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  • PhilB's Avatar
    Today, 12:22 AM
    OK, I though you were referring to the stepper driver carrier board.
    58 replies | 1670 view(s)
  • PhilB's Avatar
    Yesterday, 11:01 PM
    Ah, I thought they were 3.5mm. I looked at using 2.54mm but couldn't get even the smallest ferrule in the samples I got so moved up to 3.5mm. Even those are pretty tight with ferrules. I agree about pluggable...
    58 replies | 1670 view(s)
  • PhilB's Avatar
    Yesterday, 04:32 PM
    Nice job! Based on the thread, I think you soldered the micromod connector by hand, right? If you make any changes to the carrier board, a few suggestions. - Support Trinamic based Step Sticks. add the two extra...
    58 replies | 1670 view(s)
  • PhilB's Avatar
    01-01-2021, 10:50 PM
    I see no evidence of stupid questions... In fact, your servo questions are insightful. There may be a servo error input added to grblHAL in the future though there are plenty of ways to handle it now - 2 of which...
    3 replies | 322 view(s)
  • PhilB's Avatar
    12-30-2020, 10:41 PM
    This sensor is very sensitive to the pull-up value. You should probably start there. I had one that never did work with a T4.0 but would with a T2.0. I later managed to kill the sensor and the replacement worked...
    11 replies | 246 view(s)
  • PhilB's Avatar
    12-22-2020, 06:56 PM
    Well, for free is a bit of a come-on. There will be engineering fees, a lot of parts have a min order count and smaller SMD parts have "attrition" (think of it as the number of parts wasted loading the tape on their...
    58 replies | 1670 view(s)
  • PhilB's Avatar
    12-19-2020, 04:48 PM
    JLCPCB has ESP-07s and ESP-12S in their library and, surprise, in stock. They also have a bunch of Espressif modules (and in stock, too!). This looks to be a fairly recent addition. We'll see how well they maintain...
    23 replies | 615 view(s)
  • PhilB's Avatar
    12-18-2020, 09:37 PM
    Not wanting to push the Chinese disti LCSC.com but they have ESP-01, ESP-07, ESP-07S, ESP-12E, ESP-12F for good prices and volume discounts. You can get them via DHL or UPS for quick delivery - typically 5ish days to...
    23 replies | 615 view(s)
  • PhilB's Avatar
    12-18-2020, 03:57 PM
    LCSC has a number of modules. Generally in the $1-$3 range.
    23 replies | 615 view(s)
  • PhilB's Avatar
    12-18-2020, 06:07 AM
    grblHAL is an open source motion control system for CNC machines like mills, router, lathes, laser cutters and anything that uses stepper motors or servos. It is the 32-bit version of Grbl that originally ran on 8-bit...
    3 replies | 322 view(s)
  • PhilB's Avatar
    12-16-2020, 10:59 PM
    For a low current, it works well. The spec say 200 mA though I would stay well below that - 100 to 150 max. Probably ok for this application.
    58 replies | 1670 view(s)
  • PhilB's Avatar
    12-14-2020, 06:23 PM
    JLCPCB capabilities - https://jlcpcb.com/capabilities/Capabilities They do 5 mil traces and .2/.45 vias. I've used them quite a bit for both 2L and 4L boards. If you can use them, their 4L boards are much...
    58 replies | 1670 view(s)
  • PhilB's Avatar
    11-27-2020, 07:23 PM
    I am measuring the max rate that a stepper motor is driven at. Because steppers require acceleration and deceleration for best performance, the train of pulses does not have a fixed period. It was getting tedious to...
    0 replies | 119 view(s)
  • PhilB's Avatar
    11-24-2020, 07:01 PM
    Well, all the controllers on that list are based on the old 8-bit Arduino design and only support 3 Axes. Also, a lot of them don't have any isolation or noise control so EMI can cause problems like controller reset...
    31 replies | 3557 view(s)
  • PhilB's Avatar
    11-22-2020, 08:42 PM
    As long as you are looking at headers, It would be great to find 2x3 2mm header+socket for the teensy 4.1 that works with the the 2.54mm pitch sockets. I've had real trouble finding ones that work together. The 2mm...
    28 replies | 1166 view(s)
  • PhilB's Avatar
    11-22-2020, 03:59 PM
    Thank god this was a false alarm. The last thing I need is to deal with is customers not getting their stuff working because of counterfeit teensys.
    11 replies | 619 view(s)
  • PhilB's Avatar
    11-22-2020, 12:21 AM
    OK, that was good for a laugh. Over at EEVBlog there are several long threads about the Blue Pill Problem including some decapped STM32F103 showing that they weren't made by STMicro. I think they identified something...
    28 replies | 1166 view(s)
  • PhilB's Avatar
    11-21-2020, 11:15 PM
    FedEX says delivery on Tuesday 11/24. However, I have another package (unrelated) that arrived at Memphis within 20 minutes (probably on the same plane) of the Boards and they are saying that will be delivered on...
    30 replies | 3088 view(s)
  • PhilB's Avatar
    11-21-2020, 11:01 PM
    Amen to that. That's one of the reasons I based my CNC board on the T41. Another is that, unlike the BluePills and such out there, it is a totally consistent package. If you buy a BluePill today, you probably won't...
    28 replies | 1166 view(s)
  • PhilB's Avatar
    11-21-2020, 05:51 PM
    Welcome! It's good to have another WA company building on Teensys. Looked at your store and see at least one Unicorn - reasonably priced 1x24 pin sockets! I usually just cut down 1x40s and hide the ugly end.
    28 replies | 1166 view(s)
  • PhilB's Avatar
    11-20-2020, 05:08 PM
    I will post a message here when I know exact timing of the first delivery. Tindie waitlist is just for notifications, orders will be fulfilled FIFO.
    30 replies | 3088 view(s)
  • PhilB's Avatar
    11-20-2020, 05:00 PM
    I am out of stock right now but have a batch arriving in the next couple of days. And another batch is coming after that. Demand has been increasing and the Hackaday article was a bit of a tidal wave but I am committed...
    30 replies | 3088 view(s)
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