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Характеристики
5pcs ST820 Stepper Motor Driver Stepstick Smallest 45V 256 Microstepping Peak 2.5A RAMPS Based on STSPIN820 for 3d printer parts |
История изменения цены
*Текущая стоимость US $15.99 - 32.99 / lot уже могла изменится. Что бы узнать актуальную цену и проверить наличие товара, нажмите "Добавить в корзину"
| Месяц | Минимальная цена | Макс. стоимость | Цена |
|---|---|---|---|
| Aug-19-2025 | 19.72 руб. | 19.61 руб. | 19 руб. |
| Jul-19-2025 | 15.48 руб. | 15.39 руб. | 15 руб. |
| Jun-19-2025 | 19.83 руб. | 19.3 руб. | 19 руб. |
| May-19-2025 | 19.47 руб. | 19.53 руб. | 19 руб. |
| Apr-19-2025 | 15.68 руб. | 15.9 руб. | 15 руб. |
| Mar-19-2025 | 18.52 руб. | 18.45 руб. | 18 руб. |
| Feb-19-2025 | 18.12 руб. | 18.11 руб. | 18 руб. |
| Jan-19-2025 | 18.91 руб. | 18.45 руб. | 18 руб. |
Описание товара
Product Introduction: ST820 is a compact and easy to use evaluation board for the STSPIN820, the world's smallest 45 V microstepping motor driver rated at 2.5 A.It provides a very compact solution to evaluate the performance of the STSPIN820 stepper motor driver with a minimum set of additional equipment and without the need of additional devices. The hardware is fully compatible to be used together with RAMPS or other similar FFF 3D printing platforms, representing a very fast drop-in replacement of similar solutions. Contrary to most other competitors solutions, it helps customers to really exploit the benefits of working at high microstepping resolution. The microstepping resolution can be easily set to one of eight available values through M1, M2 and M3 inputs: full-step, 1/2, 1/4, 1/8, 1/16, 1/32, 1/128 and 1/256 of step. It is simply controlled through step and direction ports and embeds the PWM current control algorithm with selectable decay mode (fast + slow or slow) and the adjustable reference voltage level through an embedded potentiometer. The STSPIN820 features a full set of protections making it a bullet proof device for a wide range of industrial applications.Major Features :Operating voltage: 7 V to 45 VContinuous current up to 1.5 A per phaseMaximum current up to 2.5 A per phase Integrated low RDS(ON) power stages (HS + LS = 1 Ω typ.)Microstep resolution easily settable through jumpers: full-step, 1/2, 1/4, 1/8, 1/16, 1/32, 1/128 and 1/256 of step Simple step and direction control interfaceAdjustable current control through a potentiometer to set the ref. voltagesEmbedded PWM current control with selectable decay mode (fast or slow)Full set of embedded protections1. Non-dissipative overcurrent2. Undervoltage lockout3. Thermal shutdown4. Short-circuitCompatible with RAMPS and similar open source solutions for FFF 3D printersVery compact footprint: 15 x 20 mm
(1) Minimum current could be present due to the PWM current control operation
(2) The overcurrent protection of the STSPIN820 could limit the actual peak current
Modify the peak current range
The trimmer can be adjusted by modifying some board components.
In particular the components contributing to the definition of the peak current are:
• Both the sensing resistors
• Pull-up resistor (R6 = 39K)
• Sensing resistor (R8 and R9 = 0.15R)
The detailed formula is the following:
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Changing the sensing resistors requires particular attention:
• Bust the sensing resistors must have the same value
• Power dissipation on the resistors is equal to Ipeak2 × Rsense. The power rating must be selected accordingly.
Note
Warning! Some of the components mounted on the board could reach hazardous temperatures during operation.
While using the board, please adhere to the following precautions:
-
Do not touch the components
-
Do not cover the board
-
Do not put the board in contact with flammable materials of with materials releasing smoke when heated
After operation, allow the board to cool down before touching it.
Packaging List: 2/5pcs set ST820
Setting the step mode
The inputs MS0, MS1 and MS2 sets the step mode of the STSPIN820 driver as listed in the table below.
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