Questions tagged [driver]
A chip or a circuit that sends a signal with more current or voltage, or over longer distances.
935
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How should I setup the PIC's LCDREF register?
I am using PIC16F1946. It has a LCD driver module in it. I read the datasheet and it mentions LCDREF register (Section 27-3 in the datasheet). I cannot find useful info on how to set it up?
Could ...
- 263
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1
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Driving 12V halogen lamps (downlights)
12V halogen lamps, do they need any special driving?
I have seen on some transformers that they output Half-wave rectification to the 12V halogen lamps. Is this how they should be driven or can ...
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Galvanic separation between a microcontroller and a motor driver
Is it possible to achieve galvanic separation between a microcontroller and this driver . It's a dual full bridge driver and I'm going to parallel it's outputs (consequently the inputs and the sense ...
- 10.6k
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When to NOT use Totem Pole Drivers?
When is it inappropriate to use a totem pole driver while designing a circuit?
Ie. Never use totem pole drivers when...
or
Totem pole drivers are never used for...
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Laser driver circuit
I like to build a laser pointer driver circuit that I can drive from an 8 bit uC. However, I like to get light output fairly constant. This requires for me to look at the photo detector (these lasers ...
- 2,812
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Porting Linux Drivers to RTOS
Everybody is probably going the other direction, moving their systems etc. to linux. I have the following problem. I like to use a WiFi chipset along with its Linux driver on my RTOS (FreeRtos). If I ...
- 2,812
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2
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Totem Pole Output Driver
I was wondering if someone could explain what a totem-pole output driver is?
I have seen the term mentioned in connection to the inner circuitry of an AND gate (consisting of transistors) and in ...
- 1,667
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1
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Stacking stepper motor drivers
Is it possible to increase the amount of current available to a stepper motor using 2 or more of the same drivers in parallel?
I want to drive a 3A stepper but I can't seem to find any reasonable 3A+ ...
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Replacement for the MC14495-P1
I need to find a device I can use in place of the MC14495-P1 binary to hexadecimal LED driver. This part is sadly very scarce and very expensive these days.
The device is a 16 pin DIP with +5V on ...
- 55.9k
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Need advice on microcontroller to switch relay on/off
I am trying to connect an OMRON G2RL-2A DPST 12 VDC relay (G2RL relay datasheet) to my PICAXE 20x2 microcontroller. I also have a ULN2803A relay driver (ULN2803A datasheet).
I managed to get the ...
- 3,234
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What is the difference between L293D and L293NE?
I tried to find a L293D motor driver but I was able to find only the L293NE. What is the difference (even google could not tell me)?
ScReYm0
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Datasheet doesn't include pinout info?
I am trying to connect arduino and usb lancard
In the datasheet, there is USB transceiver interface, containing symbol, type, pin number, description (usb D+ or D- signal).
However, the datasheet (...
- 417
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1
answer
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With the case of stepper motors, what correlates to the max RPM of the individual unit?
I'm looking at a few different stepper motors for an engineering project I'm working on, and I'm attempting to tease out any correlations that a stepper motor's stats would have with its maximum speed....
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Suppression diode for relays in ULN2803A
I want to make a simple 8 chanel relay multiplexer. My choice for driver IC at the moment is ULN2803A and for relays it is a 12v DC DPST relay.
I read in ULN2803A datasheet that it contains ...
- 3,234
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5
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PWM & output voltage
while 555 contest is long gone, I am still debugging my device, where I already abandoned 555 itself :-)
At the moment, I am driving PC fan from an PWM (30kHz) signal from atmel uC.
I am powering P-...
- 3,237
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Looking for a quad low side power driver IC
We have been using the Allegro UDQ2559LB. This is a quad (4 channel) low side power driver (used to drive relay and lamp loads) with about 0.5 amp per channel capability and overload, short circuit, ...
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Motor drivers and kickback diodes
I am considering buying one of the hbridge drivers referenced in the below tutorial, but when I looked at the comments underneath the second hbridges sparkfun page, kickback diodes were referenced and ...
