 | | Re: DC adapter
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a regulated supply would be really nasty when you put the interface board in ZAP mode -- the supply would try to raise the level of the battery to 15v or whatever, and that would be bad. so unless you really know what you are doing, steer clear of (...) (27 years ago, 5-Sep-97, to lugnet.robotics.handyboard)
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| | Re: DC adapter
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(...) Isn't this a bit sweeping? Surely the problem is that a 12v regulated supply will not have enough headroom with a 9.6V battery. I use a 7.2V battery without problems (that I am aware of).It is not the regulation that is the actual problem but (...) (27 years ago, 5-Sep-97, to lugnet.robotics.handyboard)
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| | serial routines
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I was just curious with all the talk about serial routines if anyone has sucessfully attempted a wireless data link to the handyboard to the PC. It seems like if you had a fast enough wireless modem with a clean enough connection you should be able (...) (27 years ago, 5-Sep-97, to lugnet.robotics.handyboard)
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| | Re: Serial routines
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[Jeff Keyzer] spake unto the ether: [Re: my serialio.c and conio.c libraries] (...) This is good to hear...if there is anyone else out there using the routines, with either success or failure stories, please let me know. One design issue I wasn't (...) (27 years ago, 5-Sep-97, to lugnet.robotics.handyboard)
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| | Re: Serial routines
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(...) They're working great for me, no such problems. I can send/receive and decode characters into numbers very easily. I've got my HB hooked up to a 486 DX2/66 running Linux, using some simple C serial routines to communicate with the board. (...) (27 years ago, 5-Sep-97, to lugnet.robotics.handyboard)
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| | (no subject)
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I'm able to compile version 2.861 with Kent Farnsworth setup, but not ver 3.1 of the P-code. Has anybody been able to do this? I get a lot of phasing errors when I try. There is a problem with the current LCD initialization routine I would like to (...) (27 years ago, 4-Sep-97, to lugnet.robotics.handyboard)
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| | Re: Serial routines
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[Jodi Seaborn] spake unto the ether: (...) Hi Jodi, the serial input routines (i.e., from some other source to the Handy Board) do work, it's just that the I/O is polled, not interrupt-driven. Thus, unless the device sending characters sends them at (...) (27 years ago, 4-Sep-97, to lugnet.robotics.handyboard)
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| | Re: DC adapter
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Good question. Answer: DO NOT USE REGULATED ADAPTERS WITH THE HANDY BOARD. I will add this to the FAQ, because it is not obvious, but the HB power circuitry was designed explicitly for CHEAPO UNREGULATED WALL WARTS ONLY. sorry, Fred In your message (...) (27 years ago, 4-Sep-97, to lugnet.robotics.handyboard)
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| | DC adapter
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Hi all, Just another (hopefully unanswered) question about the DC adapter: Do the specifications stated in the FAQ (18 volts unconnected) also apply to _regulated_ adapters, or only to unregulated? I'm asking this because I just bought a new (...) (27 years ago, 4-Sep-97, to lugnet.robotics.handyboard)
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| | (no subject)
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I'm able to compile version 2.861 with Kent Farnsworth setup, but not ver 3.1 of the P-code. Has anybody been able to do this? I get a lot of phasing errors when I try. There is a problem with the current LCD initialization routine I would like to (...) (27 years ago, 4-Sep-97, to lugnet.robotics.handyboard)
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| | Re: Suppliers in Germany ?
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Hello, here is a list of suppliers in Germany. It's an Excel-sheet and I've attached it to this mail. I hope you can use this list. If you have any further questions you can send me an e-mail directly. Steffen. (27 years ago, 4-Sep-97, to lugnet.robotics.handyboard)
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| | Serial routines
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Has anyone used Richard Drushel's math and serial libraries with a real serial port? The HB seems to miss about every other character when I use any of the higher level functions. Thanks, Jodi Graf (27 years ago, 4-Sep-97, to lugnet.robotics.handyboard)
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| | (no subject)
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I have write a code for manipulate the LCD in the handy board. Because i can't use a battery backed RAM, i need to write in assembler. Well , i'm really read all the FAQ for LCD and for Handy board (including the apendix B for the 6270) .I'm using (...) (27 years ago, 3-Sep-97, to lugnet.robotics.handyboard)
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| | (no subject)
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German Pablo Gentile German Pablo Gentile Systems Engineer. Electronics Expert. (really??? ;>) ) ggentile@cvtci.com.ar (27 years ago, 3-Sep-97, to lugnet.robotics.handyboard)
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| | Re:
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(...) Check out Dave Chu's robotics and electronics page @ (URL) has schematics for what you are looking for! Hope this helps. Laz (27 years ago, 3-Sep-97, to lugnet.robotics.handyboard)
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| | Re: Pic board onto handyboard?
