseconds to complete its (...) (26 years ago, 3-May-98, to lugnet.robotics.handyboard)
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| | Controlling a DC motor 2
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Hi again, I think i should change my previous question to the following. Is there any alternatives to control a DC motor motion (speed, direction etc) without using a motor driver? how? please explain briefly. Thank you for your replies. (26 years ago, 3-May-98, to lugnet.robotics.handyboard)
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| | Handy Board problem
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I was wondering if anyone knows where I could purchase the Sharp Is1U60 IR detector. I have looked for it, however none of the distributors I have checked with even carry it. I tried Digikey, Mouser Electronics, JDR, Jameco, BG Micro, and others. (...) (26 years ago, 3-May-98, to lugnet.robotics.handyboard)
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| | 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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