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This schematic is provided with the intention of being useful, but it comes without any warranty, including implied warranties of merchantability or fitness for a particular purpose. The address bus in this schematic is connected in a unique manner,...
The Spartan-3 board features a traffic light controller utilizing FPGA I/O pins. The traffic light controller card consists of 12 point LEDs arranged in 4 lanes. Each lane is equipped with three LEDs: Go (Green), Listen (Yellow), and Stop...
According to the datasheet, the respective color wire has been connected to the corresponding pin of the L293D as illustrated in the circuit diagram. The L293D is a quadruple high-current half-H driver, typically used for controlling the direction and speed...
This is a universal four-digit keypad-operated switch with a unique feature. Instead of entering the security code one digit at a time, all four keypad buttons must be pressed simultaneously. This means the four numbers must be entered in...
A newer version of this circuit board is available. Rev 4 includes a faster CPU, more memory, more I/O, and an optional LCD. It is recommended to use Rev 4 for new projects. Although the older board is no...
The prototype of Keypad Switch No. 2 was constructed using only the stripboard layout as a reference. If the layout has been accurately reproduced, a functional circuit will result. Once the layout is confirmed to be correct and a...
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