Often i have to replace clearly identifiable strings (strings, text) with a new string in a MySQL column. Either its possible to use php, read the DB content and use str_replace() for string replacement, there is a much better way:
Thank God, MySQL offers a native REPLACE() function therefore:
The power board Sparkfun “MotoMonster” drives the two motors (12V 47A = 575W) according to the instructions of the Arduino (5V 5mA = 25 mW).
For simplicity, the motor driver board is equivalent to 4 relays:
driving the right motor forward this means mounting the right side,
driving the right motor in the other direction this means lowering the right side,
driving the left motor forward this means mounting the left side,
driving the left motor in the other direction this means lowering the left side,
An arduino program (C language)
This program interprets the data sent via serial port by SimTools and sends it to the motor control board.
It performs a feedback control by reading the values of the potentiometer coupled to the motors :
-> The actual position is compared to the setpoint, and this will create a new updated order sent to the MotoMonster card.
This feedback loop is performed every 80 ms.
12V power supply and DC motors
A heavy 12V Power Supply Unit about 30A. Electric Motors
2 Truck Wiper Motors for actuating the movable platform, with their positioning potentiometer (for feedback).
Structure in rectangular steel tube:
– the frame
the frame rests on the ground and supports the movable platform via a motor drive shaft (U joint).
– the moving part: the “cockpit”
– A true racing bucket seat (tubular). The fiber seats are lighter but more expensive.
– A harness! important to feel the seat movements and for realism of immersion
– Force Feedback steering wheel and pedals
Here are the quotations to give you an idea :
The step-by-step pictures:
It was very convenient to have the bucket seat’s mounting plate: I drilled the structure easily!
Power Drill and a conical tool to adjust the hole to good diameter
Take care to ensure the shaft ‘s squareness : it has to be vertical !
Then I crossed the bars at 45 ° to triangulate my frame :
The gimbal (U joint) is blocked in rotation along the yaw axis.
The first location block specifies the url rewriting process. The second location part prevents external access to the internal XenForo related data structures. Thats for security purposes of the forum installation.
If you forum is located within a subfolder like e.g. domain.com/forum or domain.com/community just add the name of the subfolder to the location parts:
When i started the creating process of this theme i considered to integrate one of the popular WordPress plugins for pagination. I than decided to publish the XSimulator theme for free and i felt that it could lead to any problems and issues for someone else to make a similar looking theme when the requirements are a lot of different plugins he must install first. Fortunately i found a great programmed script which is very easy to implement and powerful.
Open your functions.php and create a new function: