Randomizing dice... ELECTRONIC PRODUCTS AT OLSJ New And Inclusive The Project begins...
Stage Are you ready...ok let s go Collect PCB, then wire wool solder side, write name on Name Randomizing dice...page 1 Stage 2 Drill the small round & rectangle 1mm component holes (68 holes!!!) Drill your circuit board Drill the 4 x 2mm SQUARE strain holes Stage 3 diode D1 A diode has a silver end which is the cathode Push through PCB across the d1 gap Check the silver band is upwards Now show it to the teacher Stage 4 solder the diode Snip the legs off down to
Stage 5 collect a 1k resistor Stage Collect a 1 resistor, check the colours are Brown, black, red, gold And so the project continues Push through PCB across the r1k gap Randomizing dice...page 2 Stage 6 solder the 1k resistor make sure the Gold band is Drill down. your Check with circuit teacher board Stage 7 collect another 1k resistor check the colours are Brown, black, red, gold Push through PCB across the r1k gap make sure the Gold band is down. Check with teacher Again Snip the legs off down to Stage 8 solder the r1k resistor Snip the legs off down to
Stage 9 collect a 10k resistor Stage Collect a 1 resistor, check the colours are Brown, black, ORANGE, gold More to come... Push through PCB across the r10k gap Randomizing dice...page 3 0 solder the 10k resistor make sure the Gold band is Drill down. your Check with circuit teacher board 1 collect another 10k resistor check the colours are Brown, black, red, gold Push through PCB across the r10k gap make sure the Gold band is down. Check with teacher Again Snip the legs off down to 2 solder the r10k resistor Snip the legs off down to
3 collect another 10k resistor Stage check the 1 colours are Brown, black, ORANGE, gold Ready for more... Push through PCB across the r10k gap Randomizing dice...page 4 4 solder the 10k resistor make sure the Gold band is Drill down. your Check with circuit teacher board 5 collect another 10k resistor check the colours are Brown, black, red, gold Push through PCB across the r10k gap make sure the Gold band is down. Check with teacher Again Snip the legs off down to 6 solder the r10k resistor Snip the legs off down to
7 collect an R180 resistor Stage check the 1 colours are Brown, GREY, BROWN, gold And now... Push through PCB across the r180 gap Randomizing dice...page 5 8 solder the R180 resistor make sure the Gold band is Drill down. your Check with circuit teacher board 9 check the colours is only BLACK collect A zero ohm resistor Push through PCB across the R0 gap Again Snip the legs off down to Stage 20 solder the r0 resistor Snip the legs off down to
Randomizing dice...page 6 And now...the 1uF capacitor...it controls the frequency Stage 21 collect a C1 uf capacitor Stage check the 1 VALUE on the side of the capacitor is correct Slide some single core sleeves over each leg. Red on the long leg, black on the short leg Both legs should be covered with coloured sleeves Stage 22 Place the C1uF Capacitor Fit the capacitor into the PCB across the C1uF gap Make sure the red leg is to the top of the pcb and the BLACK leg is to the bottom of the pcb. Check with the teacher that it is in correctly. Capacitors are polarised components so it is important they are fitted the right way around Stage 23 solder the C1uF resistor Snip the legs off down to
Randomizing dice...page 7 And now...the 100 uf capacitor...it stores charge. Stage 24 collect a C100 uf capacitor check the VALUE on the side of the capacitor is correct Slide some single core sleeves over each leg. Red on the long leg, black on the short leg Both legs should be covered with coloured sleeves Stage 25 Place the C100uF Capacitor Fit the capacitor into the PCB across the C100uF gap Make sure the red leg is to the top of the pcb and the BLACK leg is to the bottom of the pcb. Check with the teacher that it is in correctly. Capacitors are polarised components so it is important they are fitted the right way around Stage 26 solder the C100uF Capacitor Snip the legs off down to
Randomizing dice...page 8 And now...the tactile switch press to roll the dice. Stage 27 collect a Tactile switch This is a push to make switch that makes a clean signal when it is pressed and released Check with your teacher Carefully place the switch into the board then solder the 4 x legs to the circuit board Stage 28 collect an 8 Pin Socket Best soldering here! Fit the 8 pin socket into the PCB. Check that all 8 legs are through the holes. (you can even bend over the legs to stop it falling out!) Check with your teacher Then solder to the board 8 No legs must be bridging
