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ADC conversion to real values. Which is the most accurate method, midpoint or "edge"
One way to increase precision when there is a large ADC step size is to dither the input signal with zero-mean noise and then average that noise away.  That removes the...
Saturday, 8 August 2015 - 16:14
difference between ISR and a function/subroutine.
Another consideration is maximum stack usage, which for the regular program is the maximum of the sum of usages in each subroutine call chain.  If an interrupt can occur at...
Friday, 7 August 2015 - 13:18
Problem with clock accuracy.
Not enough code is shown: where is tick_acc modified?
Friday, 7 August 2015 - 13:02
Antenna for light...
Just saw this article about the opposite idea, upconverting low frequency light into a higher frequency to increase photovoltaic efficiency.   The material absorbs two...
Wednesday, 29 July 2015 - 12:26
Is precision timing possible on an ATTiny?
Bear in mind the long term phase can cross through zero on occasion, even if there are wide swings of the short term accuracy (daily and seasonal temperature change, for example).
Wednesday, 29 July 2015 - 12:07
Antenna for light...
You could absorb the light on a black surface, which would heat up and radiate the energy at a lower frequency.  An insulated plate would be 100% efficient in terms of energy...
Monday, 27 July 2015 - 23:14
Code Efficiency
Debug printfs are great during development but there is usually not any way of seeing them after deployment. Most people define a PRINTD macro so as not to obfuscate the code, if...
Saturday, 25 July 2015 - 23:31
Powering an Atmega 168 with a solar panel
If you can run at 3.3 volts then you need nothing more than a LiFePo4 cell across the solar panel, with an FET-resistor shunt that activates at that voltage.  Although full...
Wednesday, 8 July 2015 - 17:54
wireshark sniffer
Wireshark dissectors aren't that hard to figure out, check which field it is using:   https://code.wireshark.org/revie...   I know nothing about this protocol but...
Friday, 3 July 2015 - 00:57
Floating Oscilloscope Measurements
Many potential problems (he he) are avoided by powering with a battery, easy to do on 5 volt powered scopes like the xprotolab.   It's always a good idea to put it in a box...
Monday, 29 June 2015 - 12:17
High Voltage Programming to Correct Wrong Fuse by AVR DRAGON is Unsuccessful
Just to be clear, unless you can read the device signature there is no point in trying to read anything else. The OP had something wrong with the SPI setup, read the signature as...
Friday, 26 June 2015 - 20:31
silly question about rs232 port
The standard RS232 high speed baud rates are 57600*2n e.g. 115200 230400 460800 921600. http://electronics.stackexchange...   Most motherboards can do these rates although...
Friday, 26 June 2015 - 16:07

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