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basicx · Discussion list for the BasicX family of microcontroller chips
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Messages 22257 - 22288 of 23222   Oldest  |  < Older  |  Newer >  |  Newest
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22257
Hello all, Does anyone know what is the best way to variably control a 12v electro magnet through a bx24? I need to be able to smoothly change its power and...
i_cohen
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Aug 2, 2007
10:58 am
22258
PWM out to an amplifier. ... -- Scott R Carlson Mechanical Engineering, Rochester Institute of Technology [Non-text portions of this message have been...
Scott Carlson
kosine0
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Aug 2, 2007
11:30 am
22259
Hey, I'm trying to interface a BasicX to a MaxSonarEZ1<http://www.maxbotix.com/uploads/LV-MaxSonar-EZ1-Datasheet.pdf>, and have been running into a rather...
Nathaniel Barshay
trinitymishap
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Aug 2, 2007
3:21 pm
22260
... This sounds little different from PWM of a small motor. I'm sure you can use any brushed-DC-motor control solution like a 2-Amp H-Bridge ...
Tom Becker
b19063
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Aug 2, 2007
4:11 pm
22261
Hi, I'm trying to use a button, and I am completely confused. When the button is pressed (closed), I want pin 11 to go HIGH. Here is my current code: Option...
penguin.rocketry
penguin.rock...
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Aug 3, 2007
11:00 am
22262
Change your code to if(GetPin(12) = 0) Then Your switch should connect between pin 12 and ground. By assigning it to bxInputPullup, it will show high unless...
Thad Larson
highwayman_3...
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Aug 3, 2007
1:27 pm
22263
Add the following line after your call putpin =(11,1) : else call putpin(11,0) end if. What you are doing is setting pin 11 high, but not setting it to low if ...
njepsen@...
neil_jepsen
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Aug 3, 2007
8:23 pm
22264
Thanks for your help. Pullup is what is confusing me, i think. When the switch is closed, 5V flows through it. When the switch is closed, I want Pin 11 to...
Ian Cinnamon
penguin.rock...
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Aug 3, 2007
8:46 pm
22265
The pullup is only programmed for INPUTS i.e switches and sensors. A pullup is an internally programmable rsistor ( inside the BX) that is connected to +5 when...
njepsen@...
neil_jepsen
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Aug 3, 2007
9:22 pm
22267
I was trying to program it, and the dev. kit was powered by 12 volts. The BX24 got hot, I let it cool for 6 hours (it cooled in like 5 minutes, tho) and now it...
penguin.rocketry
penguin.rock...
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Aug 3, 2007
9:41 pm
22268
I think I get it now. My BX24 was damaged somehow, so the replacement is coming... In the meantime, I eventually want to be able to fire a nichrome wire from...
penguin.rocketry
penguin.rock...
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Aug 3, 2007
11:50 pm
22269
... "force" of the battery... That might be a great spot for an SCR, in the low side of the nichrome load. A signal on its gate will latch it on until the...
Tom Becker
b19063
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Aug 4, 2007
6:27 pm
22270
I know a bit about electronics, but not everything... what's an SCR and ISTM? Thanks! ... -- Ian [Non-text portions of this message have been removed]...
Ian Cinnamon
penguin.rock...
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Aug 4, 2007
6:53 pm
22271
... Sorry. It Seems To Me. An SCR, a Silicon Controlled Rectifier or Thyristor, is a three-terminal diode that, once conducting, normally stays on until no...
Tom Becker
b19063
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Aug 4, 2007
7:17 pm
22273
The nichrome will actually set off a small pyrotechnic charge (this is for a rocketry altimeter), which releases the parachute. Once the pyrotechnic charge...
Ian Cinnamon
penguin.rock...
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Aug 4, 2007
8:07 pm
22274
Putting your name and nichrome wire together suggests you are launching rockets with the BX. From a safety standpoint, I would stay away from SCRs. You could...
meenbombs
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Aug 4, 2007
8:08 pm
22275
Actually, when the nichrome wire heats, it heats instantly (it basically melts). Also, the nichrome will only be fired at apogee (the highest point of the...
Ian Cinnamon
penguin.rock...
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Aug 4, 2007
8:15 pm
22276
... Probably, yes. I suspect most any small SCR will be fine if it can handle the open-circuit supply voltage, the on current, and the gate voltage and...
Tom Becker
b19063
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Aug 4, 2007
8:22 pm
22277
By the sounds of the application an untimely firing wouldn't really endanger anybody so it isn't much of an issue. However, from an explosives standpoint (my...
meenbombs
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Aug 4, 2007
8:51 pm
22278
So a MOSFET is better? If so, would you mind recommending a good one? Thanks ... -- Ian [Non-text portions of this message have been removed]...
Ian Cinnamon
penguin.rock...
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Aug 4, 2007
9:14 pm
22279
Here is one from Digikey: http://www.digikey.com/scripts/DkSearch/dksus.dll?Detail?name=IRF510-ND They are available from most suppliers. Your application...
meenbombs
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Aug 4, 2007
10:45 pm
22280
That would be good, but do any companies offer one with free samples (I don't want to pay digikey $10 in shipping and handling for a $1 part)? Thanks ... -- ...
Ian Cinnamon
penguin.rock...
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Aug 5, 2007
11:01 am
22281
I am not sure where to find a sample but Radio Shack (Ugh) has a IRF510 MOSFET. However, it is only good for 3 amps but I suspect it will still work for your...
meenbombs
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Aug 5, 2007
2:40 pm
22282
www.bgmicro.com is only about $6 shipping. Also check All Electronics and Alltronics. National may have do samples....
Mike DeMetz
mddemetz
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Aug 6, 2007
12:18 pm
22283
Will this work: http://www.allelectronics.com/cgi-bin/item/BUZ71A/search/N-CHANNEL_POWER_MOSFET,_T0220_.html Thanks ... -- Ian [Non-text portions of this...
Ian Cinnamon
penguin.rock...
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Aug 6, 2007
9:30 pm
22284
Hello I am using a RF Transmitter/Receiver pair from here: http://www.sparkfun.com/commerce/product_info.php?products_id=7813 I wrote this code in the BX24 to...
Conrad A*****
mixman1982
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Aug 8, 2007
5:25 pm
22285
FWIW: Your code look good to me. Try changing your transmitter voltage to 5volts. When you run it at 12volts, then the 5volt input may not be high enough to...
T Larson
highwayman_3...
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Aug 9, 2007
10:50 pm
22286
It looks like the ADIS16251 is available today. The packaging is a 20 terminal stacked LGA type (see link). Does anyone know where I can find a socket for it?...
alex_salvi
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Aug 10, 2007
2:03 pm
22287
I am trying to see if I can read the Sony PS2 Controller with the BX- 01, but need to figure out the right way to replace shiftIn and shiftOut. I am working...
money.dollars
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Aug 10, 2007
3:08 pm
22288
I have been using the BXDS w/BX-01 alone, but I have the RAM sandwich and LCD. I haven't used them yet, because it seems like I will lose the use of many of...
money.dollars
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Aug 10, 2007
3:11 pm
Messages 22257 - 22288 of 23222   Oldest  |  < Older  |  Newer >  |  Newest
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