BS2 small form factor USB

Has anyone done a project with a small carrier board for the BS2? I'd like to find a custom PCB with on board USB mini plug like the Homework board, something along the lines of an Arduino Nano only for the BS2. I know it's a dated micro controller, I still really enjoy building with it.
I thought about trying to design my own and sending them off to JLCPCB. I'm hoping someone has already done it.

Comments

  • Take a look at this:

    https://www.parallax.com/product/28300

    -Phil
    “Perfection is achieved not when there is nothing more to add, but when there is nothing left to take away. -Antoine de Saint-Exupery
  • jmgjmg Posts: 13,928
    edited 2019-08-04 - 05:56:43
    DavidNyman wrote: »
    Has anyone done a project with a small carrier board for the BS2? I'd like to find a custom PCB with on board USB mini plug like the Homework board, something along the lines of an Arduino Nano only for the BS2. I know it's a dated micro controller, I still really enjoy building with it.
    I thought about trying to design my own and sending them off to JLCPCB. I'm hoping someone has already done it.
    Do you want to include the USB-UART, as a module, or as a chip ?

    There are lower cost DIP form factor modules with MINIUSB like CP2102N-MINIEK ex Mouser Digikey

    Or, Asian brands come cheaper - this one is $1.00
    https://www.electrodragon.com/product/usb-ttl-serial-ch340-board/
    - but that has a larger USB connector, and a 0.1" right angle header, with fewer handshake lines.

    or eBay has similar form factor CP2102, with more handshake lines
    https://www.ebay.com/itm/USB-zu-TTL-Konverter-Modul-mit-eingebautem-in-CP2102-N9P1/382915551910

    or Aliexpress
    https://www.aliexpress.com/item/32649901065.html
    https://www.aliexpress.com/item/32953073716.html

    and this one is a more compact form factor, micro USB, with a DTR handshake line, so could suit a small carrier board
    https://www.aliexpress.com/item/32666390846.html 89c
  • Thanks very much for the suggestions. The 2pe motherboard looks interesting. I turned to YouTube hoping to find one of these in use but nothing turned up. I'll order one and give it a try. I've attached a picture of my project robot to show where this is going.
    Thanks again!
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  • That's a serious chassis! I would throw a Propellor at it, but I understand the love for BS2. :)
    Infernal Machine
  • Thank you. The Propeller is little over my head so I'm sticking with what I'm comfortable with. The chassis was inspired by a creator in Lativa who teaches at a university. The RTU Robotikas Klub's version is far superior to mine. I actually contacted the gentlemen in Lativa, he was really friendly and a pleasure to correspond with.

    The chassis was made on a Tormach. The motors are Maxon brushless and from ebay. The drives are simple 10a reversing Hobby King units.
  • DavidNymanDavidNyman Posts: 48
    edited 2019-08-11 - 22:18:44
    A little more progress today. Sadly, the Maxons have to go. I knew it was a long shot with the tiny 3 watt brushless motors. The reduction is 157:1. The chassis works great in a straight line but when I try to turn, the trouble begins. Went ahead and ordered brushed 22mm gear motors from Servo City. 270:1 ratio, 44 rpm should fix the turning issue. I'll have to machine the motor mounts for a slightly different screw pattern. Lol, all in a Sunday.
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  • The rover moved today under it's own power. I bought 44 rpm 22mm planetary gearheads from ServoCity along with Simple motor controllers from Pololu. Running a USB homework board that has been physically cut down to fit. An Xbee allows it to communicate with the base remote using a heavily modified program written for the BoeBot years ago.
    The motors have plenty of power to skid steer all 8 wheels although it won't win any races. It does move along at an acceptable pace. I'll be adding the Ping and compass next!
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  • Amazing.
    But the photos are missing something. Where is the frustrated domestic, who spent his entire time today trying to catch it? (And feeling run off of his four paws.) (Cat that is.)
  • Lol, No cats here. But here's a picture to show this has been an obsession of mine for a while now.
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  • ercoerco Posts: 19,516
    Ooooooooh that's a lovely chassis! Please share a video in the Robotics forum. And consider programming a figure 8 to add your bot to the figure 8 challenge that started 6-1/2 years ago! See http://forums.parallax.com/discussion/138125/ercos-figure-eight-challenge
    "When you make a thing, a thing that is new, it is so complicated making it that it is bound to be ugly. But those that make it after you, they don’t have to worry about making it. And they can make it pretty, and so everybody can like it when others make it after you."

    - Pablo Picasso
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