Supplier photo of an assembled radio kit with a purple circuit board, telescopic antenna and clear case.
Supplier photo
Temu affiliate offer · Project idea

Build a radio

Soldering required. Check the supplied parts and board revision.

View kit on Temu

Tricky Circuit may earn a commission through these links. Product ideas have not been bench-tested by Tricky Circuit and are not verified lesson parts lists.

ATtiny

Wiring tips to ensure your ATtiny (13/25/45/85) runs reliably in any project. 🤖⚡

0

âś… Must-Have Components for Stable Operation

ComponentPurpose
ATtiny MCUThe brains of your project 🧠
Power Supply (3.3V or 5V)Stable voltage source from battery, regulator, or USB
0.1 µF Ceramic CapacitorBypass capacitor between Vcc and GND for power noise filtering ⚡
Reset Button (optional)To manually reset the chip (only if RESET pin is active)
10kΩ Pull-Up Resistor on RESETPrevents false resets if RESET is not disabled via fuse bits
ISP Series Resistors (optional)~1kΩ protection when programming ATtiny in-circuit

🧩 Basic Stable Circuit (ATtiny85 Example)

  • Use INPUT_PULLUP for buttons to avoid external resistors.
  • Keep the power lines clean and tight!

🔋 Power Supply Options

Power SourceNotes
CR2032 coin cellFor short-term portable use
Li-ion + LDO (AMS1117)Stable 3.3V output, good for sensors & WiFi
USB 5V (via regulator)Great for dev boards or breadboarding

📦 Recommended Extras for Smooth Operation

ComponentWhy It Helps
10 µF Electrolytic CapAdditional power smoothing, good for servos
Low ESR Ceramic CapFilters high-frequency noise
Perfboard or PCBAvoids flaky connections from breadboards

🛠️ Optional Peripherals — What to Add

PeripheralAdd This
LEDs220–330Ω resistors on each pin
ButtonsUse INPUT_PULLUP or external 10kΩ resistor
OLED / LCDAdd 0.1µF and 10µF on Vcc near display
Servos / MotorsUse separate power + decoupling caps

📡Broadcast the signal — amplify the connection.

You might also like

🔍 Detailed ATtiny Simulation Programs

🔧 Potentiometers: A Quick Overview

ESP32 Water Probe: Why a Sensor Should Not Stay Powered All Day. GPIO25 → 100 kΩ → electrode A Electrode B → SENSE → GPIO34 SENSE → 1 MΩ → GND GPIO26 → 680 Ω → LED anode; cathode → GND

ESP32 Water Probe: Why a Sensor Should Not Stay Powered All Day

Two Picos, One Wire of Data: Detect Broken and Missing Messages. Sender GP0 TX, physical pin 1 → receiver GP1 RX, physical pin 2 Sender GND, pin 3 → receiver GND, pin 3 Sender 3V3 pin 36 → potentiometer outer terminal; other outer terminal → GND Receiver GP0 and sender GP1 left unconnected

Two Picos, One Wire of Data: Detect Broken and Missing Messages

DRV8825: High-Performance Stepper Motor Driver Explained

What is a Diode?

Leave a Reply

Temu affiliate offers

Find your next electronics project

Explore these do-it-yourself project kits. Check the selected option, included parts and instructions on each offer.

Tricky Circuit may earn a commission if you buy through these Temu affiliate links. These are product ideas; they have not been bench-tested by Tricky Circuit and are not verified lesson parts lists.

Supplier photo of an assembled infinity mirror light cube illuminated on a dark background.

Supplier product photo

Build an infinity light cube

Listing specifies 5-volt direct current. Soldering required; battery and glue not included.

View kit on Temu

Supplier photo of a breadboard, jumper wires and assorted electronic components in a plastic storage case.

Supplier product photo

Try breadboard experiments

Breadboard, wires and assorted parts. Arduino controller board not included.

View kit on Temu

Supplier photo of an assembled blue surface-mount soldering practice board with a circular ring of small lights.

Supplier product photo

Solder a chasing-light board

Surface-mount soldering practice. Battery and battery holder not included.

View kit on Temu