[chbot] Flashing LED

[Robin Gilks]

I looked at the flashing LEDs but none seemed likely to be visible in
bright sunlight, especially when it's down by the steering wheel, not the
best place to notice it when avoiding the flower beds.
This is why I was looking at driving a 45000mcd white Cree LED with a
unijuction (or maybe the equivalent PNP/NPN pair)


On Wed, Sep 22, 2021 at 6:01 PM Mark Atherton <markaren1 at xtra.co.nz> wrote:

> How about Jaycars Blue Flashing LED, 5mm, 900mcd ZD0245
>
> Needs a resistor to 5V.
>
> -mark
>
> On 22/09/2021 5:29 PM, Robin Gilks wrote:
> > The grass box full indicator light on my mower has packed up so now is a
> > great time to replace it with a flashing ultra-bright LED one that I'll
> > actually notice (I can't hear the beeper when I'm wearing ear defenders).
> >
> > My first thought was a unijunction device but the 2n2646 is a t05 can so
> > won't fit in the original bulb holder assembly. Jaycar do a 2n6027
> > (which is a quarter of the price) but most of the schematics I've found
> > seem a bit weird - like having the LED in the gate and relying on the
> > timing capacitor discharge current to light it. Is it actually a
> > comparable device?
> >
> > Cheers
> > --
> > Robin Gilks
> >
> >
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