I'm looking for a throttle for my trolling motor. I picked up a controller (https://www.ebay.com/itm/100A-50V-12V-24V-Reversible-DC-motor-Speed-Controller-PWM-waterproof-box-arduino/172858600514?hash=item283f2cec42) which accepts several different throttle types. The simplest would be a linear 10kOhm linear pot but I need a "bump" at dead center because that is where zero throttle. It appears that the pot is being used as a voltage divider. On one side of center is forward and on the other is reverse. Hooking only one side and the wiper to the controller results in roughly half to full throttle (based on testing with a lightbulb). The reversing switch has no effect when using the supplied 10k pot. I've hunted but can't seem to find a pot that matches what I'm looking for. Ideally it would only have a 180 degree turn so I could install it in place of the step switch currently used for speed and direction control.
Controller data sheet: www.dropbox.com/s/v0k34mu28nlfg79/FR5050%201.1F%20complete.pdf As best as I can tell, a 0-5V hall-effect throttle would work and require the use of the reversing switch. Some possibilities are: 1) https://www.ebay.com/itm/Hall-angle-sensor-0-360-degrees-0-5V-output-12bit-no-mechanical-contact/132132195494?hash=item1ec3b14ca6 2) https://www.ebay.com/itm/Non-contact-angle-sensor-digital-potentiometer-0-360-degrees-without-dead-ends/282813778349?hash=item41d903c9ad:g:l24AAOSwbIFaYIBF 3) https://www.ebay.com/itm/Clarostat-HRS100SSAB090-Hall-Effect-Rotary-Position-Sensors-New/222206305275?epid=1780036506&hash=item33bc8723fb:g:hR0AAOSw-YVXnxhD 4) https://www.ebay.com/itm/BEI-93603603-Rotary-Hall-Effect-Sensor-9360-Series-Duncan-9360-3603-New-Nnb/113045830280?hash=item1a520e7a88:g:hF0AAOSwruxbGY9o For now I'm going to just put the controller inline between the battery and motor. I've verified that at full throttle the step switch in the motor handle is just a pass-through of the battery voltage. If it tests out being reliable enough I may then install the throttle in the body of the motor top and have it attached to the handle. In the meantime, I will just use a rotary knob for throttle input. Hope this makes sense. Any suggestions are welcome. Thank you, -- David D. Nelson _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
