Published in issue , December Order from ElektorPCB, bare, April 16, PUBLISHED. in Elektor magazine | December | Find it here. If your OBD2-Analyser NG is equipped with the optional Bluetooth module published in the April issue of the Elektor magazine, you even. Elektor at the core is a cheerful conglo- brought to you by Circuit Cellar, Elektor April AUS$ – NZ$ – SAR £
|Published (Last):||5 July 2012|
|PDF File Size:||9.82 Mb|
|ePub File Size:||5.22 Mb|
|Price:||Free* [*Free Regsitration Required]|
That allows to display 8 menu lines at once. Published in issueDecember The LED should go dark after 5 seconds. Therefore, HHEmu is subject to the same restrictions.
Free Elektor magazine April 2010
Check the updates for details and more features. Opamp U7d is wired as a comparator and triggers an interrupt in zvril ATmega microcontroller via pin PB1 when the supply line temperature rises. If you fit the board in the 20010 so the LED and the trimpots are visible or accessible through openings in the front, there will be enough room at the rear for the sensor cables.
This elektod you can see exactly which function is involved if a problem arises. Use the PC software to calibrate the temperature sensors. Free online library on electronics.
Measuring principle Here we used a different method to determine the flow velocity. The author wrote the software for the ATmegaAU boot loader and application program in C, and the source text can also be downloaded.
When you relocate, the system can be removed without leaving any traces behind. Link to download the archive of Elektor Electronics magazine: See the command summary in chapter 2. The temperature signals from the sensors on the return line are correlated in the same manner, and ideally the time offsets obtained for the supply and return lines should be the same.
The firmware update to version 1. The next task is to load the boot loader software into the microcontroller via the ISP port. Reprogramming a few fuses is necessary to enable the boot loader to work properly, but first you should study the microcontroller data sheet carefully. TV Elektor Ethics Back to top.
To do that, type “1e1u” or “1e2u” while the HHEmu window is active.
Pololu – Free Elektor magazine July/August
The area under the curve of the difference signal is a measure of the time offset of the temperature variations. This is followed by a simple low-pass filter formed by R36 and C20, which filters out induced AC hum. That is much more than you would see in a real vehicle that just supports a subset of all OBD2 features. Since HHEmu version 2. We make use of the fact that the supply and return temperatures always vary by at least one to two degrees due to the operation of the control system.
Simple recipes Farm tools and mechanisms For lovers of travel.
It also has a built-in control function for the circulation pump, which helps you reduce your environmental impact and keep your bank balance healthy. The reference voltage for the sixth sensor, which is attached to the cold domestic water line cold-cold, CCis somewhat lower and is buffered by U5a. The TL used here is a rail-to-rail opamp, so the output voltage can assume almost any value elektod the supply voltage range.
After the sensors have been connected to the board, the initial temperature curves as yet uncalibrated should appear in the PC program. Alignment and calibration The first task is to adjust the three trimpots that set the voltage thresholds for interrupt trigging.
U5b acts as an impedance wlektor to minimise the load on the voltage divider. U4a naturally needs a reference voltage on its inverting input. If pairs of temperature sensors separated by a few metres are mounted on the supply and return lines, the flow velocity can be determined from the time offset of the variations measured by the two sensors.
If the Verify and Write buttons are not active after you press the Bootload button on the Maintenance tab, swap the two lines of the RS bus. Up to now the author has always had good results with programming the fuses individually and in sequence. Set the Bluetooth adapter to always visible.
In that case you can view more data items or menu items at once, since the test software’s display height is 64 simulated pixels instead of the 32 pixels of the original LCD. Naturally, the corresponding driver must also be installed on the PC before you can use the adapter.
R47 is necessary to stabilise U4a with a capacitive load. It can be used as stand-alone DXM-simulator. Security and alarm systems Car. All free magazines that can be downloaded: This is provided by the combination of R20, R26 and R Warning for HHEmu prior V2.
Faites parler vos alimentations
Free online library on electronics Elektor Electronics magazine. Speedometers and tachometers Chargers, accumulators, galvanic cells Citizens’ Band radio Clocks, timers, relays, load commutators Computer devices Computer interfaces Computer moding Computers Computers.
The avdil for supply temperature S forms a voltage divider with resistor R Free online library on electronics How to download files? Their resistance varies by around 0.
Download archive of Elektor Electronics magazine free
Elketor you need in order to determine how much heat your system delivers is four temperature sensors, a bit of wiring, and a microcontroller. That is much more than you would see in a real vehicle. The LED is lit constantly when an interrupt pin is active; otherwise it blinks or is dark.
Then rotate the trimpot back in the other direction until the LED starts blinking or goes dark.
The power Pwhich is amount of energy transferred per unit time, is:.