Power panic
About the Power panic PCB
Power panic is an open source AVR/Arduino PCB design by sl1pkn07, published on GitHub. It is a 2-layer board measuring 40 × 26 mm, with 27 components from 25 distinct parts.
Its main chip is the ATMEGA32U2, from the AVR/Arduino family. By type, the board carries 12 resistors, 7 connectors, 4 capacitors, 2 transistors, 1 IC and 1 diode.
From the project
My Prusas. Official STLs for my Prusas printers. and other stuff
Main components on the Power panic
Power panic bill of materials (BOM)
27 components, 25 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | ATMEGA32U2 LTV-354T_ Microchip | Optocoupler_SMD_LTV-817S | U1 |
| 1 | MMBF170LT1G TI | SOT-23 | Q1 |
| 1 | NCV8402 MMBF170LT1G On Semi | SOT-23 | Q2 |
| 1 | HDR10 PE On Shore | faston-hole-m | P1 |
| 1 | HDR10 N On Shore | faston-hole-m | P3 |
| 1 | L | faston-hole-m | P5 |
| 1 | 24V | Pin_1x02-XL | P7 |
| 1 | AC_FAULT | Pin_1x02-XL | P8 |
| 1 | measure | Pin_Header_Straight_1x04 | P9 |
| 1 | AC | ac-power-plug-fuse | P10 |
| 1 | BAT54 D_ALT Diodes Incorporated | SOD-323 | D1 |
| 1 | 22PF 330n AVX | C_0805 | C1 |
| 1 | 10UF 10u Kemet | C_1206 | C2 |
| 1 | 100NF 100n Murata | C_0805 | C4 |
| 1 | 100UF 10u Nichicon | C_1206 | C5 |
| 2 | 22R 11k Yageo | R_1206 | R1, R2 |
| 1 | 200K 10k Vishay Dale | R_0805 | R3 |
| 1 | 10R 33k Yageo | R_0805 | R4 |
| 1 | 4.7K 11k Yageo | R_1206 | R5 |
| 1 | 2K37 11k Yageo | R_1206 | R6 |
Show 5 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 0.22R 100k Panasonic | R_0805 | R7 |
| 1 | 10R 10k Yageo | R_0805 | R8 |
| 2 | 10K 11k Yageo | R_1206 | R9, R11 |
| 1 | 0.22R 11k Panasonic | R_1206 | R10 |
| 1 | 10R 11k Yageo | R_1206 | R12 |
Power panic design files
The KiCad project lives in the sl1pkn07/Prusa repository on GitHub; these links point at the commit this page was built from.
Power panic: common questions
What microcontroller does the Power panic use?
The Power panic is built around the ATMEGA32U2, from the AVR/Arduino family.
How big is the Power panic PCB?
The Power panic measures 40 × 26 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Power panic?
27 components, from 25 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 Power panic design files?
From the sl1pkn07/Prusa repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.
Can I use the Power panic design in my own project?
The repository has no license, so all rights stay with sl1pkn07. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the Power panic 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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