Randomizing dice...page 9 And now...the 16 pin socket to hold the decade counter. Stage 29 collect a 16 pin socket This socket will hold the decade counter integrated circuit (IC). The socket can be soldered into the circuit board then the IC is pushed in. the IC s can be removed easily and re-used from the socket. Pin 1 Pin 16 Place the socket into the board. Check all the legs are pushed through the holes Check with your teacher A 16 pin socket Check with your teacher Stage 30 soldering the 16 pin socket Solder all the bottom pins next The 16 pins should all be visible on the solder side of the circuit board Solder pin 1 first Solder pin 9 next Finally Solder all the top pins
Randomizing dice...page 10 And now...you can attach the 6 x LED s to the circuit board. Stage 31 collect an LED (Light Emitting Diode) The LED s will light up to display the number. You must sleeve each leg to make them stand up on the circuit and to protect the legs from touching each other. Cathode (short LEG) Anode (long leg) An LED (Light Emitting Diode) Slide a rubber sleeve over each leg Red over long leg Black over short leg FIT To the circuit board into the led holes. The red leg goes into the + hole Stage 32 soldering the LED s The long leg should be sticking out of the + hole on the first LED. Check with your teacher Solder the 2 x legs to the circuit board. Snip off the excess legs Collect 5 x more led s. sleeve the legs and fit into the other LED holes. Ensure long leg (red) is in the + hole. Check with your teacher Solder the led s in place. Snip all the legs neatly.
Randomizing dice...page 11 And now...you can attach the battery clip Stage 33 collect a Battery Clip The red and black end s should already be stripped back and tinned Twist the red and black wires together half way up Push the red through the +ve hole and the black through the -ve hole Push both wires back into the solder holes. Check with your teacher then solder in place The battery clip should now be attached to the circuit. Pull the end so that the loops are tidy
Randomizing dice...page 12 And now...you can attach the switch wire. Stage 34 collect a length of yellow multi core wire (150mm long) Strip back both ends 1cm. Twist the strands on the end s together Push one end of the wire through the SW1 strain hole Place the end of the wire back into the sw1 hole. Check with teacher. Solder in place. Place the other end of the wire back into the sw1 hole. Check with teacher. Solder in place. Tidy up the wires and keep the loop on the end just in case you want to attach a switch later
Stage 35 collect a 555 Timer 1 There are 8 legs on the timer. Pin 1 has a dimple next to it. Randomizing dice...page 13 And now finally...you can fit the 2 x integrated circuits. Now Fit the 555 Timer in the socket Carefully push the 555 tmer into the socket. Make sure the dimple is towards the left hand side Stage 36 collect a 4017 decade counter Now Fit the Decade Counter in the socket 1 There are 16 legs on the decade counter. Pin 1 has a dimple next to it. Carefully push the decade counter into the socket. Make sure the dimple is towards the right hand side
Randomizing dice...page 14 It is time...to test the circuit. Stage 37 Attach a battery pack CHECK When the battery pack is attached one of the led s should be lit When you press and hold the switch the led s should flash Does it work Correctly??? When you release the switch the led s should stop flashing and only one LED should remain lit What if it is not working???? Is the battery connected? Are there any components missing or in the wrong way? Is your soldering poor and bridged???
Randomizing dice...page 15 It is time...put the circuit into a casing. Collect a vacuum formed mould which is used for the casing. There should be 4 holes in the corners and a switch hole Place your circuit into the mould push the yellow switch wire through the hole on the end Push the switch back into the hole Tin each leg of a rocker switch. (melt solder into each leg) Cut the yellow loop, strip and attach both wires to the switch with solder
Randomizing dice...page 16 It is time...put the circuit into a casing. Collect a Battery pack and fit this into the casing Test the circuit works again!!! Place the top cover over the 6 x LED s Secure it in place using the 4 x plastic rivets in the corners Test the circuit works again!!! Congratulations.you have finished the project. Let the teacher mark your work before you take it home