"Should have used a 555"

Name: "Should have used a 555"
SKU: 17548
Price: 12.00 USD
Availability: OutOfStock
Rating: 3.75 (2 reviews)

(2 Reviews)

The LED blinks

Designed by Brian Lough in Ireland

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$12.00

Out of Stock

Sold out since Dec 06, 2020

The LED blinks

What is it? It's a wearable badge with a blinking LED. It can also be used as a SAO. Why did you make it? Because I thought it would be fun What makes it special? The LED turns on for one second, the…

What is it?

It's a wearable badge with a blinking LED. It can also be used as a SAO.

Why did you make it?

Because I thought it would be fun

What makes it special?

The LED turns on for one second, then turns off for one second. Powered by an Attiny13.

Why didn't you use a 555?

Because I didn't want to

What is included?

PCB
Attiny 13 (pre-programmed)
2 220 Ohm Resistor (1 is spare)
2 1206 LEDs (1 Red and 1 Blue, only 1 needed)
1 Power switch
1 2032 battery connector (no battery included due to shipping restrictions)
1 SAO connector (2x3)
1 Badge pin

Soldering

Time: 15 mins. Additional Tools Required: Tweezers Difficulty: Relatively Easy SMD

The LED is a 1206 SMD one, the side of the LED with the green dot should be placed to the right.

The Resistor is 0805 and there is a spare.

The ATtiny13 is probably the most difficult thing to install, but it is a fairly standard SMD IC so should not prove too difficult. Make sure to line up the dot of the IC and the dot on the PCB so the orientation is correct.

The switch is a standard SMD power switch.

The SAO connector is optional, it should be placed to match the markings on the PCB.

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Brian Lough Shipping Policy:

We are currently limiting the amount we go out for social distancing reasons, and usually go to the post office once a week. Usually on a Wednesday or Thursday

Brian

Quantity	Price
1-2	$12.00
3+	$10.00

Review Breakdown

Average Ratings

Product: (3.50)

Documentation: (2.50)

Shipping: (5.00)

Communication: (4.00)

Carrie | Jan. 13, 2020

Funny kit, nice boards!

Very cool that it came with a few colors of LEDs to choose from. I wish the polarity marking on the LED was a little easier to see, but not really a big deal. Gave these out as little holiday gifts, everyone loved them.

Michael | Jan. 1, 2020

Should have used a through-hole design. No instructions.

This is a kit and the description on Tindie states one should go to the seller's website for assembly instructions. In fact, there are no assembly instructions there. I have a fair amount of electronics knowledge and experience, so was able to assemble it without instructions. Most of the components are surface-mount which makes hand-assembly tedious. You need good magnification, a steady hand, a PCB holder, a solder station with a fine-tip iron and hair-thin solder. Alternately, you can use paste solder and an oven. The surface-mount switch broke after just a few operations. I replaced it with a much more robust through-hole switch. It's all a shame. There is plenty of room on the PCB to have used a through-hole or socketed parts design, which would have made assembly much faster and resulted in a tougher product.

Unless you understand electronics pretty well and have experience with surface-mount soldering, don't buy it.

$12.00