16h
comment USB Busy when transmiting data
It sounds like the interrupts coming from the hardware are not set up correctly, you shouldn't be clearing it yourself.
1d
comment How does adding two Resistors in Series contribute to the sum of its resistances
Voltage doesn't "flow", current does.
2d
comment EDGE/GPRS connectivity vs SMS connectivity through 2G GSM
TCP/IP requires multiple packets to get through, whereas I believe the SMS handshake is simpler. But plenty of networks are unreliable and slow about delivering SMS.
2d
comment Sensor to know approximate speed on vehicle
Magnet on the wheel + Hall effect sensor is a combination commonly used by bicycle speedometers.
Nov
24
comment Could a barcode scanner be used to get surface depth information?
This is a good idea; it's known as "structured light". Line-lasers are available embedded in cheap laser spirit levels.
Nov
24
revised Is electronic an exact science?
added 230 characters in body
Nov
24
answered Is electronic an exact science?
Nov
24
comment Detect when device pointing at object
IR laser. Accurate but not visible.
Nov
24
answered FPGA based theremin , is possible?
Nov
23
comment (Solved) Clock code does not oscillate
It requires a clock input and won't oscillate on its own.
Nov
23
comment Simple output stage for a voltage output audio DAC
For driving speakers, there are various single-chip class D amplifiers (e.g. TPA series) that work quite nicely. If you want it for something else this won't be suitable.
Nov
22
comment How to identify the type of a microcontroller?
Note that microcontrollers ship entirely blank - NO firmware - and the software you write for them is called firmware. This seems to be part of the confusion.
Nov
22
comment How to identify the type of a microcontroller?
Right. That particular demand (know what it is) is basically impossible, although precise timing measurement will enable you to spot it running faster. However microcontrollers can have read protection on the firmware as a very effective anti reverse engineering method.
Nov
22
comment How to identify the type of a microcontroller?
Other way round: you can't run software on the device without already knowing what architecture it is and building the software appropriately.
Nov
22
comment How to identify the type of a microcontroller?
Root access is meaningless on microcontrollers. Realistically either it identifies itself (some equivalent of user-agent in your protocol) or you look at the label.
Nov
20
comment How does a ps2 mouse send data to a computer?
If you can get hold of a PS/2 mouse or a serial mouse it would be much easier.
Nov
20
comment Why not use audio codec chip as measurement ADC/DAC?
Bandwidth limitations? Input impedance? DC accuracy & linearity? These may be fine for your project, but also worth checking in the datasheets.
Nov
20
comment Is it possible for the Server that can call GSM/GPRS modules on demand basis
"Mobile-terminated data calls" are possible, or you could use an SMS as a notification.
Nov
18
comment How does USB superspeed electrical signaling work?
USB 1/2 is I believe terminated with a resistor network that biases it to ground. There must be termination resistors somewhere not shown.
Nov
18
comment Powering a Digital Alarm Clock with AC
It's quite a clever circuit, but the designer really ought to have specified what voltage should be applied!
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