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  • PhilB's Avatar
    01-26-2021, 04:31 PM
    Are you sharing your code? Got a github site? Though, 80 mm/s (4800 mm/min) is not very fast. For lasers, 70K mm/min has been achieved with a stock T4.1 running grblHAL, according to the developer. By the way,...
    34 replies | 3885 view(s)
  • PhilB's Avatar
    01-23-2021, 07:42 PM
    I have had a background project like this for a while now (ie, lots of thinking, not much doing). One question that comes up, why use ADC at all? Why not a simple envelope detector (like here) for each microphone into...
    24 replies | 1252 view(s)
  • PhilB's Avatar
    01-23-2021, 06:55 AM
    I've run into that. It is a candidate for the worst error message ever. Developer wall of shame material. Easy fix though the error message does absolutely nothing to point you in the right direction. When using the...
    6 replies | 478 view(s)
  • PhilB's Avatar
    01-22-2021, 05:58 PM
    PhilB replied to a thread Raspberry Pi Pico in General Discussion
    And people still use 8-bit 16 MHz Arduino Nanos by the boat load. If you are just shopping on price then the Black and Blue Pills are what you should be using. Race to the bottom, Bro. However, the Pills are highly...
    129 replies | 4065 view(s)
  • PhilB's Avatar
    01-21-2021, 07:40 PM
    PhilB replied to a thread Raspberry Pi Pico in General Discussion
    SFE will sell you 100 at $4/each
    129 replies | 4065 view(s)
  • PhilB's Avatar
    01-21-2021, 07:02 PM
    PhilB replied to a thread Raspberry Pi Pico in General Discussion
    Like everyone else I have been wasting the morning grubbing though the Pico docs and ordering (and pre-ordering) various bits and pieces. Early impressions: Dual M0s - meh. Real Documentation! It's kind of a "Green...
    129 replies | 4065 view(s)
  • PhilB's Avatar
    01-20-2021, 03:31 PM
    It is a digital equivalent of a "potentiometer". The encoder library will tell you which direction and how many pulses (think clicks) it was turned. You get to do the rest. By the way, if you want impressive looking,...
    4 replies | 135 view(s)
  • PhilB's Avatar
    01-20-2021, 05:47 AM
    Those look like just switches to me, no electronics. They will run fine on 3.3V.
    4 replies | 135 view(s)
  • PhilB's Avatar
    01-17-2021, 12:22 AM
    OK, I though you were referring to the stepper driver carrier board.
    58 replies | 1992 view(s)
  • PhilB's Avatar
    01-16-2021, 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 | 1992 view(s)
  • PhilB's Avatar
    01-16-2021, 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 | 1992 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...
    6 replies | 478 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 | 329 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 | 1992 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 | 676 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 | 676 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 | 676 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...
    6 replies | 478 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 | 1992 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 | 1992 view(s)
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