Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Development, Learning, Evaluation & Industrial Control Boards |
| Origin | - |
| Chipset | ESP8266EX / ESP8285 |
| Operating Voltage | 3.0V - 3.6V |
| Wi-Fi Standard | 802.11 b/g/n |
| Interface | UART / GPIO |
| Flash Memory | 1MB (ESP-01S) |
| Antenna Type | PCB Onboard Antenna |
| Dimensions | 14.3mm x 24.8mm |
| Pin Count | 8 Pins |
| Current Consumption | ~70mA (Transmitting) |
| Supported Modes | Station, AP, Station+AP |
Anonymous
Mar 27, 2026
Rating: 5/5
Perfect for IoT prototypes
These modules are incredibly reliable for my home automation projects. The ESP-01S version with the extra flash memory makes flashing firmware much smoother. Great value for the price.
Anonymous
Mar 15, 2026
Rating: 4/5
Good but needs a converter
The module works great once you get it set up. Just remember you need a 3.3V USB-to-TTL converter; do not connect directly to 5V or it might get damaged. Instructions could be clearer for beginners.
Anonymous
Mar 15, 2026
Rating: 3/5
Inconsistent batch quality
Most of the modules in my order worked fine, but two out of ten failed to enter programming mode. When they work, they are excellent, but quality control seems slightly variable.
Anonymous
Mar 12, 2026
Rating: 5/5
Compact and powerful
I've used dozens of these in various sensor nodes. They hold a stable Wi-Fi connection and the small form factor fits easily into tight enclosures. Highly recommended for embedded systems.
Anonymous
Mar 08, 2026
Rating: 4/5
Solid performance
Works exactly as described. Setup with the Arduino IDE was straightforward. The only downside is the limited number of GPIO pins available on this specific footprint.
Anonymous
Mar 05, 2026
Rating: 5/5
Best budget Wi-Fi solution
Unbeatable price point for adding Wi-Fi capabilities to Arduino or standalone projects. The community support is huge, so finding code examples is very easy.
Q: What is the difference between ESP-01 and ESP-01S?
A: The main difference is the flash memory size. The ESP-01 typically has 512KB, while the ESP-01S has 1MB, allowing for larger firmware sketches and OTA updates.
Q: What is the maximum transmission range indoors?
A: Range depends heavily on environmental obstacles and interference. Typically, you can expect 20 to 40 meters indoors in an open office environment, less through concrete walls.
Q: Is MicroPython supported on this board?
A: Yes, the ESP8266 chipset fully supports MicroPython. You can flash the firmware using esptool.py and start coding in Python immediately.
Q: Does this come with headers soldered on?
A: No, these modules usually ship without headers to keep the profile low for custom PCB integration. You will need to solder your own pin headers if required.
Q: Can this module be powered directly by a 5V Arduino pin?
A: No, the ESP8266 operates at 3.3V. Supplying 5V directly can damage the chip. You should use a voltage regulator or a dedicated 3.3V power source.