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Help wanted with vacuum fluorescent display (VFD)
In a box with old components I found a 16 character, 19-segment Futaba VFD:
I would like to use it for "something" but I haven't the foggiest how to drive such a display. Even the filament ...
- 145k
3
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2
answers
591
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Pic-PC (Crossplatform) USB interfacing without writing custom drivers
I'm planning to use a PIC for a MIDI pedal that can be configured from a PC (through USB). Is there a way to do crossplatform (at least mac/windows, better if also linux) USB in userland (or another ...
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Are there resources for learning to write drivers?
I have a decent amount of experience designing hardware and embedded systems in general, but I have never written a driver for an operating system.
I would like to know if there are any good guides, ...
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Motor driver using only a 2N2222 transistor?
Is it possible to build a motor driver using only a 2N2222 transistor?
If yes, then how?
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Can I replace this circuit with an IC?
I moved my Arduino-logic-level-5V-to-12V-LED strip circuit off project board and onto Veroboard and I'm very proud to say everything worked first time:
(I'm not at all proud of the soldering job, so ...
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L298 Motor Driver spinning motor only one way :/
i just made a motor driver circuit on a veroboard to use with my arduino
but the problem is l298 spinning motor only one way.
here is the code
it was supposed to spin motor forth and backwards every 2 ...
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Unipolar and Bipolar Stepper motors
I would like to universal stepper motor driver circuit. Is it possible for one circuit to be able to drive unipolar and bipolar motors with only a firmware change or do they require much different ...
- 3,695
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What's a good substitute for the TD62783AFNG?
According to its datasheet, the TD62783AFNG is an 8-channel high-voltage high source-current driver. It is a Darlington arrangement that can source (not sink) up to half an amp through a pin. What ...
- 5,586
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Problems driving leds with the MM5450
First what is my final goal: to drive 24 RGB LEDS using a microcontroller connected serially to a Micrel MM5450 LED driver. It would be nice to be able to drive all of them individually (72 LEDs), but ...
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What is the purpose of "MOSFET driver" ICs
There are dedicated "MOSFET driver" ICs available (ICL7667, Max622/626, TD340, IXD*404.)
Some also control IGBTs.
What is the practical purpose of these? Is it all about maximizing the ...
5
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4
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How does the Linistepper, open source linear Stepper Motor Drive work?
I have been trying to get the Linistepper to work, however I can't seem the understand the working of the circuit.
The circuit is here.
The issues that I'm unclear about are:
What are the ...
- 1,971
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Is it possible to drive a stepper motor greater than 1000 rpm?
How could I achieve this?
What are the stepper motor facts
and principless that I have to
keep in mind to design a circuit
to achive this goal?
Are there any readymade/open source
alternatives and ...
- 1,971
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2
answers
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How to test if it is a non-multiplexed (static) LCD?
I got some static LCD's from an old cheap clock, calculator and the like and now I would like to use them for displaying simple things like temperature. They are connected with those pink with grey ...
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BLDC and three phase inverter
I want to run/control a BLDC motor from a DVD/CD-rom player and found a schematic how to do this, the so called three phase inverter (see right schematic on this page: http://en.wikipedia.org/wiki/...
- 339
9
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Best way to control 75 LEDs with Arduino
I need to control 25 groups of 3 LEDs or 25 RGB LEDs. Each group will be dismissed from the uC by up to 20 cm (about 8 inches). 20 cm is very safe assumption but I think it will be 10 cm or less.
...
- 810
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Current source for CREE XLamp XP-G
Looking to play around with the CREE Xlamp series LED and was wondering what would I need to drive them off 110V household power?
Output current needs to be in the range of 800-900mA.
EDIT: I am ...
- 1,933
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How to drive brushless motor with Arduino?
Is it possible to drive a brushless motor directly with Arduino? Or should I revert on controlling a brushless motor ESC with PWM pulses?
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