MegaII Breakout
About the MegaII Breakout
MegaII Breakout is an open source PCB design by baldengineer, published on GitHub under the MIT license. It is a 2-layer board measuring 91.4 × 91.4 mm, with 21 components from 13 distinct parts.
Other key parts include the Apple_MEGA_II. By type, the board carries 16 jumpers, 2 capacitors, 1 IC, 1 diode and 1 resistor.
It belongs with the dev boards & breakouts designs in this gallery.
From the project
Using the Mega II from a IIgs to make a Apple IIe compatible computer: The Mega IIe!
I quickly realized the MEGA-II by itself wasn't going to be a useful breakout.
So, this board got replaced by the "gd MEGA-II" proto board.
(During KiCad 7 update, multiple symbols were lost. I tried to fix them, but the most recent schematic was not the one used for the pcb!)
Main components on the MegaII Breakout
MegaII Breakout bill of materials (BOM)
21 components, 13 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | Apple_MEGA_II | PLCC-84_THT-Socket | U1 |
| 2 | P12-21 | PinHeader_1x10_P2.54mm_Vertical | JP1, JP9 |
| 2 | P22-32 | PinHeader_1x11_P2.54mm_Vertical | JP2, JP10 |
| 2 | P33-42 | PinHeader_1x10_P2.54mm_Vertical | JP3, JP11 |
| 2 | P01-11 | PinHeader_1x11_P2.54mm_Vertical | JP4, JP12 |
| 2 | P43-53 | PinHeader_1x11_P2.54mm_Vertical | JP5, JP13 |
| 2 | P75-84 | PinHeader_1x10_P2.54mm_Vertical | JP6, JP14 |
| 2 | P64-74 | PinHeader_1x11_P2.54mm_Vertical | JP7, JP15 |
| 2 | P54-63 | PinHeader_1x10_P2.54mm_Vertical | JP8, JP16 |
| 1 | PWR | LED_1206_3216Metric | D1 |
| 1 | 100nF | C_0805_2012Metric | C1 |
| 1 | 10uF | C_0805_2012Metric | C2 |
| 1 | 1k | R_0805_2012Metric | R1 |
MegaII Breakout design files
The KiCad project lives in the baldengineer/Mega-IIe repository on GitHub; these links point at the commit this page was built from.
MegaII Breakout: common questions
How big is the MegaII Breakout?
The MegaII Breakout measures 91.4 × 91.4 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the MegaII Breakout?
21 components, from 13 distinct parts. The full bill of materials is listed on this page.
Where can I download the MegaII Breakout design files?
From the baldengineer/Mega-IIe repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the MegaII Breakout design in my own project?
Yes, under the terms of its MIT license, which baldengineer chose for the repository.
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