UNPACKING/PARTS LIST .................. 4 SOLDERING ......................5 ASSEMBLY INSTRUCTIONS – DISPLAY SLICE ..........7 ASSEMBLY INSTRUCTIONS – CONTROLLER SLICE ........13 OPERATING THE WORLD CLOCK ..............18 PARTS IDENTIFICATION .................. 23 THEORY OF OPERATION ................. 29 IN CASE OF DIFFICULTY ................. 30 SPECIFICATIONS ....................
U N P A C K I N G / P A R T S L I S T Unpacking/Parts List Gently unpack the contents of the box. You should find one display pack for each display, and one controller pack if you are building a controller. World Clock Kit Page 4...
• It should take from 0.5 to 1 second for the joint to become hot enough to melt the solder. • Don’t overheat the joint, as soon as the solder melts and wicks into the joint remove the iron and hold still for a few seconds until the joint freezes. World Clock Kit Page 5...
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Water soluble rosin-cored solder is available at hobby stores. As for me, I don’t bother to clean up the board unless the counters are not working right, then I clean off the rosin. World Clock Kit Page 6...
( ) Load the four 22K and four 33K resistors located on the lower edge of the board. Push the part flush onto the board, spread the leads slightly and solder. World Clock Kit Page 7...
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( ) load the eight 24 pin SAA1064 ICs. The notch on IC should match the notch on the board. ) load the 18 pin socket at location U1, match the mark on the board with the mark on the socket. World Clock Kit Page 8...
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The four 7 digit displays have two decimal points, these decimal points can be used to orient the display; the decimal points go towards the bottom. Hold the display flat against the board as you solder. These displays are very sensitive to overheating so be quick about soldering these pins. World Clock Kit Page 9...
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( ) load the 14 alphanumeric displays one at a time. These also have a decimal point that should go toward the lower edge. Push these against the board while you solder the leads, and be careful again about over heating the leads. ( ) load the 16 transistors as shown below. World Clock Kit Page 10...
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I N S T R U C T I O N S ( ) load the two 10uF capacitors. They may have a small + sign near the + lead, or they may be marked with a line as below. lead World Clock Kit Page 11...
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If you are building a display board, seat the 18 pin PIC16F648 IC carefully into the IC socket with pin 1 up. Your display board is done and ready to use. Once you have all the display boards and the controller board built, read the configuration section to set up the clock. World Clock Kit Page 12...
( ) load the 8 pin IC socket, and have the notch match the silk screen outline. ) load the 1K, 10K and 150 ohm resistors in the locations marked as shown on the left. World Clock Kit Page 13...
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If you want to stay simple, just load it on the controller board. ( ) load the power jack. Fill the holes in the board with solder for strength as shown below. World Clock Kit Page 14...
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My 6 slice version will reset if I turn on the selftest because it draws a bit over 6 amps with all the test displays lit. The slices can be tested with smaller clock configurations. In normal operation many characters on the display slices are blank, lowering the current draw below 6 amps and allowing reliable operation. World Clock Kit Page 15...
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The example below has the controller in the second position, but it can be in any position. The top board and the bottom boards whether controller or display slice, need the jumper described below. World Clock Kit Page 16...
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I N S T R U C T I O N S Solder a small wire into the upper jumper location of the top slice, and a wire jumper into the lower jumper location of the bottom slice. World Clock Kit Page 17...
A S S E M B L Y I N S T R U C T I O N S Operating the World Clock In order to set up and operate this clock, one needs to understand the concepts and information structure of this clock.
• Test displays • Preset all data to factory values • Load Location-Data from storage • Save Location-Data to storage • Transfer Location-Data from controller to a Display • Transfer Location-Data from a Display to controller World Clock Kit Page 19...
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I N S T R U C T I O N S The controller top level menu is shown below. The ‘+’ key, minus ‘-’ key and Mode key are used to navigate and operate the menu. World Clock Kit Page 20...
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I N S T R U C T I O N S This Edit menu modifies the Location-Data currently showing on the controller slice. The edited settings can be stored into any display or into the storage on the controller slice. World Clock Kit Page 21...
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• To return the controller board to original values, Use the Mode key to cycle to the Get Loc Data and press ‘+’ to reload. The only difference when editing LOC-DATA from a display board is to first retrieve that data using the “FROM REMOTE” mode. Then use the above steps. World Clock Kit Page 22...
These parts can be placed in either direction on the board, they are not polarized. Diodes This is a polarized part; the stripe needs to match the stripe on the PC board. World Clock Kit Page 23...
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8 and 18 pin ICs are placed in sockets, mainly because they are reprogrammable parts, and you may want to update the software. IC sockets These come in 8pni and 18 pin versions. Be sure to mount this part with the marking for pin one matching the PC board. World Clock Kit Page 24...
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7 segment display on the right and a single LED on the left. The short lead goes into the square hole on the board. Try to be quick when soldering these displays, they are sensitive to overheating. World Clock Kit Page 25...
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Both this and the 0.0027 cap are non-polarized; mount it either way 1 Farad cap This part needs to be installed carefully, it is polarized. Look carefully at the picture in the mounting instructions. The metal strap is negative side of the capacitor. World Clock Kit Page 26...
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I D E N T I F I C A T I O N 10 microfarad cap Negative side Positive side The long line identifies the positive side which need to go into the hole near the + sign. Switches Power Socket ICs (Integrated Circuits) World Clock Kit Page 27...
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This kit has 8 pin, 18 pin, and 24 pin ICs Header and Connector Connector Header These are a pair of mating 20-pin right-angle connectors. The header goes in the top location and the connector goes into the lower location. World Clock Kit Page 28...
The controller slice detects power loss and reconfigures the board for low power consumption, keeping only the time base and processor active. On power restoration, all boards are reconfigured and the time messages restart on the minute interval. World Clock Kit Page 29...
So take a close look at the back of the board looking for bad solder joints and clipped leads in the area of the problem. Check for proper components and orientations. If you haven’t found the problem after thoroughly checking out the above list, email me at: customerservice@transistorclock.com World Clock Kit Page 30...
Power consumption: About 3.7 watts, (0.75 amps @ 5 volts DC) per board Temperature limits: Designed for room temperature operation, 60-80 °F Warrantee: There is no warrantee of any kind. KABtronics wants you to succeed and be happy with your clock, so don’t hesitate to email customerservice@transistorclock.com...