EMC/EMI Checklist Before Your Board Goes to Certification
EMC testing is expensive, and failing it is worse than the test fee — it costs you a respin, a

Struggling to sell your ESP32 DIY boards, IoT gadgets, or custom electronics? What if you could turn those gathering-dust prototypes into profit—testing market demand risk-free and reaching engineers, hobbyists, and businesses globally—even without sales experience? Discover how to successfully monetize your hardware creations through top maker marketplaces. ESP32s.com solves the critical challenges every hardware creator faces.
❌ "I built something amazing but lack a store to sell it"
❌ "Platforms take 35% commissions + charge for storage"
❌ "Lack experience in logistics and marketing"
Monetize Your ESP32 & IoT Projects: Sell Risk-Free on Our Maker Marketplace. List products FREE. We handle warehousing, marketing & fulfillment – so you earn more.
Most platforms force you into lose-lose choices:
| Channel | Problem | Cost to You |
|---|---|---|
| E-commerce DIY | Complex tax/shipping setup | 15+ hours/month maintenance |
| General Marketplaces | Buried under cheap mass products | 30-45% commissions + listing fees |
| Direct Sales | No discoverability | Marketing costs > profits |
Since December 2016, ESP32s.com has partnered with hundreds of developers and businesses worldwide, turning their ESP32-based concepts into successful products. Located in Shenzhen, the heart of electronics manufacturing, we provide end-to-end solutions covering the entire ESP32 or IOT product lifecycle - from design and prototyping to full-scale production.
As an IOT & ESP32-focused marketplace, we eliminate the complexities of selling hardware. Unlike generic platforms, ESP32s.com provides integrated manufacturing, logistics, and marketing support at zero upfront cost — freeing you to focus solely on product innovation.
✅ Zero Upfront Fees: Free product listing and no monthly fees, free warehousing and free marketing
✅ Full-Cycle Manufacturing: From PCB design/prototyping to certified production
✅ Pre-Launch Demand Validation: Test market interest via pre-orders before manufacturing
✅ Global Logistics: Warehousing & worldwide shipping handled by us
✅ Guaranteed IP Protection: Your ownership secured by strict NDAs on all projects
✅ Dedicated Growth Support: One-to-One VIP Service
✅ Professional Marketing Exposure: Free product photography and featured promotions across our newsletter, social and community
✅ Direct Access to Electronics Buyers: Tap into 100,000+ monthly engineer visits, 10,000+ registered hardware developers, and 30+ certified electronics distributors globally.
Open to all hardware creators worldwide: College students, IoT hobbyists, ESP32 developers, startups, and electronics businesses.
Only requirement: Build IOT or ESP32-based products!
Contact us and send your OEM/ODM projects for a quotation
ESPC3-12E WIFI + Bluetooth Dual-Mode Module
$2.80
ESP32 ESP8266 Breakout Board GPIO 1 into 2 Compatible with 38 Pins ESP32S ESP32 Development Board 2.4 GHz Dual Core for Arduino
For XBee Explorer USB Mini Adapter Module Board Base Shield Multifunction FT232RL USB to TTL Serial Port Module
$3.50 – $3.90Price range: $3.50 through $3.90
5.83 Inch Black White Epaper Display
$23.50
ESP32 S3 MUMA AI Chat Robot Development Board with 1.54 inch LCD Display Screen WIFI&BT5 Type-c Port N16R8 DeepSeek AI
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