Advice 1: How to make an electronic speedometer

Speedometer – a device used to measure the speed of movement of the vehicle. Set can purchase a speedometer and a device made with your own hands.
How to make an electronic speedometer
You will need
  • - personal computer with Internet access;
  • details;
  • - soldering iron;
  • Plata;
  • tester;
  • - speed sensor;
  • compiler.
Instruction
1
Independently develop, or download in Internet the scheme of constructing the electronic speedometer. By the way, the second method is more convenient because they do not need to sit over a mountain of literature and to seek out the necessary information to map the electronic speedometer.
2
Acquire the necessary to create electronic speedometer details. Depending on the complexity of the scheme you may need the following components: photodiode, transistors, display, resonator, capacitors, voltage regulators, relays and other parts. To acquire all this at an electronics store or on the radio.
3
Assemble a circuit of the electronic speedometer. After the soldering process is completed, with a tester check the connection quality of all soldered parts.
4
Purchase the speed sensor and install the controller on the wheel of the motor vehicle. But first calculate the number of pulses per kilometer: for this measure the wheel circumference (one turn – one pulse sensor). Based on these data, calculate the device parameter.
5
Using a special compiler to run the microcontroller firmware. Immediately test the electronic speedometer, and only after that connect the device to your motor vehicle.
6
Assemble electronic speedometer and practice its performance. If you find problems in the operation of the device, reprogram the microcontroller or change his scheme.
Note
Pay attention to the quality of the connection components of the electronic speedometer!
Useful advice
Usually on sites where you can find a diagram of the electronic speedometer, provides detailed recommendations for the Assembly of this device.

Advice 2: How to install speedometer on the bike

Modern electronic speedometers for bicycles to shows not only the current but also the maximum and average speed for all travel time, average speed, time, distance, and more. Such a speedometer is a useful acquisition, which can be conveniently mounted on a Bicycle.
How to install speedometer on the bike
You will need
  • Speedometer, AA battery
Instruction
1
Install speedometer gauge (included must be the special rubber bands or clamps). You may need to flip the bike and remove the front wheel.
2
Attach the magnet of a speedometer on a Bicycle spoke. It is important that the distance from sensor to magnet was about 1 cm and during rotation of the wheel they were on the same level. It does not matter at what distance the magnet is from the axis.
3
If the speedometer is wired, the wire should immediately peatnut to the future site of attachment of the speedometer and check to see if the wire rubs on the tyre, not whether in the spokes.
4
To attach the stand to the speedometer on the handlebar.
5
Fixing the speedometer on the stand, spin the wheels to check the performance.
Note
The most easy to use and easy speedometers are made of plastic. They have buttons and a monochrome display.
Useful advice
Enter in memory of the speedometer wheel size of your bike below the speedo showed accurate data.

Advice 3: How to make a PREROLL to the speedometer

PREROLL speedometer is a procedure that allows you to increase the odometer. She has many other titles: Twister, winding, winder. Initially with the winding mechanism was tested the efficiency of the odometer, and in some situations, and speedometer. Now often it is used to rewind the mileage. It is not illegal, and in some cases it is necessary. To run your retrieve in various ways, but the meaning remains unchanged.
How to make a PREROLL to the speedometer
Instruction
1
PREROLL applied to all speedometers in which the speed sensor is basically a Hall sensor with three pins. Change the phase that goes to the speedometer, and the tachograph, with the phase of the tachometer. For this method you need a working engine, and it's not very profitable. Very high risk of what will happen the failure of the device and even fire.
2
Get an electric a PREROLL, which is quiet and takes up little space. Such podmolik good speed regulation. Connect it to the diagnostic connector of the car. But remember that this method is applicable not on all cars.
3
The simplest electronic winding has three wires, which are mounted in the wiring. Disconnect the wire that goes with the standard speed sensor. Two wires connect to the power supply: the "plus" and "minus", and the third signal to the speedometer. Here the winding is temporary and removable, so the "box" in the wiring do better in an inconspicuous place.
How to make <strong>retrieve</strong> <b>speedometer</b>
4
For continuous use, connect the positive and negative leads of the winding in any convenient place in the car. The remaining two wires connect the break signal wire that connects the speedometer and transmission.
5
This way you will receive disconnect speed sensor when the PREROLL. Now you can fearlessly use your retrieve in all situations: in traffic, in the Parking lot. Conflicts system should not be.
How to make <strong>retrieve</strong> <b>speedometer</b>

Advice 4: How to make firmware

In order for the phone to function, it has special software called "firmware". If you change the firmware of the phone, you can increase the volume of your phone to add a new implementation of the functions that are inherent in the phone. The only thing you will not be able to do is add those functions, which were not included because they do not depend on the firmware, and technical full phone.
How to make firmware
Instruction
1
In order to change the firmware, there are several options. You can reflash the phone using special software and reset all data which are not systemic. For this you will need to dial a special code using your cell phone.
2
If you want to reflash the phone, you will need to connect the phone to PC using special usb wire that is included with the phone. If not, buy it separately. Use the program for updating the firmware and the firmwarethat fit your model of phone. Don't forget to keep the firmwareon your phone before flashing. Instructions for flashing, a program for flashing, and also the very firmware you will easily be able to find on the Internet.
3
If you decide to reset the firmware, contact the manufacturer of your cell phone. Do not use combinations, which you can find on the Internet - in this case, all risk for misuse of the codes are on you. Using code obtained from the manufacturer, reset the firmware and enjoy a fully clean phone.

Advice 5: How to twist the electronic speedometer on WHA

Sometimes there are cases when you need to roll the mileage on the speedometere. This is done in the case when you decide to sell the car. And to make it more attractive to a buyer, you want to reduce some mileage.
How to twist the electronic speedometer on WHA
Instruction
1
To twist the electronic speedometer, grab a screwdriver, wrenches and, if necessary, pliers. To start, remove the speedometer from the dashboard. Unscrew with a screwdriver protective glass, inset with a screwdriver the edge of the speedometer and pull over. Sooner or later he will.
2
Then climb inside the box and Unscrew the speedometer cable. Take a special sleeve, and a motor on 12 volts. Throw the wire on the battery and adjust the polarity so that the speedometer was twisted in the desired direction. If the speedometer is not removed, all of the above steps is carried out with the pit where it is installed.
3
If you yourself are unable to roll the mileage on the speedometer, refer to experienced professionals. Fortunately now the domestic market there are many companies that will help you to reel electronic speedometer. Also there are special sites where you for a small fee, will certainly help. Please contact the shop where you not only twist the speedometer, but will do a full computer diagnosis on your car. After all, if you are going to sell it, every mechanism and part of a machine needs to be in order. And retrieve electronic speedometers will help you to sell the car as profitable.
4
Modern speedometers in cars VAZ are divided into mechanical and electronic. With the twist of a mechanical speedometer you should have no problems. Everything is simple: simply wind the rope in the desired direction. Twist the electronic speedometer is a much more intellectual and labour-intensive activity, where knowledge of the fundamentals of electrical engineering you will not be able to fulfill all our plans.
Useful advice
Remember that before driving, you must obtain a driver's license. Arrange courses where you get acquainted with the rules of the road and learn to drive a car.
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