A propeller clock is a unique and visually striking timekeeping device that uses a spinning propeller to display the time. This project involves designing and building a clock that utilizes a small motor and a series of gears to rotate a propeller at a consistent speed. The propeller is marked with numerals or other indicators that allow the observer to read the time as the propeller spins.
The first step in creating a propeller clock is to design the propeller itself. The propeller should be large enough to be easily readable from a distance, and it should be marked with clear and distinct indicators for the hours, minutes, and seconds. The markings should be evenly spaced around the circumference of the propeller, and they should be positioned so that they are easily visible as the propeller spins.
Next, the motor and gears must be selected and assembled. The motor should be powerful enough to rotate the propeller at a consistent speed, but it should not be so powerful as to cause the clock to vibrate or make excessive noise. The gears should be chosen based on the size of the propeller and the desired speed of rotation. The gears should be carefully aligned and secured to ensure that they function smoothly and accurately.
Once the propeller and the mechanical components have been assembled, the clock can be placed in a suitable enclosure. This could be a wooden or metal frame, or it could be a more decorative case made from glass or plastic. The enclosure should be large enough to accommodate the propeller and the mechanical components, and it should be sturdy enough to support the weight of the clock.
Finally, the clock must be tested and calibrated to ensure that it is functioning properly. The propeller should rotate smoothly and consistently, and the markings should be clear and easy to read. Any adjustments or repairs that are needed should be made at this stage to ensure that the clock is accurate and reliable.
Overall, building a propeller clock is a challenging but rewarding project that requires a combination of mechanical skill, attention to detail, and artistic flair. With careful planning and execution, it is possible to create a unique and visually striking timekeeping device that will be a source of pride and enjoyment for years to come.
Propeller Clock Project Report [3no705v72xld]
To solve the RPM problem a regulator was used so as to vary the speed of the motor. The intensity of the IR radiation determines how much current is generated in the photo transistor. Introduction Conventional methods of displaying images or massage to public are using LCD display and dot-matrix LED displays. Note that 5 volts gets to the circuit when 6. Figure 3 shows an IR LED circuit. This would be more cheap and efficient.
The microcontroller will see this as falling edge transition and know right away its back at the home location after 360°. The control board also has a photodiode that detects the infrared light beam on the base on each revolution, which takes approximately 100 milliseconds. Buy the I decided to dust off this old classic project and bring some improvements from what I have learned from the older versions. Circuit Diagram Components list COMPONENT NAME SPECIFICATION QUANTITY Microcontroller AT89S52 1 10k Carbon film Resistor 2 1k Carbon film Resistor 1 10uf Electrolytic Capacitor 1 10k Resistance array SIP 1 220ohm Carbon film Resistor 9 LEDS Red Color 8 Crystal 11. Everytime I am getting different output.
I used for programming Keil Programmer and for burn ic I used Flash Magic loader, for that you can use the mikroC PRO for 8051 for programming and its flash burner also available with its setup file. It will be the coordination of electrical, electronics and some mechanical engineering. On the spinning board, the transformer secondary will pulse at the FSK frequency of the transformer primary and FSK is decoded with a simple slope detector. In this project, our aim is to use 89S52 microprocessor to control a row of LEDs to display some images and function it as a clock. The true reason for motion perception is the phi phenomenon while the true reason for perception of continuous light is Flicker fusion. If there is a more frame rate, it cause to the less flickering of the picture.
The metal case of the motor is connected to ground, and the washer was connected to 5V. All that is needed to set up the original Arduino Nano is to go onto the Arduinio IDE, click "Tools", then click "board" and select "Arduino Nano". This has shown improvements in the blurriness of the words. For building this project, requirement is just a small 20 pin microcontroller, a position encoder, and LEDs. I also learned that the original design had a. This worked but I was not satisfied by the display occassionally wobbling because the flexible wire does not always keep its position after it hits the notch and also this caused a soft clicking sound that was irritating.
That's really all there is to it! DC motors are non-polarized motors. Minimum 500mA and Maximum 1000 mA current supply must provide to Motor to get a proper rotation speed. Load proper value in IE register, so that the interrupts INT0 and T0 are enabled. I have made it PCB layout in Dip Trace PCB designer software. Or it could also be used for some other project as a basic component. The power supply circuit incorporates voltage regulator for microcontroller and connected to the microcontroler in such a way that a metal wire constantly slips over the flywheel like a brush in a motor completing path to transfer the power to the Microcontroller. For the POV display, I decided to modernize a little and use an ATMega328 with the Arduino Uno bootloader and program it using Arduino code.
Human eye is an integrating optical sensor that has about 0. See picture for reference of specific location on PCB board. The shaft from motors like these are about three-quarters of an inch, which is plenty for the entire armature and the connecting piece for the board. I don't have access to Kail and can not open one of your file, so can i request the hex file not formated in intel hex format? However, this was not easy for me to obtain, so I replaced it with a miniature 3V lithium watch battery, which works nicely. IT's depends on which format you have choose, means that your design circuit is active high based or active low based, your name design code depends on it no doubt i can give you but I have all ready post all code designing format for all so you can also design your own name code based on active low or high :.
The best place to solder it is in the corner. I was fortunate to pull this off with this motor, since all other previous motors failed to run smoothly when I was building the original clock. IR LEDs are also used in many commercial products such as a TV remote. The clock displays on two sides, 180 degrees apart. To keep it in place, I used electrical tape.
That pesky transformer switching frequency noise could be made meaningful to send RS232 bits by shifting the frequency around! I find the second option more fruitful as adding a battery over the module can cause in additional weight which can also cause in decrease of speed as the propeller display can provide a sharp image display at high speed. Also, the brushes from the gutted motor was placed on top of the unmodified motor. Display Formation As we have already learned that POV is the basic phenonmemn involved, now to use this we need to get into some details. Instead of a washer on top of the motor with a spring contact, I simply pulled out the armature out of another motor and put it on the shaft of an unmodified motor. So, we used a DC motor with 1200 rpm speed as the prime mover. I used a ball bearing from a VCR head to hold the top end of the motor in place, plus some other parts from cassette tape players. Side View Step 5: Modifications If you look closely at the source code, you'll see that the "dot rate" is adjusted to the speed of the motor to make the display a consistent width regardless of the motor's speed.
This is how the LED's will be soldered to their respective Digital Pin. Also I used to have trouble programming PIC microcontrollers and not to mention that many of the code I'm used to for PICs were written in raw assembly code. Connect the other end to the Ground soldered hole for me it was the second hole closest to the LED Ground strands. Furthermore, I did buy and play around with a quadcopter BLDC motor. While looking into the radio design details, I was worried about trying to detect a weak RF signal in the presence of a large interferer caused by the switching frequency of the air-core spinning transformer. This is because the electrics motors directly affect its speed and pushing capability. And it given here my propeller clock PCB layout, but for my project i made circuit on universal PCB, i just upload it PCB if any one want to make it on designed PCB then can make it easily fron that PCB design.
The interrupt gets executed after each timer 0 overflow, which overflows at adjustable time intervals. It does not matter which end of the resistor is in what hole. If you have 3. This propeller clock is mechanically scanned and displays in digital format. Clear timer overflows flag. Eventually, I decided to do it another way, taking power from the spinning armature of a plain out of the motor, I removed the bearing from one end of the motor, leaving a big hole. Power to microcontroler can be given in 2 ways.