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(...) Hello Michael I might be able to help you out a bit! I think that the toy you are talking about is featured in the March 1996 issue of Electronics Now mag (cover page) It describes how to build a runabout Robot controlled by a Sony compatible (...) (27 years ago, 3-Sep-97, to lugnet.robotics.handyboard)
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| | motor drivers
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Hi all, I suppose that this is really a Mini Board quesiton, but it involves L293D motor drivers, so here goes. The Mini Board manual says that the MB accepts DC power supply of 6-36V. I was using power ranging from 25-32V to run one, and the L293Ds (...) (27 years ago, 3-Sep-97, to lugnet.robotics.handyboard)
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| | (no subject)
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I have a question to ask I want to use two 16V (maybe a bit more) motors and one 9V the question is To use either an Opto Darlington Isolator that my supervisor knows about, which uses the digital outputs where they are just switches or to cut the (...) (27 years ago, 3-Sep-97, to lugnet.robotics.handyboard)
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| | Pic board onto handyboard?
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Dear Handyboarders Some time ago I bought a toy that runs off 2 - 1.5 volt batteries. The controller board has a PIC on it, control of the toy was via a TV remote, and it ran two separate motors for the drive train. There is also an on/off switch. (...) (27 years ago, 3-Sep-97, to lugnet.robotics.handyboard)
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| | Re: IC version 3.1 -- FYI
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FYI IC3.1 is US$33.00 per copy (personal copy, download document), and US$20.00 with any assembled or unassembled kits. It is available in many different platforms. Patrick --00---...--- Low cost MIT Handyboard supplier and Official Distributor of (...) (27 years ago, 3-Sep-97, to lugnet.robotics.handyboard)
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| | Suppliers in Germany ?
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Hello, since the available HB parts-list only names part-suppliers form the US: does anyone have a list of suppliers (and article numbers) from Germany ? I would appriciate if it could be sent to the mailinglist (or directly to me). Thank you , (...) (27 years ago, 3-Sep-97, to lugnet.robotics.handyboard)
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| | HB IR transmit circuitry problem
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As I mentioned in the previous mail message my IR transmitter on the handy board oscillates @57kHz. I ordered the exact parts# form digikey as specified in the HB documentation and also did the math. The result should be a freg between 39 -40kHz. (...) (27 years ago, 3-Sep-97, to lugnet.robotics.handyboard)
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| | Re: HB IR transmit circuitry problem
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what value are you using for the R4 resistor? There was an incorrect value in some of the Handy Board documentation and it might not be fully expunged. Also, are you using a polypropylene capacitor for C6. -Fred -- This message was composed using (...) (27 years ago, 3-Sep-97, to lugnet.robotics.handyboard)
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| | (no subject)
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I have a question to ask I want to use two 16V (maybe a bit more) motors and one 9V the question is To use either an Opto Darlington Isolator that my supervisor knows about, which uses the digital outputs or to cut the trace close to the J13 and (...) (27 years ago, 31-Aug-97, to lugnet.robotics.handyboard)
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| | (no subject)
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It worked so thanks everybody It was the voltage it needed 12V Thanks again (27 years ago, 31-Aug-97, to lugnet.robotics.handyboard)
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| | Re: L293 Questions
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warm is normal, burn your fingers hot is not. jm (...) (27 years ago, 31-Aug-97, to lugnet.robotics.handyboard)
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| | Re: HB problem
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You need a 12V adapter and if both PWR and Batt are not OFF you are not in download mode. jm (...) should I > increase or decrease the voltage (...) (27 years ago, 31-Aug-97, to lugnet.robotics.handyboard)
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| | L293 Questions
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Hi all! Just for being sure: Is it normal that the L293Ds become warm when drawing ~0.5A for an extended period? Thanks, Jan (27 years ago, 31-Aug-97, to lugnet.robotics.handyboard)
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| | HB problems
