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 £
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This costs electricity to power the pump, and energy is also lost through the pipe walls. By contrast, three-way valves between the two sensor locations are not a problem as long as they are closed while measurements are being made.
Under certain conditions, controlling the circulation pump can save you a lot of money and significantly reduce CO 2 emissions.
Since HHEmu version 2. Since the browser can be run on a different machine than the application, you can remotely control the OBD2 Analyser NG via the internet, then. Despite your elektog efforts to economise on heating, they list tidy sums for electricity or gas consumption. Flow transducers are available for measuring the flow velocity, but installing a flow transducer always requires drilling a hole in a pipe or opening up the piping to insert a fitting.
Therefore, HHEmu is subject to the same restrictions. The advantages of the RS bus system are its robustness and immunity to interference. The LED should go dark after 5 seconds. This difference signal is also logged as a function of time.
Firmware Update and Emulator for OBD2-Analyser NG / Wireless OBD2 – Elektor LABS | Elektor Magazine
Electronic fuel injection Car. The time delay between the signals from a pair of sensors is determined by a correlation algorithm in the signal processing software, which shifts the signal waveforms from the two e,ektor line sensors relative to each other until they virtually overlap. Naturally, the corresponding driver must also be installed on the PC before you can use the adapter. Alternative energy sources Antenna amplifiers Antennas Antennas.
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.
Heating System Monitor (090328)
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.
All free magazines that can be downloaded: Car electric circuits Car.
Usually you can tell how much energy your heating system has consumed by checking your utilities bill, but what if you want to know how much heat it actually delivered? Possible codes are 10, 11, 12, 21, 22, 78 value is interpreted as hex. HHEmu is a multi-threaded application with threads. U5b acts as an impedance converter to minimise avrio load on the voltage divider. U6a and Elktor are also wired as comparators for signals from the temperature sensors for hot and cold domestic water.
As the water flows through the pipe with a speed of only a few metres per second, the temperature at sensor position S2 rises somewhat later than the temperature at sensor position S, which is closer to the boiler.
The best technique for soldering the leads of the sensor cables is to clamp the cable somewhere and use tweezers to position the pre-tinned ends of the leads. Next connect a RS adapter to the two middle pins of four-way connector P Then rotate the trimpot back in the other direction until the LED starts blinking or goes dark.
Free Elektor magazine July/August 2010
Currently, the software runs on PC and Raspberry Pi. Hot water please If the heating system is also used elektorr supply hot water for domestic use, additional pipes are used for this purpose. All you need in order to determine how much heat your system delivers is four temperature sensors, a bit of wiring, and a microcontroller. Both need additional shared libraries to run.
If you wish, you can solder the leads to the back of the board when you fit the board in the enclosure later on.
PC connection The circuit does not have its own display unit, but instead delivers its readings to a PC via an RS bus. The next task is to load the boot loader software into the microcontroller via the ISP port.
It is important to ensure that there are no active branches between sensors S and S2 on the supply line or between sensors R and R2 on the return line. Their resistance varies by around 0.
Pololu – Free Elektor magazine July/August
The power Pwhich is amount of energy transferred per unit time, is:. Speedometers and tachometers Chargers, accumulators, galvanic cells Citizens’ Band radio Clocks, timers, relays, load commutators Computer devices Computer interfaces Computer moding Computers Computers.
Service 0x07 helps you to see coming problems earlier. The maximum output level of the inexpensive LM opamps is always approximately 1. This is also beneficial in terms of EMC because the clock is stopped in this mode.
Jumper JP3 must be fitted if the circuit is connected to the end of the RS bus. 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.
How to download files? Reprogramming a few fuses is necessary to enable the boot loader to work properly, but first you should study the microcontroller data sheet carefully. To increase elektlr sensitivity of the system, the return line sensor signals are applied to the inputs of a differential amplifier, and the resulting difference signal is amplified. Security and alarm systems Car. Qvril the Rubik’s Cube Did you know? The LED is lit constantly when an interrupt pin is active; otherwise it blinks or is dark.
It starts at the temperature sensors connected to the circuit board, which are NTC silicon devices. Firmware Compared to the original firmware v1. Heating bills often present unpleasant surprises. That depends on the availability of some DXM commands that are undocumented in the official DXM documentation, but are used by the latest official firmware v1.
When you relocate, the system can be removed without leaving any traces behind.