3D Printed Boosted Board Killer

Just received the first PCBs I made of my precharge Antispark. Will solder them and do some intensive testing next week this should be very nice. 20

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Nice. Love what I’m seeing here dude!

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I have a few more questions. Thank you in advance!

  1. Isn’t it better to print the battery/VESC case with TPU instead? It’s more durable and it can flex when the board flexes.

  2. I already have a 1000W 12V server PSU. Should I get a voltage booster like below and rely on BMS to balance charge the battery pack? https://www.amazon.com/dp/B00E8D7XYG/?coliid=I3MVENO2EUVXXT&colid=2NAX0GX2GD9J1&psc=0&ref_=lv_ov_lig_dp_it

  3. Do I need to buy LONGBOARD SHOCKPAD RISERS 3MM ? https:///products/longboard-shockpad-risers-3mm?variant=712549924887&gt

  1. No. Solder joints, nickel welded batterys and in general all pcbs dont like flex. You can split up the battery into smaller parts and spread them across the board and have them connected with some silicone wire but you will run into ton of loose connections if you print this thing in tpu and ride it for a while.
  2. yes that works. I used a Boost Converter from ebay (300W 80V boost converter) to charge my old board with. But these days I perfer to have a small power brick with 90W (12S Liion charger) from aliexpress with me so I can charge wherever I go and dont have to think if Its worth carrying this brick.
  3. You can but they only protect your deck and dont have any ride quality improvements since you will squish them anyway when screwing them in. Ride quality only gets improved by softer and bigger wheels and a softer deck
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Thank you very much for the help. I also made a list of components for the anti spark board. Do you mind taking a quick look at it @Pryside ?

  • Power switch >> not sure what to get. please help!
  • 4X 1M Ohm Resistors (R1,2,4,5) >> Metal Film Resistors - Through Hole 1M ohm 1% 0.4W

https://www.mouser.com/ProductDetail/Welwyn-Components-TT-Electronics/MFR3-1M0FC?qs=sGAEpiMZZMtlubZbdhIBIJtQxnYsq7hXit92tIgpI8A%3D

  • 1X 15 Ohm Resistor(R6) >> Wirewound Resistors - Through Hole 3W 15 Ohm 5%

https://www.mouser.com/ProductDetail/Yageo/PNP300JR-73-15R?qs=sGAEpiMZZMtlubZbdhIBINt%2Ft6Hry3%2FBZn3Gyw1qhA0%3D

  • 1X 1 OHM Resistor ( R3) >> Wasn’t able to find a wire resistor. What is the part number that you used?

  • 3X 12V Zener Diodes(D1,2,3) >> Zener Diodes 12V 3W

https://www.mouser.com/ProductDetail/ON-Semiconductor/1N5927BRLG?qs=sGAEpiMZZMtQ8nqTKtFS%2FJ7m6e1KBCgub6c2uyKgC%2BY%3D

  • 1X 16V 4.7μF Capacitors(C1) >> Aluminum Electrolytic Capacitors - Radial Leaded 16volts 4.7uF

https://www.mouser.com/ProductDetail/Nichicon/USP1C4R7MDD?qs=sGAEpiMZZMsh%2B1woXyUXj7onzYv6nMPCw8k8X5hq4n8%3D

  • 2X IRFS7530 Transistors(T1)

https://www.mouser.com/ProductDetail/Infineon-Technologies/IRFS7530TRL7PP?qs=sGAEpiMZZMshyDBzk1%2FWi%2BDdTe3kt8oihq%2FEFTk6nI%2BSM6z%2BASO6Fg%3D%3D

  • 1X IRFB3006 Transistor(T2)

https://www.mouser.com/ProductDetail/Infineon-Technologies/IRFB3006GPBF?qs=sGAEpiMZZMshyDBzk1%2FWi5%2BqVgN3%2BWS8frDEDJEFm2A%3D

I’m totally building this board. I got more questions for you @Pryside . I wish you would update the post with more details. That would be nice to share the complete part list.

