Circuit to generate a signal a specific time after a trigger event. The timing can be defined by an RC time constant, or by clock pulses from an oscillator.
-5
votes
2answers
70 views
How does the 555 timer IC circuit work?
As a beginner to electronics I'm having a tough time understanding circuits that have a combination of different components, including the following timer circuit. Its based around a LM555 timer IC. I ...
6
votes
1answer
151 views
AVR timer speedup on ATmega328
When running at clock prescaler of 64 on ATmega328, one of my timers speeds up for unknown reasons at a particular time in the execution.
I am using two timers on ATmega328 to generate the clocking ...
1
vote
1answer
80 views
Using capacitor to maintain current flow past opening of switch
This circuit turns on the motor when something blocks the beam from the LED to the phototransistor. I want the motor to remain on for 5 seconds after the beam stops being blocked (i.e. from when the ...
1
vote
0answers
202 views
Using a diode or resistor, to supply minimal voltage to LED Driver (Help!)
I'm using a dual 60W LED multi-chip pendant lighting (a.k.a. "high bay" pendant light with two 60W LED chips). This light is using an RGB driver (one per multi-chip) that has a remote control to ...
1
vote
0answers
909 views
Using MSP430G2452 Timer + ADC
I'm trying to build a simple guitar tuner using MSP430G2452. The guitar's signal will come through its pickups, via an amplifier and 1kHz filter that I built using LM358.
== Some background ...
0
votes
0answers
11 views
Difference between Max Interface Clock and Max Timer Clock?
I am trying to use a timer from STM32F4 with ARM Cortex-M4 chip. I need to get the maximum frequency out of that timer for my ...
0
votes
0answers
124 views
stm32f2xx external clock source for timer
I trying to use a timer with an external clock source on a stm32f207ZE microcontroller.
But it isn't working. Here is my code:
...
0
votes
0answers
471 views
Understanding Timers, Counters and Prescaler Registers on the STM32
So I'm trying to set up a very simple periodic interrupt on my STM32VL-Discovery board using the libopencm3 libraries on linux. I've looked at the documentation and I just want to verify with ...
0
votes
0answers
155 views
Activating timers in beaglebone
I m currently running ubuntu 10.10 on my beaglebone. I have also updated the kernel to the latest version. In my project I have to use timers for timing. Unfortunately in pin mux utility the ...
