-15%
, , , , , , , , , ,

A4988 Stepper Motor Driver Controller Board


$ 1.08

🌟 Earn 9 Points with this purchase!
Compare

Ingredients Water, Glycerin, Myristic Acid, Stearic Acid, Potassium Hydroxide, Lauric Acid, Butylene Glycol, Glycol Distearate, Polysorbate 80, Sodium Methyl Cocoyl Taurate, Salicylic Acid, Cocamidopropyl Betaine, PEG-60 Hydrogenated Castor Oil, Fragrance, Sodium Chloride, Melaleuca Alternigolia (Tea Tree) Leaf Oil, Caprylyl Glycol, Ethylhexylglycerin, Salix Alba (Willow) Bark Water, Saccharomyces Ferment, Cryptomeria Japonica Leaf Extract, Nelumbo Nucifera Leaf Extract, Pinus Palustris Leaf Extract, Ulmus Davidiana Root Extract, Oenothera Biennis (Evening Primrose) Flower Extract, Pueraria Lobata Root Extract, 1,2-Hexanediol, Ethyl Hexanediol, Citric Acid, Disodium EDTA

Q: Can I use the COSRX Salicylic Acid Daily Gentle Cleanser every day? A: Yes, most skin types can use it twice daily. If your skin runs dry or sensitive, start with once a day in the evening and increase as your skin builds tolerance.

Q: Will this cleanser dry out my skin? A: The formula is designed not to strip the skin. Glycerin, cocamidopropyl betaine, and soothing botanical extracts help keep the skin’s barrier comfortable, so most people find it gentle enough for daily wash.

Q: Does the COSRX Salicylic Acid Daily Gentle Cleanser remove makeup? A: It lifts light makeup and sunscreen well, but for heavier makeup or waterproof SPF, we recommend using a dedicated oil cleanser or cleansing balm first, then following up with this BHA wash.

Q: Can I pair this with other BHA or retinol products? A: Yes, but ease in. Since it’s a rinse-off BHA, it generally layers fine with leave-on actives, but watch for dryness or irritation. Space out your strongest actives if your skin is reactive.

Q: Is it safe for pregnancy? A: Salicylic acid in low amounts in a rinse-off product is generally considered low-risk, but always consult your healthcare provider before adding any new active skincare during pregnancy or breastfeeding.

Step 1 – Cleanser: [This Product] – COSRX Salicylic Acid Daily Gentle Cleanser 150ml — Gently clears pores, sebum, and breakout triggers.

Step 2 – Toner: COSRX AHA/BHA Clarifying Treatment Toner — Layers more gentle exfoliation to smooth texture and refine pores.

Step 3 – Serum/Treatment: Anua Niacinamide 10% + TXA 4% Serum — Fades post-acne marks and brightens uneven tone left behind by breakouts.

Step 4 – Moisturizer: COSRX Advanced Snail 92 All In One Cream — A lightweight gel cream that hydrates and helps repair active-stressed skin.

Step 5 – Sunscreen (AM): Beauty of Joseon Relief Sun Aqua Fresh Rice + B5 SPF50+ PA++++ — Essential daily UV shield that won’t clog pores or feel heavy.

Customers Also Bought

  • COSRX Advanced Snail 96 Mucin Power Essence — A calming, hydrating essence that pairs beautifully with daily BHA use to keep skin plump and barrier-healthy.
  • COSRX Acne Pimple Master Patch — The perfect spot treatment for any breakout that slips past your cleansing routine.
  • Anua Heartleaf 77% Soothing Toner — Adds extra calming power to help reduce redness after cleansing.
ShareThe A4988 is a complete micro stepping motor driver with built-in translator for easy operation. It is designed to operate bipolar stepper motors in full-, half-, quarter-, eighth-, and sixteenth-step modes, with an output drive capacity of up to 35 V and ±2 A. The A4988 includes a fixed off-time current regulator which has the ability to operate in Slow or Mixed decay modes. The translator is the key to the easy implementation of the A4988. Simply inputting one pulse on the STEP input drives the motor one micro step. There are no phase sequence tables, high frequency control lines, or complex interfaces to program. The A4988 interface is an ideal fit for applications where a complex microprocessor is unavailable or is overburdened. During stepping operation, the chopping control in the A4988 automatically selects the current decay mode, Slow or Mixed. In Mixed decay mode, the device is set initially to a fast decay for a proportion of the fixed off-time, then to a slow decay for the remainder of the off-time. Mixed decay current control results in reduced audible motor noise, increased step accuracy, and reduced power dissipation. Internal synchronous rectification control circuitry is provided to improve power dissipation during PWM operation. Internal circuit protection includes: thermal shutdown with hysteresis, under voltage lockout (UVLO), and crossover-current protection. Special power-on sequencing is not required. The A4988 is supplied in a surface mount QFN package (ES), 5mm × 5 mm, with a nominal overall package height of 0.90 mm and an exposed pad for enhanced thermal dissipation. It is lead (Pb) free (suffix –T), with 100% matte tin plated lead frames. SPECIFICATIONS Suggested Match 3A004 Color Red Material Metal PCB Board Dimensions (mm) 41x 34x 11 Weight (gm) 10 FEATURES Compact size, easy to install and use. All jumpers hit the ON position to indicate 16 subdivisions (4988) or 32 subdivisions (8825). Jm connection motor; Jv Connects 5V and 12V-24V Power Supply. E /S /D /G of Jc corresponds to Enable /Step /Dir / Gnd driving signal output on the connection respectively. PAKAGE INCLUDES 1 x A4988 Stepper Motor Driver Controller Board- RED

Select at least 2 products
to compare