Thanks to SteveF1964 I realized I hadn't clearly finished this, and it was buried in the pit lane thread:
4 lane single PB.
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Ingredients, 1 good PB, one knackered one but with salvageable sensor track piece, 2x squeeze (chicanes), 1 soldering iron, a scalpel, some wire and a little patience
1) Car ID Sensor:
All wires on the second track piece are connected to the PB parallel with the original boards connections.
At the track PCB for car ID sensor, on one board leave blue as is, and disconnect the green wire from the board. On the second board do the opposite: leave green as is, disconnect blue.
Jumpers (in yellow on my pics) are inserted as shown onto both boards. Scrape off green stuff (solder resist) before attempting to solder wire to tracks. Ignore the red markings on my picture (they were for the pit lane mod)
![Image]()
![Image]()
2) Blade Sensor:
The red and black wires on the second track piece are connected to the PB parallel with the original boards connections.
At the PB PCB The yellow wire is left where it is for the original sensor. The white is disconnected at the PB.
For the additional track piece blade sensor we wire the YELLOW wire to the hole on the PB PCB where we disconnected white. As with the original sensor the white wire is not connected to the PB.
Just to clarify at the PB we should have 2 red wires going to the original red terminal, ditto black, then the original yellow wire untouched to its original terminal and a new yellow wire going to the place which was originally the termination for white. No white wires at the PB.
The fat track is cut exactly where it says GND, shown on my pics, on both the blade sensor PCBs.
The white wire is cut as shown and resoldered to the terminal shown.
![Image]()
Fit 2x squeeze one on each lane about 1 to 2 straights before the PB. RichG's simple solution to stop missed counts. Essential for correct and reliable operation!
Here is video of it working
Next episode, wiring a pit lane off of the main straight with one PB
4 lane single PB.
Ingredients, 1 good PB, one knackered one but with salvageable sensor track piece, 2x squeeze (chicanes), 1 soldering iron, a scalpel, some wire and a little patience
1) Car ID Sensor:
All wires on the second track piece are connected to the PB parallel with the original boards connections.
At the track PCB for car ID sensor, on one board leave blue as is, and disconnect the green wire from the board. On the second board do the opposite: leave green as is, disconnect blue.
Jumpers (in yellow on my pics) are inserted as shown onto both boards. Scrape off green stuff (solder resist) before attempting to solder wire to tracks. Ignore the red markings on my picture (they were for the pit lane mod)
2) Blade Sensor:
The red and black wires on the second track piece are connected to the PB parallel with the original boards connections.
At the PB PCB The yellow wire is left where it is for the original sensor. The white is disconnected at the PB.
For the additional track piece blade sensor we wire the YELLOW wire to the hole on the PB PCB where we disconnected white. As with the original sensor the white wire is not connected to the PB.
Just to clarify at the PB we should have 2 red wires going to the original red terminal, ditto black, then the original yellow wire untouched to its original terminal and a new yellow wire going to the place which was originally the termination for white. No white wires at the PB.
The fat track is cut exactly where it says GND, shown on my pics, on both the blade sensor PCBs.
The white wire is cut as shown and resoldered to the terminal shown.
Fit 2x squeeze one on each lane about 1 to 2 straights before the PB. RichG's simple solution to stop missed counts. Essential for correct and reliable operation!
Here is video of it working
Next episode, wiring a pit lane off of the main straight with one PB
