Annular ESP32 PCB Design
Budget: ₹1,500 – ₹12,500 INR
I’m building a two-layer, donut-shaped PCB around ESP32-WROOM-32U. The outer diameter must not exceed 92 mm, the inner cut-out must remain at least 54 mm, leaving the 19 mm wide ring as our only real estate. Please respect the antenna keep-out zone on the outer edge of the module.
Inside that narrow ring we still need to route: Quectel L80 GPS on UART, a MAX98357A audio amp over I²S, a DS3231 RTC on I²C, an SPI-driven MicroSD slot, and a single raw copper touch pad positioned on the perimeter. Power comes from a USB-C connector that sits on the edge; horizontal or vertical placement is fine as long as it follows the board outline and brings out both 5 V and a regulated 3.3 V rail.
You may work in EasyEDA or KiCad—either format is acceptable. Please apply the board house’s standard design rules so the file set uploads and clears JLCPCB’s automated DFM check on the first pass.
Deliverables required to finish the job:
• Editable CAD source files
• Manufacturing-ready Gerber ZIP with NC drill
• Complete BOM with manufacturer part numbers
• Pick-and-Place file for assembly
Once those files load cleanly at the fabricator, the project is considered complete.
Inside that narrow ring we still need to route: Quectel L80 GPS on UART, a MAX98357A audio amp over I²S, a DS3231 RTC on I²C, an SPI-driven MicroSD slot, and a single raw copper touch pad positioned on the perimeter. Power comes from a USB-C connector that sits on the edge; horizontal or vertical placement is fine as long as it follows the board outline and brings out both 5 V and a regulated 3.3 V rail.
You may work in EasyEDA or KiCad—either format is acceptable. Please apply the board house’s standard design rules so the file set uploads and clears JLCPCB’s automated DFM check on the first pass.
Deliverables required to finish the job:
• Editable CAD source files
• Manufacturing-ready Gerber ZIP with NC drill
• Complete BOM with manufacturer part numbers
• Pick-and-Place file for assembly
Once those files load cleanly at the fabricator, the project is considered complete.