Sink Drain Rack Corner Hanging Basket - Kitchen Sponge and Cloth Organizer, Multi-Function Home Storage Solution
$13.73
Magnetic Refrigerator Side Storage Rack - No-Drill Wall Organizer for Spices and Utensils
$9.10
Multi-Function Car Tire Stone Removal Hook Tool for Picking and Digging Out Debris
$7.35
Suction Cup Sink Strainer - Disposable Kitchen Drain Filter for Food Scraps and Waste
$14.30
Kimberly-Clark Wiper Paper, Industrial Cleaning Wipes for Oil and Grease, Factory & Laboratory Use
$963.52
Loose Gold Rutilated Quartz Beads, Donghai Agate, Chalcedony, Jade, Cat's Eye, Titanium Crystal, Aquamarine, White and Yellow Crystal Single Beads for Bracelets
$8.42
Faucet Drain Mat, Non-Slip Countertop Pad for Kitchen and Bathroom, Splash-Proof Sink Organizer, Thickened Mold-Resistant Silicone Mat
$3.78
New Pirelli Tire 255/40R20 101W AO PZERO PZ4 with Silent Cotton Original Fit for Audi A6L
$1,358.00
Oriental Pearl Dual Porcelain Jar Gift Set: Green Tea, Black Tea, Jin Jun Mei, Pu'erh Loose Leaf Tea in Porcelain Jars
$149.00
Purified Water Bucket Stand Inverted Water Dispenser Pump Simple Mineral Water Drinking Machine Press Pump
$10.80
New Children's Gouache Paint Brushes DIY Hand-Painted Graffiti Art Class Watercolor Acrylic Paint Brushes Bristle Round Tip Brush
$6.41
Natural Clear Quartz Fully Clean Untreated Faceted Round Rice Beads - For Women's Bracelets, Spacer Beads, and DIY Crafts
$6.63
Sponge Brushes for Kids' Crafts and Creative Painting - Student Art Stamping Tools, DIY Sponge Paintbrushes
$13.86
Jiuchenggong Liquan Ming Tang Dynasty Ouyang Xun Yao Mengqi Copybook, Regular Script Brush Calligraphy Workbook, 3 Volumes, 188 Pages
$17.90
Shaped Watercolor Paper Ticket Stubs - Blank Postage Stamp Bookmarks with Serrated Edges, Thickened 300g Premium Cotton Pulp, Fine Texture for Art Hand Painting, Easy Blending, High Absorbency, Wrinkle-Resistant - Perfect for Postcards and Creative Cards
$9.85
Naitong Automatic Retractable Air Hose Reel with PU Braided Hose for Pneumatic Tools and Car Detailing
$119.00
Premium Wall-Mounted Aromatherapy Empty Bottle – 100ML Plastic Square Diffuser Bottle with Wall-Mount Adhesive Sticker
$2.98
Leyingfang Floating Pen for Kids' Water Drawing, Colorful Water-Soluble Suspended Markers, Erasable Watercolor Pens
$13.80
Loose Rose Quartz Beads, Donghai Agate, Chalcedony, Jadeite, and Madagascar Pink Crystal for DIY Jewelry Making
$6.72
Expandable Stainless Steel Sink Rack, Multi-Function Kitchen Drain Board for Fruits, Vegetables, and Utensils
$14.90
Transparent Retainer Case Aligner Storage Box Portable Carry-On Squeeze Bag Orthodontic Appliance Rubber Band Cleaning Box
$18.50
Transparent Data Cable Organizer Bag for Travel - Portable Multi-Use Visible Storage for Digital Chargers and Cable Management
$7.36
Finished Seal Calligraphy Finished Stone Stamp Sellos Chines
$108.58
Chunfei Grocery Store Commuter Hard Fork Low-Beam Mountain Bike for Urban Roads, Suburbs, School, and Outings
$2,247.00
6-Cavity Large Square French Flower DIY Soap Silicone Mold for Essential Oil and Milk Soap
$4.93
Home Balcony Vegetable Planter - Self-Watering Plastic Pot for Strawberries and Succulents
$28.00
Pressure Swing Adsorption Nitrogen Generator - High-Purity Nitrogen Device for Heat Treatment
$36,456.00
6-Cavity 3D Rose Silicone Mold for DIY Soap Making Heat-Resistant Non-Stick Large Size for Milk Soap and Essential Oil Soap
$5.80
Traditional Handmade Baby Teething Rattle Sheepskin Wooden Clapper Newborn Toy Intangible Cultural Heritage
$29.85
Manufacturer Supply ZSJC02 Film Splicing Table, Alignment Table, Film Inspection Table
$4,484.00
![[Youxin Electronics] GP2Y0E03 Infrared Distance Sensor Module 4-50cm Range](https://www.gosteppe.com/cache/medium/product/74667/legacy-main-4da8cadc5fc82afe91b124e3.webp)
![[Trial Pack] Xianlang Complete Cat Treat Sticks Meal Packs Main Course Cans Freeze-Dried Cat Food Sample Snacks Gift Set](https://www.gosteppe.com/cache/medium/product/208273/legacy-main-9ec245ebf781f65a434ba854.webp)
