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t6 created page: documentation authored by David Huss's avatar David Huss
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...@@ -13,6 +13,7 @@ ...@@ -13,6 +13,7 @@
r2 dann auch wirklich ein tempco sein und sowohl u$1g$3, u$1g$4 und r2 dann auch wirklich ein tempco sein und sowohl u$1g$3, u$1g$4 und
r2 müssen in thermischem kontakt stehen, wie im bild hier (foto von r2 müssen in thermischem kontakt stehen, wie im bild hier (foto von
th 555 vco diy expo) th 555 vco diy expo)
- [ ] BOM: R6 is 2.4M we only have 2.2M how to proceed?
## 2017-03-30 Build Notes ## 2017-03-30 Build Notes
1. Take Components PCB 1. Take Components PCB
...@@ -44,6 +45,35 @@ th 555 vco diy expo) ...@@ -44,6 +45,35 @@ th 555 vco diy expo)
27. solder C3, 1n Styrofoam/Styroflex/Glimmer. (This Capacitor is for tuning and should be somewhat stable with changing temperature). 27. solder C3, 1n Styrofoam/Styroflex/Glimmer. (This Capacitor is for tuning and should be somewhat stable with changing temperature).
28. solder the Transistors Q3 and Q4, 2N3904. Careful to orient them according to the silkscreen. 28. solder the Transistors Q3 and Q4, 2N3904. Careful to orient them according to the silkscreen.
29. solder the precision voltage reference LM4040-10.0 in.Careful to orient according to the silkscreen. 29. solder the precision voltage reference LM4040-10.0 in.Careful to orient according to the silkscreen.
30. solder the electrolytic capacitors C6 and C7 with 10uF. Careful with the orientation. The white stripe needs to go to the round pad. The longer leg goes to the square pad. Make sure they are flat with the PCB otherwise you will run into problems later.
31. On the top side of the PCB solder the two polyfuses (print says R005 BJ6S)
32. turn the PCB around and solder one leg of the power connector to the bottom of the PCB. Make sure the opening is pointing left.
33. On the bottom side of the PCB solder the 100R Trimmer (print says 101) in. Make sure it sits firmly on the PCB.
34. On the bottom side of the PCB solder the 50k Trimmer (print says 503) in. Make sure it sits firmly on the PCB.
35. On the bottom side of the PCB solder the two 100K Trimmers (print says 104) in. Make sure they sit firmly on the PCB.
36. Take the Pots PCB
37. resistor R3 (2.2M) is not needed, bridge the contacts with a piece of wire (solder it there)
38. solder all 100k resistors (4 pieces) in.
39. solder all 1k resistors (2 pieces) in.
40. solder R11 with 1M
41. solder R6 with 2.4M (or 2.2M if no 2.4M available)
42. solder R35 with 330k
43. solder R32 with 3k
44. solder R33 with 1.8k
45. solder C2POTS with 220nF
46. Do not solder: push in the green pots (except PWM_CV)
47. Do not solder: push in the Jacks
48. Put the Panel onto Pots and Jacks. Screw it on with the fingers
49. solder Pots and jacks (make sure everything sits tightly, before soldering the first things). Be careful not to apply too much solder at the jacks.
50. Take of the panel again
51. Split the two 5-pin headers (2x male and 2x female) into four 1 pieces. Use a cutter first and then split it with two pliers.
52. stack both boards with the pinheaders inbetween and solder the pinheaders together (if you are not sure they are straight, only solder one pin)
53. Solder the last potentiometer (the one with the plastic shaft)
54. Put the ICs into the sockets (watch for the orientation! you may have to bend the IC legs to make them fit)
55. Put the Panel back on, screw everything into place
56.
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