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Found 2 results

  1. Hi All, As per title I need some help- I'm getting false laps counted during use. Most of the time the system seems to work well, with the occasional short lap getting triggered. And very occasionally, laps being triggered on a different lane. Frustrating. I've got 5mm ZD1945 emitters in the timing gantry, and ZD1950 IR transistors in holes in the track next to the braid. The transistors are connected to a genuine Arduino Uno. I've used decent quality silicone wires back to the arduino in my track control box in a run of perhaps ~1100mm long. The grounds for the transistors are joined at ~300mm in that length (so 6 wires for 300mm, then 4 wires for the remainder). Control box: I was getting a lot of false laps triggered and partially resolved that by dropping the sensors lower into their holes in the track, but I'd appreciate input on how to make the system flawless if possible.. Does powering the arduino separately help? Are there improvements I could make to the circuitry? Could I put the sensors in the gantry to remove as much ambient light triggering as possible?
  2. Firstly i apoligize if this subject has allready been covered, i am new to this forum. I look after disabled kids as a volunteer so i put together a scalextric track together from 3 kits built all the buildings ect so now i would like to build a lap and timing system. I have tried webcam but is to unreliable because the kids keep activating the webcam by fingers or knocking the table. I have a game pad and a arduino uno board so i would like to know step by step details on what i need and how to put either one together. I am not sure what sensors to use but something that will not activate by knocking or shadows. Any help would be usefull
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