Elektor Summer Circuits 2022 (EN)

Over 50 Circuits & Projects

1. US-Style Siren
2. Two Rotary Encoders on One Analog Input
3. How to Build a Digital 220-V AC Dimmer with Arduino
4. Current Source for LEDs
5. Detect Four Switches with 1 Pin
6. Tiny On/Off Switch with Battery Level Check
7. DIY Hand Sanitizer Dispenser
8. A Simple Electronic Organ
9. Ultra-Simple Stereo Amplifier
10. Sound Activated Switch for Amplifiers
11. Balanced/Unbalanced Converter
12. External Mains Filter
13. Button-Free Door Control
14. DI Box for a Smartphone
15. Fun With Running Lights
16. One-Button Thyristor Control
17. Quasi-Analog Exposure Timer for the Dark Room
18. Circuits Galore From the Hackster.io Community
19. Analog Tanning Timer
20. Yet Another Single-Wire LCD Interface
21. Simple AVR ATtiny13-Based PWM Generator
22. Second Life for Batteries
23. Touch Switch for LED Lights
24. Tester for LEDs and DIP Switches
25. Go/No-Go IR Control Tester
26. Power Semiconductor Tester
27. SPI for WS2812(B) LEDs
28. Measuring Power Inductors
29. One Plug for Raspberry Pi and Audio DAC
30. DIY Test Fixture for the LCR Meter
31. Arduino Ammeter
32. Two-Finger Organ
33. Low Noise ADC Calibrator
34. DC/DC Boost Converter
35. Two Potentiometers on One Digital Input
36. Acoustic Proximity Sensor
37. Battery-Free Radiator Sensor
38. A Circuit for Detecting Bugs and Wireless Cameras
39. Car Interior Light Timer
40. Candle Simulator
41. Digital Kitchen Timer
42. Milliohm Meter
43. Hot Water Production Delay Timer
44. Simple Charger for 2S 18650 Cells
45. Tiny Frequency Reference
46. Low-Power IR Switch
47. Recycle Your Car’s Telephone Charger
48. Microphone Pre-Amp for Arduino
49. DIY EMI Filters
50. Electronic Dice Without an MCU
51. Finger Capacitor
52. A Self-Charging LED Flasher

Also in this edition

• KiCad 6 – Five Features to Consider
• Flashback – The Elektor SC/MP Computer
• Interview – Making Art with Electricity
• My First PCB – Going Head First Into KiCad
• Minimizing Hardware with Smart Software
• Infographics – Facts and Figures
• New Devices from Analog
• Flashback – The Elektor Metal Detector
• Hexadoku – The Original Elektorized Sudoku