HWBS Brake Sensor Alternative
- Thread starter awol
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D
Deleted member 4366
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A hall sensor or reed switch and a magnet. You just have to figure out where you can position them and how to fix them in place
For a hall sensor, you need three wires: two to power it (5v and 0v), which you can splice from the throttle or PAS, or you can get them from spare pads on the controller pcb. The third wire is the signal that switches on/off with the changing magnet position.
The reed switch just requires two wires. It connects them when the magnet comes close.
The sensor on a bicycle computer is a reed switch, so you can cut one off and use it as a brake switch on the back brake. You cable-tie it to the cross-bar where the brake cable is bare, and fix the wheel magnet to the cable so that it moves to the sensor when you apply the brake.
For a hall sensor, you need three wires: two to power it (5v and 0v), which you can splice from the throttle or PAS, or you can get them from spare pads on the controller pcb. The third wire is the signal that switches on/off with the changing magnet position.
The reed switch just requires two wires. It connects them when the magnet comes close.
The sensor on a bicycle computer is a reed switch, so you can cut one off and use it as a brake switch on the back brake. You cable-tie it to the cross-bar where the brake cable is bare, and fix the wheel magnet to the cable so that it moves to the sensor when you apply the brake.
Thanks d8veh, which of those methods would be the better one to fit onto the existing brake sensor connector at the controller,or will it depend on the number of wires it has? The controller will probably be an S06S
Would this be a correct type of hall sensor?
http://www.ebay.co.uk/itm/A3144-A3144E-44E-938-HALL-EFFECT-SENSOR-SWITCH-MAGNETIC-DECTECTOR-/151377551850?pt=UK_BOI_Electrical_Components_Supplies_ET&var=&hash=item233ece21ea
Would this be a correct type of hall sensor?
http://www.ebay.co.uk/itm/A3144-A3144E-44E-938-HALL-EFFECT-SENSOR-SWITCH-MAGNETIC-DECTECTOR-/151377551850?pt=UK_BOI_Electrical_Components_Supplies_ET&var=&hash=item233ece21ea
D
Deleted member 4366
Guest
I think I used SS41s:
http://www.ebay.co.uk/itm/20Pcs-41F-0H41-SH41-SS41F-S41-Bipolar-Hall-Effect-Sensors-for-Electric-Motors-/400633898101?pt=LH_DefaultDomain_3&hash=item5d47a42475
The S06S has three-wire connectors for brakes. Two are the 5v supply, and the other is the signal, which is the only one that counts. It normally floats at 5V, which lets the motor run. When you short it to ground, the motor power is cut. The hall sensor will connect directly to the three-pin connector (in the correct sequence), or you can use any switch to join just the signal wire to ground. You can use the yellow wire in the connector for your ground - or any other ground like the throttle black.
It makes no difference to the controller what type of switching you use.
http://www.ebay.co.uk/itm/20Pcs-41F-0H41-SH41-SS41F-S41-Bipolar-Hall-Effect-Sensors-for-Electric-Motors-/400633898101?pt=LH_DefaultDomain_3&hash=item5d47a42475
The S06S has three-wire connectors for brakes. Two are the 5v supply, and the other is the signal, which is the only one that counts. It normally floats at 5V, which lets the motor run. When you short it to ground, the motor power is cut. The hall sensor will connect directly to the three-pin connector (in the correct sequence), or you can use any switch to join just the signal wire to ground. You can use the yellow wire in the connector for your ground - or any other ground like the throttle black.
It makes no difference to the controller what type of switching you use.