the ladder · rung 6 of 10
Level 6 · Logic
Chips that count, time, and decide.
The 555 is the most famous chip ever made. Two capacitors and a couple of resistors turn it into a metronome you can hear, see, or feel. Once you understand it, half the analog electronics on Earth stops being mysterious.
New in the box
- 555 timer chip — The most famous chip ever — it blinks, beeps, and keeps time.
- 10 µF capacitor — A tiny rechargeable bucket for charge — fills and empties to keep time.
- 100 nF capacitor — A very small charge bucket that smooths out electrical wobbles.
with everything through L6, your box now holds 22 component types.
Projects at Level 6
No Level 6 projects yet. The new parts above are catalogued and reviewed; the projects that use them are still being drafted and breadboarded. In the meantime, everything from the earlier levels still works — pick one below.
Earlier projects you can still build
Every project at Levels 1–6 draws on the components you now own — earlier projects never stop being useful. With the full L6 box you can tackle any of these 43 projects:
🔦 First Light · 📡 Morse Code Messenger · 🎈 Twin Reds · 🚦 Tabletop Traffic Light · 🔐 The Vault · 🚪 Do Not Disturb Sign · 🤝 Handhold Chain · 🚪 Two-Door Signal · 🚨 Signal Light · 🛟 Escape Hatch · 🧪 The Brightness Lab · 🔔 Door Buzzer · 🎛️ Dial-a-Brightness · 📻 Dial-a-Buzz · 🔧 Continuity Tester · 🚨 Panic Doorbell · 🔈 Whisper Alarm · 🛎️ Two-Tone Doorbell · 🚨 Arm & Ring · 🔔 Twin Bells · 🖐️ Two-Hand Bell · 🔕 Silent Alarm · 🎮 Quiz Buzzer · 🌙 Automatic Night Light · 🌅 Sunrise Alarm · 🍪 Cookie Jar Alarm · 🪤 Trip Wire Alarm · 🌡️ Warm Hand Alarm · 📖 Reading Light · 🏝️ Vacation Nightlight · 📚 Study Lamp · 🌆 Curfew Beeper · 🤒 Fever Beeper · 🌇 Dusk Chorus · 🎺 Warm Hand Chorus · 🌀 First Spin · 💨 Handheld Fan · 🌞 Sunrise Fan · 🆘 Panic Fan · 🎉 Party Spinner · 🚗 Twin Wheels · 🎚️ Dial-a-Spin · 🕸️ Trip Wire Fan