Search found 85 matches
- Sun Aug 07, 2005 7:43 am
- Forum: Computer Programming
- Topic: IR Remote decode blues
- Replies: 10
- Views: 6505
Re: IR Remote decode blues
I guess having all of the prebuilt code is quite useful. I just want to use IR decode, I don't want to invent it and for simple IR controlled toys the little 14 pin Perseus is very handy. I have a hexpod using this and a couple of track type toys using the DIOS chip although Perseus would work.<p>Th...
- Fri Aug 05, 2005 8:19 am
- Forum: Computer Programming
- Topic: IR Remote decode blues
- Replies: 10
- Views: 6505
Re: IR Remote decode blues
There are MANY different encoding schemes so select the remote you want to use first.<p>There is one scheme where the data stream is quite long and contains the complement of the data as part of the string.<p>Most codes start with a device code followed by a command sequence.<p>The fastest way to ge...
- Thu Aug 04, 2005 5:25 pm
- Forum: General Discussion
- Topic: car jumper cable question
- Replies: 9
- Views: 4135
Re: car jumper cable question
Passing over the safety issues, for a 3000W inverter at, say 80% efficiency to run off a 12V battery takes 3000 / (12 * 0.8) amps -> 312.5 amps.<p>Unless you have a GIGANTIC battery system, the battery won't last even a minute! And, automotive batteries are designed to provide high current for an ex...
- Fri Jul 29, 2005 6:12 pm
- Forum: General Discussion
- Topic: Ramp Start Devices
- Replies: 9
- Views: 3475
Re: Ramp Start Devices
Most small tools like routers use universal motors - those with brushes. These are just DC motors and respond quite well to speed control via voltage. So, they use a PWM (pulse width modulation) to vary the voltage to the armature.<p>AC induction motors don't change speed by changing voltage - you h...
- Sun Jul 24, 2005 9:29 pm
- Forum: General Discussion
- Topic: X-Channel Analog-to-Digital Converter
- Replies: 2
- Views: 1807
Re: X-Channel Analog-to-Digital Converter
I have found the device datasheets to be very specific. But you have to read carefully...<p>Yes, for some PICs various inputs to the A/D converter can remain digital. There are three things you need to read: The specific A/D section of the datasheet for the device you are using. The Mid-Range MCU Fa...
- Sun Jul 24, 2005 9:05 am
- Forum: General Discussion
- Topic: MERC - V. REG. OUTPUT
- Replies: 12
- Views: 7097
Re: MERC - V. REG. OUTPUT
No, the voltage doesn't jump. I would look at the measurements again. How do you know the batteries are charging? Just because they have voltage? Or are you measuring the current and direction?
- Sun Jul 24, 2005 9:01 am
- Forum: General Discussion
- Topic: foreign volts
- Replies: 7
- Views: 3708
Re: foreign volts
You can buy 'travel adapters' that will convert the plug and voltage. They won't, of course, change the frequency.<p>Try Google or Radio Shack
- Thu Jul 21, 2005 7:03 pm
- Forum: General Discussion
- Topic: Drawing Schematic's Circuitary Diagram
- Replies: 13
- Views: 6419
Re: Drawing Schematic's Circuitary Diagram
I use the free software from ExpressPCB. One component is for drawing schematics and the other for laying out PCBs
- Thu Jul 21, 2005 1:37 pm
- Forum: General Discussion
- Topic: MERC - V. REG. OUTPUT
- Replies: 12
- Views: 7097
Re: MERC - V. REG. OUTPUT
I would put it back in the factory configuration and then measure the voltage with the motor running.<p>If I had to guess, I would guess the alternator has run without a battery and the alternator diodes are toast. But that is just a guess.
- Wed Jul 20, 2005 6:54 pm
- Forum: General Discussion
- Topic: Google Mapping and the Moon
- Replies: 9
- Views: 4965
Re: Google Mapping and the Moon
Did you zoom way in? Very interesting!
- Tue Jul 19, 2005 5:59 pm
- Forum: General Discussion
- Topic: Automobile Inverters
- Replies: 11
- Views: 6781
Re: Automobile Inverters
Large inverters such as you propose are used on sailboats all the time. But, then, they use very large storage batteries and maybe run for an hour. Oh, and huge, but very short, wire.<p>The average auto alternator might put out 30 amps or about 360 watts. Maybe there are a few on luxury cars that ar...
- Sat Jul 16, 2005 9:12 pm
- Forum: General Discussion
- Topic: laser wire stripper?
- Replies: 9
- Views: 5382
Re: laser wire stripper?
There are certainly thermal strippers. They just use a hot wire to melt the insulation.<p>I haven't seen anything that uses a laser.
- Sat Jul 16, 2005 11:34 am
- Forum: General Discussion
- Topic: keyboard
- Replies: 12
- Views: 5696
Re: keyboard
See the first post - the button image can be changed.
- Thu Jul 14, 2005 3:20 pm
- Forum: General Discussion
- Topic: keyboard
- Replies: 12
- Views: 5696
Re: keyboard
It is certainly possible. I have seen those graphic buttons advertised for industrial controls.<p>However, I'll bet this is one expensive piece of equipment! Maybe in the several thousand dollar bracket.<p>No results searching for Optimus PC Keyboard on google.
- Thu Jul 14, 2005 1:03 pm
- Forum: General Discussion
- Topic: Single-Three phase current
- Replies: 1
- Views: 1349
Re: Single-Three phase current
Of course! If the neutral conductor is present the panel can support single phase loads. For example, a 208/120V 3ph wye connected panel will support 3 ph 208, single phase 208 and single phase 120V loads and the breakers can be installed in any position.<p>A 240/120V 3 phase open delta panel can su...