ATtiny ShieldCase is a 3D-printable programming shield for Arduino UNO designed to make programming ATtiny13/25/45/85 chips effortless. Whether you're prototyping or just uploading a quick sketch, this little tool snaps on top of your UNO and does it all — no breadboards, no confusing wiring, no guesswork.

The shield features:

• 🟢 Heartbeat LED – Shows your programmer is ready.
• 🟡 Programming LED – Blinks during upload.
• 🔴 Error LED – Lights up if upload fails.
• 🔵 PB4 Blink Test LED – Instantly verify your sketch with a Blink test right on the shield!
• 🔌 Clearly marked pins and socket orientation.
• 🛡️ Sturdy 3D-printed enclosure hides the DIY internals and protects your circuit.

📦 What You Need:

• ✅ DIP8 socket for ATtiny13/25/45/85
• ✅ 4x LEDs (Red, Green, Yellow, Blue)
• ✅ 4x 220Ω resistors
• ✅ 1x 10µF capacitor (to disable auto-reset on UNO)
• ✅ 4x M2x8mm self-tapping screws
• ✅ 4x6 protoboard (or adapt size to match your case)
• ✅ Male header pins and jumper wires
• ✅ Arduino UNO (or compatible)

🧠 Full Fritzing schematic included for easy wiring
🧰 Build once, and program any ATtiny chip with confidence and zero mess

Why Use It?

Programming ATtinys usually means:

• Breadboarding all over again
• Searching for pinouts
• Rewiring just for a simple Blink test

ATtiny ShieldCase eliminates all of that. Pop the shield on your UNO, drop your chip into the socket, upload a sketch, and test it instantly with the onboard PB4 LED.

The case also includes:

• Engraved notes (pin labels, chip direction)
• Neat cutouts for status LEDs
• Simple assembly (just 4 screws)

Perfect For:

• ATtiny hobbyists
• Makers automating their workflow
• Educators teaching AVR programming
• Anyone tired of spaghetti wires

❤️ Like It?