#717 Flashing LEDs
A quick test and review of a range of 5mm flashing LEDs: red , slow RGB, fast RGB.
Here’s a quick demo..
Notes
I have a range of flashing LEDs in by parts drawers. These are 3mm and 5mm form-factor clear LEDs, but contain all the circuitry to flash - no external components required. Very convenient when a simple flashing effect is required.
They come in different configurations, for example, I have on hand:
- 5mm Red flash
- 5mm RGB Slow flash
- 5mm RGB Flash flash
These are widely available. For example: this seller on aliexpress has a full range of 3mm, 5mm, Red, RGB flashing options. Look for listings similar to:
100Pcs 3mm 5mm Led Diode Flashing White Red Green Blue Yellow RGB Fast Slow Flash Diffused Clear Color Changing Light Emitting
Circuit Design
A single LED can easily be powered from a CR2032 coin cell.
For this demo I’m running 9 LEDs in parallel (3x red, 3x slow RGB, 3x fast RGB), so I’m running it from a bench power supply set to 3V. It draws around 40mA peak.
