ESP32-C3 Custom SMD PCB Badge Kit with ESP32 + LED
Reflow Solder Your Own ESP32-C3 Badge with SMD Components and OLED Display
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
Transform a blank credit-card sized PCB into a fully functional wearable ESP32-C3 badge with a crisp OLED display and rechargeable LiPo power. This kit is built as your first deep-dive into surface-mount soldering — where you'll master applying solder paste and reflowing components as small as 0402, using the included hot air rework station.
What You'll Build
You'll assemble an 85×54 mm custom PCB hosting an ESP32-C3 SOC, 20 bypass capacitors, 10 pull-up resistors, an OLED screen, and a USB-rechargeable battery circuit — all professionally reflow-soldered by you. The badge becomes a programmable device for displaying custom messages, sensor data, or IoT connectivity.
What You'll Learn
- Apply solder paste accurately onto SMD pads using a stencil
- Reflow-solder QFN-packaged ESP32-C3 and SOT-23 charger IC with hot air
- Position and solder 0402 passive components without tombstoning
- Inspect and rework joints under magnification for reliable function
Kit Contents
| Component | Quantity |
|---|---|
| ESP32-C3 SMD Chip | 1 |
| 0402 100nF Capacitor | 20 |
| 0402 10kΩ Resistor | 10 |
| 0.96in OLED Display | 1 |
| 3.7V LiPo Battery 150mAh | 1 |
| TP4056 SOT-23 Charger IC | 1 |
| Custom PCB 85x54mm | 1 |
| Solder Paste Syringe | 1 |
| Hot Air Rework Station | 1 |
Why Buy This Kit Instead of Sourcing Parts Separately
| Factor | Sourcing Separately | Compoden Kit |
|---|---|---|
| Compatibility checks | You verify every part | Pre-tested as a system |
| Build support | Forums and scattered tutorials | AI companion trained on this exact project |
| Time to first working build | Days of debugging | Hours, with step-by-step guidance |
| Shipping coordination | Multiple sellers, multiple delays | One shipment from Bengaluru in 3-5 days |
Who This Kit Is For
This kit is designed for B.Tech ECE and EEE students who want to build a professional SMD project, participants of Smart India Hackathon wanting to create a custom badge, and IEEE or robotics club members transitioning from breadboard to compact surface-mount designs. It assumes basic soldering experience and readiness for the precision of 0402 rework.
Built and Backed by Compoden
Every Compoden kit ships with an AI build companion trained on this exact project — accessible via a QR code on the box, with WhatsApp and email backup. We've spent 10 years building projects for makers, schools, and institutions across India. If a part fails because of a manufacturing defect, replace it free within 7 days.
What if I get stuck during the build?
Scan the QR code on the box to access the AI build companion trained for this kit, or reach us on WhatsApp for a human mentor.
Do I need a microscope for 0402 components?
We strongly recommend a simple USB microscope or a magnifying visor for inspecting solder joints. The kit is designed with close pad clearances that benefit from 10x magnification.
How do I program the ESP32-C3 after building?
Once assembled, connect the USB-C port to your computer and use Arduino IDE or ESP-IDF. Our companion provides sample code to test the OLED and Wi-Fi.
What if a 0402 component flies away during handling?
We include extra passives beyond the required count, so you have spares. Work on a dark, clean surface to spot dropped parts easily.
Reflow solders ESP32-C3 SMD chip, 0402 passives and OLED on a credit-card PCB. First SMD soldering project.
What's in this kit
- ESP32-C3 SMD Chip
- 0402 100nF Caps x20
- 0402 10kΩ Resistors x10
- 0.96in OLED
- 3.7V LiPo 150mAh
- TP4056 SOT-23
- Custom PCB 85x54mm
- Solder Paste
- Hot Air Rework Station
Choose your assembly option:
- Soldering Kit — 25W soldering iron, 60/40 solder wire, flux, and small perfboard for permanent assembly.
- Breadboard Combo — 800-point full-size breadboard with 65-piece jumper wire pack for solderless prototyping.
Shipping Information
- Prepaid Orders: ₹75 for orders up to ₹999, FREE shipping above ₹999
- COD Orders: ₹125 shipping + ₹50 COD fee = ₹175 total
- Delivery Timeline: Dispatch in 1-2 days, delivery in 2-7 days depending on location
Returns & Warranty
- 7-Day Return: Manufacturing defects only (approval required)
- Warranty: 7 days from delivery
- Non-Returnable: Batteries, consumables, cut wires, clearance items