a5:stepper-drivers
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| a5:stepper-drivers [2018/11/07 01:18] – [How to Upgrade Stepper Drivers to TMC2XXX (TMC2100, TMC2130, TMC2208)] red_m | a5:stepper-drivers [2018/11/25 03:58] – samuelpinches | ||
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| ====== Tuning & Upgrading the Stepper Drivers ====== | ====== Tuning & Upgrading the Stepper Drivers ====== | ||
| - | The A5 and A3S printers use a MKS GEN L motherboard, | + | The A5 and A3S printers use a MKS GEN L motherboard, |
| The stepper drivers must be set to the correct power level, to ensure the right amount of power is provided for the motor size being used. On each stepper driver, there is a small variable potentiometer (resistor) that sets a reference voltage to tell the driver how much current to deliver to the motor. This potentiometer can be turned with a small screwdriver. | The stepper drivers must be set to the correct power level, to ensure the right amount of power is provided for the motor size being used. On each stepper driver, there is a small variable potentiometer (resistor) that sets a reference voltage to tell the driver how much current to deliver to the motor. This potentiometer can be turned with a small screwdriver. | ||
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| The reference voltage, or VREF, can be measured with a multimeter from the metal potentiometer top, to a ground point on the motherboard. The maximum VREF that a stepper driver is rated for, is typically determined when using a heatsink that is cooled by a fan. In the JGAurora A5 and A3S, there is no internal active cooling inside the main chassis, so care must be taken to avoid the drivers overheating. When stepper drivers overheat, they are not usually damaged, but they will auto-shut down until their temperature drops back down to a suitable working level. | The reference voltage, or VREF, can be measured with a multimeter from the metal potentiometer top, to a ground point on the motherboard. The maximum VREF that a stepper driver is rated for, is typically determined when using a heatsink that is cooled by a fan. In the JGAurora A5 and A3S, there is no internal active cooling inside the main chassis, so care must be taken to avoid the drivers overheating. When stepper drivers overheat, they are not usually damaged, but they will auto-shut down until their temperature drops back down to a suitable working level. | ||
| - | Different models of stepper driver, have different maximum current ratings. To work out the current output, each stepper driver also has a specific formula that allows the output current to be calculated from the reference voltage. | + | Different models of stepper driver, have different maximum current ratings. To work out the current output, each stepper driver also has a specific formula that allows the output current to be calculated from the reference voltage. |
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| * E = 0.55 - 0.6V | * E = 0.55 - 0.6V | ||
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| - | ===== How to Upgrade Stepper Drivers to TMC2XXX (TMC2100, TMC2130, TMC2208) ===== | ||
| - | There are two excellent videos by [[https:// | ||
| - | * Watch Part 1 Here: [[https:// | ||
| - | * Watch Part 2 Here: [[https:// | ||
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| - | < | ||
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| - | **There is also a NEW tutorial for [[a5: | ||
| ====Tuning TMC2XXX Stepper Drivers==== | ====Tuning TMC2XXX Stepper Drivers==== | ||
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| - | + | Good info on tune vref for tmc2130 on the voron page [[https:// | |
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| - | ---- | + | |
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| - | === TMC 2208 === | + | |
| - | [[a5:silent-stepper-driver-tmc2208|See this.]] | + | |
| - | + | ||
| - | ---- | + | |
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| - | ==== TODO: Work in progress .... ===== | + | |
| TODO - good discussion [[https:// | TODO - good discussion [[https:// | ||
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| - | Good info on tune vref for tmc2130 on the voron page [[https:// | ||
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| - | Several different | ||
| - | **[TODO...] | ||
| - | ** | ||
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| - | Types | ||
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| - | A4988, DRV8825, TMC21XX, TMC2208, THB8128, others | ||
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| - | Pros/Cons | ||
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| - | Tuning stepper driver current, Vref etc | ||
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| - | Microstepping & jumpers | ||
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| - | Changing firmware steps/mm, changing active high/low | ||
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| - | TL Smoother & Salmon Skin | ||
a5/stepper-drivers.txt · Last modified: 2020/12/25 02:13 by 127.0.0.1
