A few questions before I start building one

This topic contains 87 replies, has 6 voices, and was last updated by  gera229 4 years, 10 months ago.

Viewing 15 posts - 46 through 60 (of 88 total)
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  • #4030

    gera229
    Participant

    Ok, I was thinking about using those metal screws that have threads inside them. Like the ones used on computer motherboards. Will that work?

    #4031

    Chris
    Keymaster

    Yup, threaded metal standoffs will work fine too.

    #4094

    Chris
    Keymaster

    Yup, threaded metal standoffs will work fine too.

    #4032

    gera229
    Participant

    I’m going to start assembling my PCB soon and since I have no soldering experience on PCBs I wanted to ask, did you guys use flux and/or have to ever desolder?

    Do I need to coat the tip with any solder such as tin before attempting to solder to prevent rusting (although I don’t how big of a deal this is as I have not enough experience). Did you do it?

    I’m going to use Rosin Core like it says in the instruction manual and this iron:

    http://www.amazon.com/Weller-WLC100-40-Watt-Soldering-Station/dp/B000AS28UC

    #4095

    gera229
    Participant

    I’m going to start assembling my PCB soon and since I have no soldering experience on PCBs I wanted to ask, did you guys use flux and/or have to ever desolder?

    Do I need to coat the tip with any solder such as tin before attempting to solder to prevent rusting (although I don’t how big of a deal this is as I have not enough experience). Did you do it?

    I’m going to use Rosin Core like it says in the instruction manual and this iron:

    http://www.amazon.com/Weller-WLC100-40-Watt-Soldering-Station/dp/B000AS28UC

    #4033

    Chris
    Keymaster

    gera229, you should not have to use flux, but keeping the tip of the iron clean is important. You can do this with a damp sponge ( most stations come with some sort of sponge receptacle) just wipe off the tip from time to time and re-tin as needed.

    Sine this is your first time, I would strongly recommend practicing on a small board first… maybe one of the cheap kits from radio shack. Remember to keep the tip clean, and be quick; you usually don’t want more than 4-5 seconds of heat application. Longer than that and you can sometimes damage components or just burn the pcb.

    As far as de-soldering, if you do everything exactly right you won’t need to de-solder, but I find myself having to do it every once in a while. In the past I’ve blown the motor driver chips on the hobbycnc board…those are not fun to replace. It’s probably a good idea to have a solder remover just in case.

    #4096

    Chris
    Keymaster

    gera229, you should not have to use flux, but keeping the tip of the iron clean is important. You can do this with a damp sponge ( most stations come with some sort of sponge receptacle) just wipe off the tip from time to time and re-tin as needed.

    Sine this is your first time, I would strongly recommend practicing on a small board first… maybe one of the cheap kits from radio shack. Remember to keep the tip clean, and be quick; you usually don’t want more than 4-5 seconds of heat application. Longer than that and you can sometimes damage components or just burn the pcb.

    As far as de-soldering, if you do everything exactly right you won’t need to de-solder, but I find myself having to do it every once in a while. In the past I’ve blown the motor driver chips on the hobbycnc board…those are not fun to replace. It’s probably a good idea to have a solder remover just in case.

    #4034

    gera229
    Participant

    Ok thanks. I will see if I can find old circuit boards to practice on.

    How did you blow the motor driver chips?

    Doesn’t the fuse provide overload protection?

    Or did you short (have 2 pins/wires touching each other) the circuit with solder?

    #4097

    gera229
    Participant

    Ok thanks. I will see if I can find old circuit boards to practice on.

    How did you blow the motor driver chips?

    Doesn’t the fuse provide overload protection?

    Or did you short (have 2 pins/wires touching each other) the circuit with solder?

    #4035

    Chris
    Keymaster

    gera229, I blew the chips once by accidentally shorting the board while doing some other repairs. I had the board detached from the case and it touched something metal. The HobbyCNC instructions do a pretty good job of warning you about this & other precautions to take, I was just being careless.

    #4098

    Chris
    Keymaster

    gera229, I blew the chips once by accidentally shorting the board while doing some other repairs. I had the board detached from the case and it touched something metal. The HobbyCNC instructions do a pretty good job of warning you about this & other precautions to take, I was just being careless.

    #4036

    gera229
    Participant

    What is your guy’s vref set at on the hobbycnc board? What current/ voltage?

    #4099

    gera229
    Participant

    What is your guy’s vref set at on the hobbycnc board? What current/ voltage?

    #4037

    gera229
    Participant

    Now that my board is assembled, I am still at the part of setting the vref before proceeding.

    But I was wondering, is it better to use a PS/2 keyboard and mouse with EMC2 or a USB one?

    What do you guys use?

    I will try to get one of the Pentium computers because I couldn’t find any cheap barebones similar to the D410 you linked to.

    So I chose a Dell according to the supported hardware list on the EMC website.

    When is the semester ending so that you can become more active here?

    Thanks.

    #4100

    gera229
    Participant

    Now that my board is assembled, I am still at the part of setting the vref before proceeding.

    But I was wondering, is it better to use a PS/2 keyboard and mouse with EMC2 or a USB one?

    What do you guys use?

    I will try to get one of the Pentium computers because I couldn’t find any cheap barebones similar to the D410 you linked to.

    So I chose a Dell according to the supported hardware list on the EMC website.

    When is the semester ending so that you can become more active here?

    Thanks.

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