Arduino

DIY Arduino Bluetooth Programming Shield — wirelessly upload sketches to an Arduino without USB tethering.

Source

• Make: DIY Arduino Bluetooth Programming Shield
• Published on Make Magazine (project tutorial)

Concept

An Arduino Uno (or compatible) hosts a Bluetooth serial module (e.g. HC-05/HC-06) wired to D0/D1 (with optional auto-reset circuit). The IDE connects over a virtual COM port and triggers reset into the bootloader for wireless avrdude uploads.

Typical wiring goals

• Level-shift Bluetooth module to 5V Arduino logic if needed
• DTR/reset capacitor circuit for auto-reset on serial open
• Power Bluetooth module from regulated 5V or 3.3V per module datasheet

Use cases

• Sealed enclosures where USB is inaccessible
• Wearables and installations where the board is buried in a project
• Teaching wireless embedded workflows before moving to ESP32 OTA

Related

• Arduino
• MicroControllers & SoCs