I'm just sharing my experiences of my build
I were first building an electric bicycle, and it was okay. Not so great with the usefulness, but great speed.
I were having issues with the controller and bms, so i switched to VESC. It then worked good. With that i found out that electric skateboard would be a good project, and easy to carry around instead a whole bicycle(or actually it's battery).
So, i went and bought a skateboard for 20€ from local market. Ordered all the needed things, and built the board.
And i got few LiPo batteries from my friend. 2200mAh cells. I disassembled them all and soldered together. (picture doesn't have the cheap chinese BMS that i have)
Here's the completed E-skateboard:
You might notice that the trucks are weirdly. At the time when i took to picture, i haven't ever really thought about the truck directions until now. When i took a test drive, i thought that "Have i lost my skating skills?!". Then i noticed that in order to actually drive it, the trucks need to be faced outwards(With motor outwards. No ollies
I then build Vedder's NRF nunchuk. I had a little struggling with the USB chip at first, but all turned out well.
I disassembled a normal wired Wii nunchuk and installed nunchukRF with battery in it.
I had problem with the device not working. It could not connect at all. No LEDs on. I then got one step forward by installing different firmware in it that i got from some german site.
And then i found out that i need to "activate" the nunchuk by connecting it to Win7 virtual machine(probably full Win7 does the same). What is that thing? I haven't found out why it requires that? Any idea?
Here's the nunchukRF:
Only inside pictures. I made also a hole on top of it, and hot glue as light pipe to see the status LED.
Here's the only unsolved problem so far. The motor mount and truck are not very good with eachother. The screws get loose all the time. Yeah i know i should weld or use some loctite, but i'm waiting for new trucks to arrive.
The current setup goes about 25km/h top speed. I'm quite happy about it so far. I haven't tested any hills yet, so i don't know if it is satisfactory. I might install another motor with it, since i have two VESCs.
The board it wobbling some amount when going top speed, and on top of that out of curiosity(and to feel more professional) i decided to create a longboard(yay, not mismatching thread title!). So here's my build log about it:
Battery and controller enclosured are gluing:
Here's how the batteries wil be installed:
The enclosures will be something like this:
The longboard i made is way better than i thought. Only thing i am worried about is that it's bending about 5cm down when jumping on the board. I'll just have to wait for the new reverse kingpin trucks to arrive and i'll see how tall they are compared to the current trucks. I might end up adding more thicker risers.
I bough also "roving sheet" and epoxy resin. I'll coat the board with them and the enclosures separately with them.
Should i coat the entire board? Top and bottom, or just bottom and sides? Any other things worth noting? The grip tape is on it's way also.
The final design should then be:
-100cm x 25cm longboard with 25cm RKP trucks. 70mm wheels
-Two 5065 270KV motors with two VESCs
-7S2P 4400mAh battery (later upgraded to 10S1P 5Ah or similar)
-nice clean enclosures for electronics, 21mm height, and the battery wires going inside the board
-anti spark-switch or just battery connector
-clip for the controller on board
-USB connector for charging the controller
-some graphic to decorate the board