Search found 30 matches
- Thu Sep 02, 2004 4:32 am
- Forum: General Discussion
- Topic: Hints for a rookie writer?
- Replies: 34
- Views: 18489
Re: Hints for a rookie writer?
You could learn to spell hobbyists for starters
- Fri Aug 27, 2004 6:11 am
- Forum: General Discussion
- Topic: 12C509 programming
- Replies: 23
- Views: 9277
Re: 12C509 programming
check out rev-ed.co.uk their PicAxe system is a bootstrapped PIC, programmable in BASIC. Software is a free download with full tutorials. Programming hardware doesn't come much simpler than 2 resistors and a D9 plug. I have no connection with Rev-ed, just a satisfied user, and yes, I can program pic...
- Fri Aug 27, 2004 6:00 am
- Forum: General Discussion
- Topic: Need Simple Clock Design
- Replies: 1
- Views: 1359
Re: Need Simple Clock Design
Silicon Chip magazine have something you may be able to adapt. Check
http://siliconchip.com.au/cms/A_101797/article.html
http://siliconchip.com.au/cms/A_101797/article.html
- Wed Aug 11, 2004 10:15 am
- Forum: Robotics
- Topic: root locus diagram
- Replies: 10
- Views: 8131
Re: root locus diagram
just for the record, re the first computer, ENIGMA etc, have a look at
http://www.picotech.com/applications/colossus.html
Sorry guys, it wasn't ENIAC.
http://www.picotech.com/applications/colossus.html
Sorry guys, it wasn't ENIAC.
- Wed Aug 11, 2004 9:48 am
- Forum: General Discussion
- Topic: AC motor control
- Replies: 1
- Views: 1706
Re: AC motor control
presuming you want to speed control your lathe, no way home-brew unless you change to a DC or universal motor. Every lathe I have used, metal or wood, uses an induction motor. The only way to control these is with a variable frequency controller. The complexity, parts availability and safety issues ...
- Wed Aug 11, 2004 9:32 am
- Forum: General Discussion
- Topic: Servo Questions
- Replies: 9
- Views: 4864
Re: Servo Questions
check out rev-ed.co.uk They supply a range of PicAxe chips which are bootstrapped PICs, programmable in BASIC. Software is a free download with full tutorials. Programming hardware is 2 resistors and a D9 plug out of your serial port. The 'basic BASIC' language includes a 'servo' one-line command fo...
- Wed Aug 11, 2004 8:58 am
- Forum: General Discussion
- Topic: LED Sequencing
- Replies: 10
- Views: 4342
Re: LED Sequencing
Have a look at
rev-ed.co.uk
They supply a bootstrapped PIC chip series, programmable in BASIC. Software is a free download, and the programmer is 2 resistors and a D9 plug outta your serial port. Full tutorials are provided with the software, and the chips will drive leds directly.
Rgds, Lin
rev-ed.co.uk
They supply a bootstrapped PIC chip series, programmable in BASIC. Software is a free download, and the programmer is 2 resistors and a D9 plug outta your serial port. Full tutorials are provided with the software, and the chips will drive leds directly.
Rgds, Lin
- Wed Aug 11, 2004 8:50 am
- Forum: General Discussion
- Topic: DC to AC, low voltage, high amperage.
- Replies: 5
- Views: 2578
Re: DC to AC, low voltage, high amperage.
Agree, in part, with what Chris sez above but best advice is forget it and buy an AC HF TIG. It aint that simple. When welding aluminium, the positive half cycle cleans the oxide film from the metal, the negative half cycle provides the heat into the parent metal and filler wire. Get the balance wro...
- Wed Aug 11, 2004 7:01 am
- Forum: General Discussion
- Topic: Reversing Rotation of 115V Table Saw Motor
- Replies: 19
- Views: 10111
Re: Reversing Rotation of 115V Table Saw Motor
Along the lines of Ed B's suggestion, take a look at
http://www.homemetalshopclub.org/news/sep01/sep01.html
Rgds, Lin
http://www.homemetalshopclub.org/news/sep01/sep01.html
Rgds, Lin
- Wed Aug 04, 2004 8:33 am
- Forum: General Discussion
- Topic: RS-232 control of light bulb
- Replies: 10
- Views: 4780
Re: RS-232 control of light bulb
You really married to the serial port? If not, just use the parallel port. You've got 8 data lines dedicated to going click-clack. Use a ULN2803 darlington driver to pick off the signal and drive a relay.
- Wed Aug 04, 2004 8:20 am
- Forum: General Discussion
- Topic: solar tracker
- Replies: 2
- Views: 2100
Re: solar tracker
Best advice is, forget it. The power costs of driving an alt/az mount outweigh any advantage gained. Having said that, I've had success using 2 leds as sensor elements, op-amp comparator and feed the OP to a simple transistor switch or an H-bridge controller. Not being hypocrytical here ,I was using...
- Wed Aug 04, 2004 7:13 am
- Forum: General Discussion
- Topic: P.C.Board design
- Replies: 18
- Views: 8246
Re: P.C.Board design
Re cutting fibreglass PCB, I use 5" metal cut-off discs in an angle grinder. These discs are only 1MM thick and I also use em for cutting stainless steel, they're tough! Inox is the brand commonly available here in Oz. Sorry if this seems like a smartarse reply, but consider it. A little ingenu...
- Thu Feb 12, 2004 10:05 am
- Forum: Robotics
- Topic: computer-moved levers and fake digital info (long)
- Replies: 5
- Views: 5401
Re: computer-moved levers and fake digital info (long)
Marc, you are speaking my language. I have an old XT (yes with 5 1/4" floppy drive) doing the sorta stuff of which you speak. Too long to go into here, but if you'd like to leave a personal message, I'll get back to you with as many details as you like.
- Thu Feb 12, 2004 9:54 am
- Forum: General Discussion
- Topic: Intro to Microcontrollers HELP
- Replies: 8
- Views: 4513
Re: Intro to Microcontrollers HELP
PS, I've just googled "picaxe code" and come up with 429 hits
- Thu Feb 12, 2004 9:48 am
- Forum: General Discussion
- Topic: Intro to Microcontrollers HELP
- Replies: 8
- Views: 4513
Re: Intro to Microcontrollers HELP
Yup, me again. Yes I did it the hard way first, PIC assembler etc. When I came across the picaxe system I damn near wept! It is cheap, not much more than the original PIC chips. It is so easy for the beginner (and pro). The software is free and well supported. The programming "hardware" is...