Sorry, I thought I read you had your regen set to 0. My mistake.
Ambitious project dude, I love it 
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Yeah it was someone’s recommendation to use the setting of 0A… I didn’t take it.
Thanks on the positive words, so far so good! Metal fab, woodwork and some fiberglass away from a final model!
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Placing here for future reference. I think the kart needs a speedometer and just a simple battery percentage reading. I will modify the open source code to suite my needs and use a 128x128 OLED screen (I have a couple from an augmented thermal vision project I was working on previosly) running off the teensy I have already running my throttle inputs and throttle light bars.
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I have experimented with OLED display. You may want to start off this branch: https://github.com/janpom/davega/tree/display_refactor
The basic functionality is in place. You’ll probably want to adjust what’s displayed. Currently it’s very simple. It just shows 4 lines of texts:
- max speed
- battery voltage
- trip distance
- lifetime distance
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You rock! Thank you. If they are available, I would love to show some support by buying a sticker or 2 off of you!
If you have any, PM me
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Dam ! Once again, you get me !! I’m in !!!
I have to find how to make mine now 
Looking at your face is awesome too 
it’s exactly what I’m looking for in a new project !
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I’m prettier than that! hahaha that’s my buddy / test dummy.
In other news! Find out today if the school is going to give me any grant money to help cover the costs of all this nonsense that is all in the good of science!.. you know, for research.
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as long as we can see the same expression on your face, that’s fine!
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Mcmaster hardware came in today and I am ready to start moving on more physical parts of this project. @BluPenguin should receive the battery soon and am excited to see what they do
My to do list is as follows:
-
get dimensions together and get the “trucks” / “steering knuckles” cut from Sendcutsend.com so I can weld them up when I have access to the facilities at school again.
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Work on the open source DAVEGA code and try and tie it into the Teensy doing the throttles and throttle input light bars… maybe try and add a reverse switch as well (low priority)
-
create CNC file for the weird rig I have to make for the bent maple deck.
-
cnc foam for deck and enclosure
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epoxy and vacuum bag deck pieces
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final design and 3D print handles, joystick caps, loop key/charger/microUSB port and speedometer screen bezel (Using formlabs tough resin)
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trace the final shape, measure a couple of times and drill/cut once!!!
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finish and poly all the wood
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fiberglass enclosure
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spray paint or powder coat the welded parts?
-
FINAL ASSEMBLY!
- we are taking pictures! and driving some parking lots!
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UPDATE:
Sendcutsend get me my design for the back to me within 3 days and for a decent price.
Gotta get access to the welder now and melt them all together.
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hahah fun to see who is behind the “madman who built a kart with maytech hubs”. Always wondered if there was a post about it. Cool stuff man
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It’s coming along. One day I will just be folklore.
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Decided to post this here as well as on the cheap and free thread.
update, I just bought them from a different vendor with free 2 day shipping
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Finished doing the modeling of the handles and joystick “caps” … so time to print them!
Using Form Lab “Tough” resin. Hopefully have them printed by the end of the week. I designed them to hold the joystick PCB’s and bolt into the laser cut metal center part of the wheel.
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So awesome man, just read the entire thing looks so fun !
Nice job on the design too !
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The actual design aspect was kind of put to the background of function and form but I think bent plywood and speed are pretty darn cool myself
I think it will be awesome when it is a completed object and all the electronics are integrated to an enclosure, there will be very little that makes it look like it should move a grown man at 30mph or accelerate the way it does. I am so excited to get the deck built and have a curve
The battery is coming back to me tomorrow from getting reconfigured by @BluPenguin and got 2 more P groups so it is now 10s7p in a layout that allows for it to fit in the enclosure in the renderings. More info on it tomorrow when I receive it and stop drooling.
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Battery came back from @BluPenguin land! I am digging the clear shrink wrap and the communication allowed for us to chang from my original plans for a 10s6p stacked configuration to a 10s7p staggered with the BMS on the top.
Battery is now 10S7P and charge only BMS. This is a tiny cube of lightning!
I will now be able to boost the regen and actually have max power to the motors.
The battery will sit flush on the new “deck” and the motor wires will come up through the deck in front of the battery with the esc’s on top of or in front of the battery. Whatever works, I will have to tighten up my harness but that is little fish.
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UPDATE!
resin 3D printers are awesome!
Got the handles, joystick caps, bezels for lights and screen all back today.
Now I am finishing up the setup and final wiring for the @janpom ‘s Davega OS setup…
But I need help
I cannot get it to show data even with it wired correctly and my Baudrate @ 115200 bps and the controller set as PPM and UART
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Goofed around with the code and still can’t get it reading anything. Tried other firmware, tried updating the esc, tried stuff I didn’t even know what it was changing… tried some more. Still can’t get it to read info off of the esc. I think it is Arduino side because there are TX and RX LED’s and they aren’t blinking when it is powered on…
It was never part of the design to have a screen but now that I am so close, I really want to get it working!
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Got it working!!! It was the firmware. I had to downgrade to VESC fw3.48 to get it to work.
*Still have to go back in and edit the number of poles in the code to the proper amount.
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