Zootalaws

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  • January 4, 2018 at 8:47 pm in reply to: HeatSinks #10722
    Zootalaws
    Member

    The first question I have to ask is; are you experiencing overheating?

    If not, why are you looking to add cooling?; if so, what conditions are you overheating in?

    I live on the equator, my workshop starts off at around 32C in the morning and I don’t experience overheating with my big NEMA23 motors.

    Sometimes what looks like overheating is too little current at the trim pot – have you tuned your trims?

    December 20, 2017 at 10:13 pm in reply to: control fan speed #10706
    Zootalaws
    Member

    You can reduce the speed using a purpose built case fan speed controller or by reducing the voltage down – a half-watt resistor (or a couple of quarter watt in parallel) will do it.

    A 50 ohm resistor would be a good place to start. Make sure you monitor how warm the resistor(s) get for the first few minutes until you’re sure it’s not going to burst into flames.

    https://www.newegg.com/Product/Product.aspx?Item=9SIA85V3SU6396&cm_re=fan_speed_controllers-_-35-118-217-_-Product

    December 16, 2017 at 11:42 pm in reply to: Bluetooth Serial Dongle? #10704
    Zootalaws
    Member

    Many years down the track…

    I am currently implementing 2.4GHz WiFi connection to enable Chilipeppr / Serial comms via an ESP8266 or ESP32-based wireless serial bridge, if anyone is interested. If it’s already been done, let me know and I’ll cease development.

    The specific product I’m using is a WeMos D1 mini, but I have a bunch of old esp chips of various vintages around that, once I have the solution nailed, will try out in case there are any variances.

    The nice part is that the TinyG provides more than enough power through the 3.3V output at the serial connector to power the thing and it’s easy enough to blob it on to the top of the USB connector with a spot of hot-glue if you are comfortable with bush finish 🙂 Of course I will end up soldering it properly with a protoboard and mounting it with PCB offsets (cough)…

    February 26, 2017 at 3:55 pm in reply to: Arcs incorrect #10285
    Zootalaws
    Member

    That looks like one axis is calibrated wrong.

    So, a move +2 x units, for example, is only moving +1.5, while Y is moving +2

    Have you calibrated each axis?

    February 26, 2017 at 12:58 am in reply to: Motors make noise, no movement #10279
    Zootalaws
    Member

    In my experience, if your motors are energising and cannot be turned, but just make a buzzing noise, it’s because your output power is too low.

    Just as an experiment, turn the adjuster to its furthest point. It won’t hurt as your motors aren’t driving a load.

    There is a way of adjusting output power using a multimeter, but I’m on my phone and can’t be arsed to look for it right now

    PS, it could also be incorrect wiring – worth checking the spec sheet for your motors against your wiring.

    • This reply was modified 7 years, 11 months ago by Zootalaws.
    January 13, 2017 at 4:50 pm in reply to: Two motors attached to a single stepper output #10173
    Zootalaws
    Member

    You can also add a second driver and motor.

    Just take the signal feeds and get your power from your transformer.

    Same signal, so in lock-step, dual power so no overloading of the Tiny and full power to the steppers rather than half. Still need to reverse the power for one motor manually.

    You can balance the motors quite easily by coupling them (a piece of plastic tubing works). By utilising the brake on one motor, have the other step in 1:1 single step increments, if it’s unable to overcome the braked motor, adjust the power until it can, then reverse your test. It’s crude but reasonably accurate.

    • This reply was modified 8 years ago by Zootalaws.
    December 21, 2016 at 12:25 am in reply to: TinyG Motor/LED Cutout #10118
    Zootalaws
    Member

    Can you use a different method than chilipeppr and get the same result?

    If you connect through a serial comma programme (coolterm, etc.) what response do you get when you jog?

    If you connect a different motor to axis 4, does it work ok?

    December 20, 2016 at 4:13 am in reply to: TinyG Fan max current #10112
    Zootalaws
    Member

    What current does the fan you have draw?

    December 19, 2016 at 7:45 pm in reply to: Looking for bootloader commands to update FW #10108
    Zootalaws
    Member

    If you issue the command ‘upgrade tinyg firmware’ into google using your web browser, it should return a result pointing to a webpage “TinyG Updating Firmware” – go and have a look at that, it’s quite useful, as is “TinyG Boot Loader”

    • This reply was modified 8 years, 1 month ago by Zootalaws.
    December 17, 2016 at 1:25 am in reply to: 2nd TinyG and X limit switch input and SpON not working?! #10101
    Zootalaws
    Member

    You could just use a simple contact switch just to get you going – get a length of shielded twisted pair Ethernet cable (cheap as buggery) to run and you should be fine for interference.

    I started with cheap contact switches from a stripped-down 3D printer and never replaced them, because they worked fine and never glitched. I bought a bunch of optical switches – they’re still in their packet, unopened.

    And before you blow up another Tiny, make an opto-electrical isolation board to run all of your external voltages through. 🙂 #hindsightoftheboltedhorse

    • This reply was modified 8 years, 1 month ago by Zootalaws.
    • This reply was modified 8 years, 1 month ago by Zootalaws.
    December 17, 2016 at 1:18 am in reply to: Text Verbosity and other commands #10100
    Zootalaws
    Member

    Plus one on both CoolTerm and Chilipeppr.

    Teraterm is what we use at work, but anyone that can get away with it loads CoolTerm: http://freeware.the-meiers.org

    Maybe one thing to look at is whether you have modified TeraTerm in any way from stock – given that we aren’t seeing the problem you are seeing, it’s much more likely to be your local environment than hard-coded firmware.

    And Chilipeppr is just so cool anyway 🙂 worth it just for the buzz!

    December 16, 2016 at 1:49 pm in reply to: Text Verbosity and other commands #10096
    Zootalaws
    Member

    I’m not sure what you mean by ‘two prompts’, can you elaborate?

    This page explains all the commands in some detail, including $tv : https://github.com/synthetos/TinyG/wiki/TinyG-Configuration-for-Firmware-Version-0.97

    Do you require more detail on a specific command, other than $tv – which is simply to turn verbosity on and off, or… how much info is returned from a command: abbreviated or full message.

    Enter a command with it turned off and then turned on and you can see the difference

    • This reply was modified 8 years, 1 month ago by Zootalaws.
    December 16, 2016 at 12:14 pm in reply to: Text Verbosity and other commands #10094
    Zootalaws
    Member

    Have you looked at the documentation on the GitHub pages?

    https://github.com/synthetos/TinyG/wiki/Gcode-Support

    December 13, 2016 at 5:57 am in reply to: TinyG2 pinout diagram questions #10076
    Zootalaws
    Member

    M1vref is motor 1 voltage reference, used for tuning your motor power,

    M2ms0’is motor 2 microstepping pin 0
    M4ms1 is motor 4 microstepping pin 1

    microstepping is set in binary, so pin 0 + pin1:

    00 – 0
    01 – 1
    10 – 2
    11 – 3

    December 11, 2016 at 9:49 pm in reply to: 2nd TinyG and X limit switch input and SpON not working?! #10069
    Zootalaws
    Member

    Dr:bs

    • This reply was modified 8 years, 1 month ago by Zootalaws.
    • This reply was modified 8 years, 1 month ago by Zootalaws.
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