Dynamic lights with CMOS integrated

   A few few years ago (in 1995), Tehnium magazine publish an article send by me 😀 (then I was a young student) in nr. 1/1995 (see magazine).
   Schematic was inspired by article from Tehnium anual magazine 1990, but my schematic have extra ligts "games":

   A few time ago (3-4 years) I need a simple schematic for automatic dynamic games without microcontrollers, so I remenber my schematic... but I simplify my schematic to eliminate useless states, so new schematic is

   I maded the schematic on test board:

   I made few movie with this schematic, in my language, but lights made without language 😇, so, I reccomand you to see at nest movies:
- joc de lumini cu 4 canale

- joc de lumini cu 4 canale (2)

- joc de lumini cu 4 canale (3)

- joc de lumini cu 4 canale (4)

Gear Shift Indicator

   For car tunning enthusiastic like my friend George I design a Gear Shift Indicator based on my old article when use just keys, diodes, few resistors and 7-segment display. Now, I use TLE4905L hall sensors instead simple keys (push buttons) and Arduino board.
   Schematic is simple:

  If you upload my GearShift_1.ino sketch, on display you can see:
- P for parking

- 1 for first gear:

- 2 for second gear

- 3 for third gear

- 4 for fourth gear

- 5 go fifth

- 6 for sixth gear

- 0 flashing for reverse gear

- nothing for unknown state:

  You can see George's movie (without sound 😎) named Gear Shift Indicator with first test in workshop: