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Car decoder

1720 Views 10 Replies 5 Participants Last post by  injectorman
Hi Guys,
Installation guide 1.8 is the next update to be released.

Here however is the car decoder update as shown below.

Note some insulation tape was added to the braid cap and ferrite to prevent possible shorting on front axle. Left off for clarity.

Also note the antenna is pointing directly up, and torwards camera lens so is barely noticeable, but it is at bottom left hand side of the casr decoder PCB.

Folllow the picture, 6 things you should know :

1)Twist motor, braid and phototransistor wires together as shown. This is simply referred to as a twisted pair and helps shield unwanted RF. Add a dab of hotglue between wires on the PCB prior to twisting. This ensures the uninsulated parts of the wires do not come into contact during twisting.

2)Install ceramic 102 capacitors and ferrites on both motor and braid wires. We are currently experimenting with other values.

3)Ensure no braid, motor or LEDS wires adjacent antenna. Point antenna straight up vertical pointing for the sky. Antenna must project into cockpit if in the way.
Plan your install before going ahead.

4)Solder earth wire to motor can.

5)Use softer type braid, and ensure equal length and height. Sparing use of Inox can often help ensure better power to braids.

6)If for any reason you need to place the 470uF capacitor on a fly lead observe polarity or the chip will blow.
Shorting motor wires will blow the chip.
Shorting the braid wires will stop operation but will not blow the chip.
Polarity on the phototransistor is important.

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Good news.
I was able to source the ferrites at a good price and will include them with the car decoder included within the current price.

Typo error in first post, should be 103 not 102 ceramic capacitor.
Yes things changed since release as i get feedback from users and learn more.
Every situation could vary. If your cars count laps and change lanes correctly then no action is required as per my post last week. The parts are generally necessary and are good for the chip.

The car decoder hasn't changed so the recommendations are for all decoders.

Correct polarity is not important with capacitors.
Yup, the antenna is white and so vertical you can hardly see it but its bottom left of the decoder.
All wires twisted.
Cap and ferrite on both braid and motor wires.

They are the 3 and only 3 things you must do.

Use Blutac to attach chip to chassis, it absorbs shock and is easy to apply/remove.
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