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  1. mintycrayon

    Thanks Endless Sphere for inspiring my interest in EV

    Ya, I guess that's what it does. Thanks for giving it a name :-) Appreciate the offer. Hauling a piano with an e-bike makes me :lol: ... it's so unexpected but brilliant. My current DIY project is to update my very old tiny house. Re-doing my only bathroom at the moment. Needed to haul a few...
  2. mintycrayon

    Thanks Endless Sphere for inspiring my interest in EV

    Originally inspiried by teklektik 2WD Electric Yuba Mundo Build thread and articles from spinningmagnets. This was my reference plus the attached picture of an old dude being hauled around on his wheeled rocking horse. Today I reached a new milestone when I was able to haul 150 lbs of...
  3. mintycrayon

    NPN transistor affected by everything

    Search "How to reduce noise in an electrical circuit". Typically one or more capacitors are used. You calculate the base resistor according to how much current you wish to drive through the relay to turn it on. https://www.quora.com/How-much-current-does-the-coil-side-of-a-relay-draw...
  4. mintycrayon

    What can a Grin controller + cycle analyst do that KT controllers + KT display can't do?

    Without a motor thermocouple supplied to the KT controller there is no possibility of showing motor temperature. If the KT controller sampled the thermocouple from the motor the KT controller could multiplex as described below. An oscilloscope would show a slightly noisy square wave where the...
  5. mintycrayon

    What can a Grin controller + cycle analyst do that KT controllers + KT display can't do?

    The 6 pin Molex INPUT connector on the KT only has 5 wires; no sixth wire to monitor temps. The multiplexing scheme can be done with a simple transistor on the controller so nobody ought to be disputing the feasibility - only that it doesn't matter if there is no data source.
  6. mintycrayon

    Cycle Analyst - still solid choice?

    I like how much field testing and verification you're doing on this project. It's not really an alternative to CA without ESC unless I'm confused about how this typically gets included in a build. If you're looking to set expectations for ESC then here is a project that shows a lot of promise...
  7. mintycrayon

    Cycle Analyst - still solid choice?

    I assume we're discussing how to influence CA motor control by spoofing various inputs. This is cool because it extends the life of CA without changes to the base product. Maybe experiment with how few samples per second are acceptable and how this affects the behavior of CA in a way that you...
  8. mintycrayon

    Cycle Analyst - still solid choice?

    Good job getting an electronics engineer and programmer interested in the project. To me this seems like that dog won't hunt. Hope to be proven wrong. BTW, here is a project that integrates a RaspberryPi with Ant+ so the interface and low level stack is not completely unknown...
  9. mintycrayon

    Cycle Analyst - still solid choice?

    I'd recommend you look at Microtype Engineering as an example company that produces prototypes. I like watching their youtube channel https://www.youtube.com/c/MicroTypeEngineering. A professional engineer with PCB, embedded software, and required tools likely has a daily loaded rate of, what...
  10. mintycrayon

    Can I fix this LED driver?

    Look at how the solder pooled around R4 and R5. This suggests to me that the board over-heated by a lot. Maybe R4 and R5 turned into surface mount heating elements and gave up. Other than the solder pooling did they crack too? If you insert a buck converter to lower the DC input to the LED...
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