Delay Unit Assembly

Step 1. Add the 556 timer IC

Step 2. Add the wires

Step 3. Add the 1 megohm variable resistor (This controls the time delay.)

Step 4. Add the three 22 kilohm resistors

Step 5. Add the three remaining resistors

Step 6. Add the two 0.005-uf capacitors

Step 7. Add the two 0.05-uf capacitors

Step 8. Add the two cylindrical capacitors

Step 9. Add the SCR and the battery clip

Step 10. Add the flash and trigger wires

Step 11. View of the completed circuit so far

Step 12. Testing the delay unit