  1. Is 60 AMP enough for BMS? Should I buy one with higher or lower current? I found a smaller version that supports 20A and found another with 100A. https://www.lithiumbatterypcb.com/product/13s-48v-li-ion-battery-pcb-board-54-6v-lithium-bms-with-60a-discharge-current-for-electric-motorcycle-and-e-scooter-protection-2-2-3-2-2-2-2-2/ This question was answered and I went with the 60A BMS: https://www.electric-skateboard.builders/t/noob-question-thread-ask-your-questions-here/9559/6937?u=farnamweb

  2. Are you using the following motor mount ? Is there a cheaper alternative? https:///collections/electric-skateboard-motor-mounts/products/single-bolt-on-motor-mount-set-only-black

  3. What is the belt length? 265?

  4. I can buy LG HG2 for $3.5/cell. Same capacity and extra 5 AMPs ( 20A) . Should I get HG2 instead? This was answered here: https://www.electric-skateboard.builders/t/noob-question-thread-ask-your-questions-here/9559/6950?u=farnamweb

    Will buy 30Q

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Has anyone modified the code so it will work with the “TTGO LORA32 868/915Mhz ESP32” 128x64 screen? I’m trying to build the Firefly nano remote but I would love to have features like an Odometer and cruise control on it.

I’m using an I2C 128x64 Oled. Not ready to share yet tho. Never tested. IMG_20190422_231351

Can you send gerber files? Thanks (What is that 8 pin for? next to Q3…) I guess 3 pin Mosfet could be used right?

just use another wirewound resistor like r6, should be fine, with a quite high power rating. Dont really remember wich one I picked and on my PCB there will be some changes and a quite different precharge fet and resistor to save space.

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  1. Ignore these stupid current ratings. The 60A BMS can handle pulsed up to 1500A but thats not the reason. You want to buy something that is somewhat in the range of what you will be using. 60A * 3,6V on a 10S is 2.2kW you will never ever use that much power for more than a few seconds so 60A is pretty save. I calculated the losses at 60A and they were around 7W so no problem there.

  2. Yes, they are quite terrible and took me like a week to set up correctly. Would propably try the electricboardsolutions.com

  3. nope, running on the MBS AT 100mm and 38T there and 15T on the motor so I had to use 280 HTD 5M 12mm wide belts.

  4. yeah any cell would work, just take a look at their internal resistance and you can pull a lot more pulsed power than what they are rated.

Will publish all Antispark stuff very soon :slight_smile:

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Thanks man

I got this mount and belt . The mount has an idler which is interesting . The seller calculated the belt length for me. It’s 320

@matiller helped me find the resistor https://www.mouser.com/ProductDetail/Ohmite/TUW5J1R0E?qs=sGAEpiMZZMtbXrIkmrvidMPY4i6h3AHP%2BV%2BE2e384xE%3D

I’m way to excited to finish the board. Do these changes affect the performance of the board or are they just saving space?

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What are your VESC settings for breaking?

putting a tvs so high up there will destroy its purpose, most transcients wont even reach the caps since you have some inductance from the wires. Put it directly on the pcb as in noi’s picture

-75Amps on the Phases and -10A on the battery are my max settings. May seem high but again pulsed this is perfectly acceptable. Safety is more important then getting 2 more cycles out of your battery.

is it possible to buy a anti spark from you? would love to build your board as well :slight_smile:

Capture

Please verify the wiring.

BAT - >> BMS B -
BMS P- >> not connected to anything
BMC C- >> charger port & Anti Spark’s B-

  1. I just got my Loaded Vanguard Deck. The top has a clear grip coating. Do I still need to install a grip tape?

btw, Loaded is selling new factory blemished decks for $148

https://www.amazon.com/gp/offer-listing/B075NQGJJ8/ref=dp_olp_all_mbc?ie=UTF8&condition=all

  1. There is one XT60 on the battery case for charging. What is the purpose of the other XT60 on the VESC case?

  2. What size/length bolt and nuts do I need to attach the wheel pulley to the wheel ?

I’m assuming that I need to place a nut on the wheel pulley and bolts on the retainer. In that case, there is no room in the wheel pulley hole to hold down the nut using a nut driver.