Slot Machine Code Javascript

Html5 Slot Machine
Slot Machine Code Javascript Programming
Slot Machine Code Javascript W3schools

Recently one of our blog readers raised this question that there are some errors when buying a used slot machine. Though his query was related to his IGT Double Diamond model 96435800 reel slot machine which he had bought but here we are catering to some of the most common errors buyers face when they buy a real slot machine specially a refurbished ones. You can try to fix these errors by doing the following actions as given against each error. Also there are many superb videos online that teach you how to fix these errors.

Hello everyone, lately I've been trying to code my own slot machine in Javascript and HTML5(the canvas element specifically). TO do so I decided to take a look at the very best online slot machines source codes, but those are huge, namely most of them are at least 20k lines of code in a single js file and it's really hard to figure out how did they animate the reels etc.

EEPROM Device Error

EEPROM (electrically erasable programmable read-only memory) is user-modifiable read-only memory (ROM) that can be erased and reprogrammed (written to) repeatedly through the application of higher than normal electrical voltage. Unlike EPROM chips, EEPROMs do not need to be removed from the computer to be modified. However, an EEPROM chip has to be erased and reprogrammed in its entirety, not selectively. It also has a limited life – that is, the number of times it can be reprogrammed is limited to tens or hundreds of thousands of times. In an EEPROM that is frequently reprogrammed while the computer is in use, the life of the EEPROM can be an important design consideration.

A special form of EEPROM is flash memory, which uses normal PC voltages for erasure and reprogramming.

Here is the video how to fix this error

Error on door of slot machine

Many times when the display on the door indicates an error condition, open and close the door to reset the game and clear the error. Open the main door which clears the current game information and a “0” appears in the Coins Played window. Closing the door resets the game and the reels will spin and stop in their last valid position. The error code should clear and the digital display returns to normal game play.

Error Code 12 Battery Voltage

To fix this error turn power off and then turn power on if the battery voltage has dropped below 2.9 V. Also replace ASAP due to possible RAM (Memory) corruption. Open / close door to clear and also Replace 3.6 V Lithium battery on CPU board.

Coin Errors

For coin errors see that comparitor is seated in all four acceptor clips and that acceptor does not have coin(s) jammed or the coin optics below comparitor is not blocked You can ensure toggle power switch is in activated position if installed.

Coin Out Tilt Hopper

Check for and clear any jammed coins in the coin out channel. Also see that the coins are not jammed behind hopper knife or see that the coin out optic sensor is not blocked by dust. If so you can replace hopper coin out optic.

Error in Extra Coin Out Hopper

To fix this see that the hopper motor brake functions properly. Check the coin wiper/ knife for jams and if so adjust them if necessary.

Hopper Empty Error

This is the most common error that new slot machine owners will have because the cash out button was pushed and the number of coins in the hopper is less than the total credits to be paid out. You can open the main door and check the hopper for coin level (your hopper will not dispense all of the coins), refill and close the main door. You may have to do this several times for all of the credits to be paid out.

Reel Tilt Errors

You will find that there are reel tilt errors and for this see that whether the designated reel is misaligned or malfunctioning. Also check if the reel is not unplugged. You can switch connectors from one reel to another, determine if error follows change of connectors. Try replacing reel assembly or optics if error stays with bad reel. Also clear Ram and see if it works again.

Error Codes and Fixes

During the process of clearing error codes, you may encounter multiple 6x series errors. Here are few common ones and their fixes

CMOS RAM Error

This means Bad (or cleared) CMOS RAM data You can Press test button 3 seconds Error code 61-1 should now be displayed. Now close door, turn and release reset key once. Same for game data reset.

Bad Game EPROM or Data EPROM Error

Check circuit board and replace Game EPROM. For Data EPROM error check circuit board and replace Reel EPROM

Bad EPROM Device or Bad EPROM Data or Game Type Mismatch

Press self test switch for 3 seconds If error will not clear replace EPROM Also if the processor could not read or write to the named chip Press test button for 3 seconds Error code clears from display.

Most of the errors can be resolved with little help but many need technical knowledge. Remember that if you are on a warranty or not the place or online site where you purchased a used slot machine is there to assist you with trouble shooting and repairs. They can guide you over the phone or send some mechanical and technical person to do so.

This is a slot machine that resembles the real slot machines in the casinos. To create the project, you need to insert three image boxes into the form and program them so that they will display a set of three different pictures randomly when the user presses on the spin button. It involves a randomization process. Next, a timer needs to be incorporated into the procedures so that the program can produce animated effects. In addition, you can also insert the Microsoft Multimedia Control so that it can play sounds in synchronization with the spinning of the slot machine as well as when the player hits the jackpot. You can design any interface you like. We have created an interface as shown below:

The Interface

The Video Demo

Html5 Slot Machine

The Code for Spin Sub Procedure

The three random variables a, b and c will be randomly assigned the values 1, 2 and 3 using the RND function. Based on these three random numbers, three different pictures will be loaded into the three image boxes randomly using the LoadPicture method. Animated effects are created by putting the above procedure under the control of Timer1, which will call the spin procedure after every interval until it fulfills a certain condition. Sounds are also added using the Microsoft Multimedia Control to make the game more realistic and interesting. The amount won is controlled by the If...Then...End If statements

It is important that you define the correct path for the LoadPicture method, otherwise the program will not be able to run. For example, our path is C:VB programImagesgrape.gif, you need to create the necessary folders and have the necessary image file if you wish to copy the program directly. If you place the image file in a differently folder, you need to modify the path accordingly. For example, if your image file is in D:VB programImagesgrape.gif, then you need to modify the LoadPicture method to LoadPicture('D:VB programImagesgrape.gif').

If you wish to use our image files, you can download from the links below:

sound and the other for the jackpot sound. Below is the video demo of the slot machine simulator.