Hi all. Apologies if this has been posted several times before. I won't confess to understand a huge amount about electronics so would appreciate some help please.
I'm building a battery powered 12v go kart for my children using the guts from an old golf trolley. The trolley has a 12v battery, and the motor controller receives input from a linear position sensor/soft pot https://www.spectrasymbol.com/wp-content/uploads/2016/12/SOFTPOT-DATA-SHEET-Rev-F3.pdf
The range of the motor controller input (please don't quote me on it) is between 0v and 4.8v.
I've purchased a cheap foot pedal from the jungle website as a bit of a punt, and when It arrived I realised it's actually based on a hall effect sensor. https://www.amazon.co.uk/gp/product/B07QBY88TJ/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1
Details of the sensor are:-
The difficulty I'm faced with is that the motor control module requires absolute 0v from the signal wire, up to 5v for full power. With the hall sensor allowing 0.8v through the signal in its "resting" position, It's in effect sensing that the trolley would just set off when switched on, and this locks out the controller until the signal returns to 0v. I have understanding of the differences between the pot and the hall sensor, and I know I can overcome this issue by doing away with the hall sensor altogether, but I'd love work out a way of being able to use the foot pedal in its current guises, rather than having to botch a rotary pot into the equation somewhere.
If anyone has any ideas on how to get round this, I'd really appreciate the help. TIA.
I'm building a battery powered 12v go kart for my children using the guts from an old golf trolley. The trolley has a 12v battery, and the motor controller receives input from a linear position sensor/soft pot https://www.spectrasymbol.com/wp-content/uploads/2016/12/SOFTPOT-DATA-SHEET-Rev-F3.pdf
The range of the motor controller input (please don't quote me on it) is between 0v and 4.8v.
I've purchased a cheap foot pedal from the jungle website as a bit of a punt, and when It arrived I realised it's actually based on a hall effect sensor. https://www.amazon.co.uk/gp/product/B07QBY88TJ/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1
Details of the sensor are:-
- Input Voltage: 5V
- Output: 0.8-4.2V
- Output Rated Load Current: 10ma
- Output Type: Voltage
- Pedal Rotation Angle: 15 Degrees
- Max Load Current: 10ma
The difficulty I'm faced with is that the motor control module requires absolute 0v from the signal wire, up to 5v for full power. With the hall sensor allowing 0.8v through the signal in its "resting" position, It's in effect sensing that the trolley would just set off when switched on, and this locks out the controller until the signal returns to 0v. I have understanding of the differences between the pot and the hall sensor, and I know I can overcome this issue by doing away with the hall sensor altogether, but I'd love work out a way of being able to use the foot pedal in its current guises, rather than having to botch a rotary pot into the equation somewhere.
If anyone has any ideas on how to get round this, I'd really appreciate the help. TIA.