jippie

Eindhoven, Netherlands

wirespeed.xs4all.nl/mediawiki

Age: 44

Do you love your Pets as much as I do? Check the Q&A proposal!

I'm into:

  • Linux;
  • Networking;
  • IT Security;
  • Perl;
  • System integration;
  • Arduino;
  • ATtiny & ATmega Microcontrollers;
  • Analog electronics;
19h
comment What will be the value of Vo
Or you run the simulation: 2.391 V when using 1N4001. Didn't check the current though, the result is useless if the current is higher than 1A.
19h
comment Button cells for arduino uno
Arduino is designed to run its own peripherals from the on board regulators. There is very limited room designed in for the load.
1d
answered Arduino Mega's 4 Serial Ports?
1d
comment Interface two Ethernet (10 Base) devices without 4 twisted pairs cable (Common ethernet cable) and 10 Base-T Filter
Why go through the effort of full blown ethernet OSI layers 0 (copper traces, unofficial layer), 1 (PHY, 10Base) and 2 (LLC, MAC), probably 3 (IP) and 4 (TCP) if you just want to connect two devices on a PCB? Each layer listed is an extra abstraction in hard or software and costs resources/money. Why not directly interconnect the SPI interfaces?
1d
reviewed Reject suggested edit on How to make -12V from a +12V supply?
1d
reviewed Approve suggested edit on Resistors used in LM386 amplifier
1d
comment How can some guys discern all parts of a MCU?
zeptobars.ru/en
2d
comment Netduino Interrupts Affected By PWM - Diagnosis of Issue
@ConnorWolf R1/R3 puts the output voltage from the encoder right at 1/2 Vcc at worst, which is the trigger threshold for an AVR. A slight bit of noise wil make the input see an intermittent signal.
2d
comment Netduino Interrupts Affected By PWM - Diagnosis of Issue
And stop bypassing the resistor, you'll kill the microcontroller sooner or later.
2d
comment Netduino Interrupts Affected By PWM - Diagnosis of Issue
Decrease R3/R4. Not sure why you use them anyway. Only R1/R2 are required.
Apr
15
comment Power dissipation
I think you have to add a fair amount of context for this question to be answerable.
Apr
15
comment Connection problem with Arduino Mega 2560 and GSM shield ( official M10)
Does it work when you do directly stack the boards together?
Apr
15
comment How do I use the timers on an Arduino Uno R3?
Do you know how to wire up and detect the sound from the microphone using the Arduino?
Apr
15
comment Netduino Interrupts Affected By PWM - Diagnosis of Issue
Start by adding a 220 ohm series resistor to the LED. You are overloading both the LED and the microcontroller output pin.
Apr
14
comment Netduino Interrupts Affected By PWM - Diagnosis of Issue
You can add a circuit by hitting Ctrl-M while editing the question. A circuit editor will open.
Apr
14
comment Netduino Interrupts Affected By PWM - Diagnosis of Issue
You should add a diagram of how the LED is connected to the controller to your question, it is not 100% clear now. If it is just an LED directly connected to the controller, did you think of the series resistor to limit current? And you must not decouple just the LED, look at the diagram in my answer, you decouple LED + transistor, but that is only possible when using an external driver transistor.
Apr
14
comment Netduino Interrupts Affected By PWM - Diagnosis of Issue
What amount of current does the LED draw and how is it connected to the Netduino? Did you use extra decoupling around the LED driver? Also take a look at this electronics.stackexchange.com/questions/90971/…
Apr
14
comment Does it matter if I shield the antenna wire or the interference source
Depends on quality @Chris
Apr
14
comment heatsink problem
Yes it is correct. Scribble down the answer on your test form so it is easy for the prof to check who asked the question here.
Apr
14
comment heatsink problem
According to the datasheet maximum rated power is 160W (which is under ideal circumstances meaning amongst other things 25C ambient). The answer to your question is: There is no possible solution to design a heatsink for this transistor dissipating 200W.
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