Update

• The new batch is now fixed with the error of jumper between the 555 timers.
• The current stock dated 20.04.2023 does not support a coin cell holder type power supply and uses only the Micro USB-B support.

What is it?

This is a Ghost badge for this upcoming Halloween. It's a 555 timer IC Based Blinky Board made using 100% THT components. It's a simple 555 timer IC-based Bi Flasher setup which is powered by a CR2032 cell. An art by Arnov Sharma

Why did you make it?

The goal here was to make a small THT components-based Solder kit that you guys can use to challenge yourself for doing Soldering. Apart from this premise, it's a small PCB Badge that looks like a Bedsheet ghost with two LED Eyes that are constantly flashing. Its construction is also relatively simple as we only have to put few THT components in their assigned place and our badge will be completed. no coding is required whatsoever.

Kit contents!

• 555 Timer IC
• Custom PCB
• 3mm LEDs
• Micro USB Port, THT one not the SMD version
• 22uf/63v Capacitor
• Coin cell holder
• 100k ohms 1/W Resistor
• 1K Ohms 1/W Resistors and an SR206 Diode

What makes it special?

• Because this PCB doesn't have any SMD components. we don't have to do any fancy SMD process in this. I generally make PCBs with SMD Components that require a solder paste process and other things but we don't have to do that with THT components. We just do two things for the Assembly process of THT Circuit, we add components in their right place one by one, then we solder all the joints and remove the leg of resistance with a wire cutter and that is pretty much it.
• As for the Power Source of this Badge, I added a coin cell holder so I could power it with the generic CR2032 Cell but I also added a USB port to this setup so I can power it up with a 5V 1A Charger. Both of these sources work but Coin cell is more practical as if you want to wear it with an ID Strap or add this badge on your keychain, you could just power it up with the coin cell and it will look pretty socks but a charger won't work which wearable stuff.
• You can also use it as a keychain or Hanging stuff.

How to build it?

Have a look at this YouTube video!