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I have a problem: When I am trying to download the pcode_hb.s19 file a (...) I am using an adaptor providing 9V is that enough or should I increase or decrease the voltage When I provide the voltage on the HB pressing the STOP button the yellow (...) (27 years ago, 31-Aug-97, to lugnet.robotics.handyboard)
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| | Re: Download problems
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Usually, PC has two external serial ports (DB9 and DB25). The DB9 usually used by your mouse, and DB25 is connected to the external modem. The HB should be connected to DB25 in place of external modem, and it is usually configured as COM2. Another (...) (27 years ago, 31-Aug-97, to lugnet.robotics.handyboard)
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| | Re: Download problems
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Did you put the HB in download mode: power up while holding down the stop button? What box do you have? A Dell? I know of an issue with older Dell com ports. just guessin', jm (...) (27 years ago, 30-Aug-97, to lugnet.robotics.handyboard)
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| | Download problems
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Hello I just wanted to say that I have got the HB from Hong Kong two weeks ago but I didn't reply due to the fact that I had problems with my monitor Now that my computer works I am trying to see if the HB is working I have a problem: When I am (...) (27 years ago, 30-Aug-97, to lugnet.robotics.handyboard)
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| | HB IR transmit circuitry problem
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I just finished building my Handy Board and I was testing the IR transmit circuitry. I found that the oscillator was actually oscillating @ 57kHz instead of 39-41kHz. That makes it useless for now! I made sure to get the exact capacitor and resistor (...) (27 years ago, 30-Aug-97, to lugnet.robotics.handyboard)
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| | Re: IC version 3.1
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(...) Yes, the freeware MS-DOS/Windows tools have been known to have problems on some new/fast PCs. It all has to do with old serial drivers. Newton Labs stands behind the commercial product. I recommend that you try it. -Fred -- This message was (...) (27 years ago, 29-Aug-97, to lugnet.robotics.handyboard)
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| | IC version 3.1
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It has recently come to my attention that IC version 3.1 has been released. I have been using (actually struggling with) the earlier version that came with my purchase of an assembled Handyboard from Gleason Research. Does the new version work (...) (27 years ago, 29-Aug-97, to lugnet.robotics.handyboard)
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| | Re: Manipulate the LCD in assembler
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Folks, I gave it a little more thought, and had some coffee to wake me up. I remember now! Somehow I blew out the D0 line on my LCD and I had to use 4 bit mode from then on since the upper 4 addresses were still fine. I had forgotten that a long (...) (27 years ago, 28-Aug-97, to lugnet.robotics.handyboard)
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| | Re: Manipulate the LCD in assembler
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At 11:28 PM -0400 on 8/26/97, German Gentile wrote: Folks, Ok, I took a look at the code last night. I found simple errors like not initializing the stack, addressing variables in RAM chip when in single chip mode and forgetting to use # for (...) (27 years ago, 28-Aug-97, to lugnet.robotics.handyboard)
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| | RE: Size Conversions
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These sizes refer to the Unified Thread Standard. A 6-32 thread has 32 threads per inch and a nominal outer diameter of 0.138 inches. There are coarse (UNC) and fine (UNF) series (and some others that are less common), as follows: nom size major dia (...) (27 years ago, 27-Aug-97, to lugnet.robotics.handyboard)
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| | IC under NT
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(...) IC 3.1 for Windows 95/NT is written from the ground up as a 32-bit windows application, so the serial works fine under NT, regardless of the speed of your machine. If you want to try it out to see if it fixes your problem, here's a 7-day (...) (27 years ago, 27-Aug-97, to lugnet.robotics.handyboard)
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| | digital ins
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Hello again, I realized a solution to the amplified input problem that is simple and at least worth mentioning. A diode clamp (0-5V) does the job quite nicely, and is easy to build. I got the idea from Horowitz and Hill, "The Art of Electronics", (...) (27 years ago, 27-Aug-97, to lugnet.robotics.handyboard)
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