HallowBadges-Pumpkin
makeristic·HallowBadges-Pumpkin
About the HallowBadges-Pumpkin PCB
HallowBadges-Pumpkin is an open source AVR/Arduino PCB design by makeristic, published on GitHub. It is a 2-layer board measuring 99.6 × 94.1 mm, with 10 components from 6 distinct parts.
Its main chip is the ATTINY13A-SSU, from the AVR/Arduino family. By type, the board carries 4 resistors, 2 diodes, 1 IC, 1 transistor, 1 connector and 1 battery holder.
From the project
Here is a fun and simple Halloween project, it is a flashing LED badge or decoration with an ATtiny13a microcontroller, powered by a CR2032 battery.
Here is a fun and simple Halloween project, it is a flashing LED badge or decoration with an ATtiny13a microcontroller, powered by a CR2032 battery.
A single CR2032 battery can power this device for about 6 days / 144 hours. The board also features an optional surface-mount 2.54mm connector which is Simple Add-ons (SAO) compatible so you can power the badges externally. * You can program the device using a SOIC-8 Test Clip or similar, I attached it to an Arduino-as-ISP setup.

Main components on the HallowBadges-Pumpkin
HallowBadges-Pumpkin bill of materials (BOM)
10 components, 6 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | ATTINY13A-SSU ATtiny13A-SSU | SOIC-8_3.9x4.9mm_P1.27mm | U1 |
| 1 | BSS138 | SOT-23 | Q1 |
| 1 | CONN_02X03_SIMPLE_ADD_ON Conn_02x03_Simple_Add_On | PinHeader_2x03_P2.54mm_Vertical_SMD | J1 |
| 1 | Battery_Cell | BatteryHolder_Keystone_3002_1x2032 | BT1 |
| 2 | LED_Small | LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D1, D2 |
| 4 | R_Small | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1, R2, R3, R4 |
HallowBadges-Pumpkin design files
The KiCad project lives in the makeristic/HallowBadges-Pumpkin repository on GitHub; these links point at the commit this page was built from.
HallowBadges-Pumpkin: common questions
What microcontroller does the HallowBadges-Pumpkin use?
The HallowBadges-Pumpkin is built around the ATTINY13A-SSU, from the AVR/Arduino family.
How big is the HallowBadges-Pumpkin PCB?
The HallowBadges-Pumpkin measures 99.6 × 94.1 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the HallowBadges-Pumpkin?
10 components, from 6 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the HallowBadges-Pumpkin design files?
From the makeristic/HallowBadges-Pumpkin repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.
Can I use the HallowBadges-Pumpkin design in my own project?
The repository has no license, so all rights stay with makeristic. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the HallowBadges-Pumpkin without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug AVR/Arduino firmware against it before you order a PCB.
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