MCU
About the MCU PCB
MCU is an open source PIC PCB design by AMSAT-EA, published on GitHub. It is a 2-layer board measuring 40 × 40 mm, with 44 components from 23 distinct parts.
Its main chip is the PIC18F45K22, from the PIC family. Other key parts include the MAX6369, TC1262-30VDB, DS18B20 and LT6005. By type, the board carries 15 capacitors, 13 resistors, 5 ICs, 5 connectors, 5 diodes and 1 crystal.
It belongs with the rf & radio designs in this gallery.
From the project
EASAT-2 satellite
This is the AMSAT EA Github repository for EASAT2 satellite project.
This is mainly an open hardware and software project and it is open to students. The goal is designing and building a small FM repeater satellite, with CW beacon, in a pocketQube structure.
For more information visit our website at:
Este es el repositorio GitHub del proyecto de satélite EASAT2 de AMSAT EA. Es un proyecto abierto de hardware y software. El objetivo es diseñar y construir un pequeño satélite repetidor de FM, con una baliza morse, en una estructura del tipo pocketQube.
Main components on the MCU
MCU bill of materials (BOM)
44 components, 23 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | MAX6369 | SOT-23-8 | U1 |
| 1 | TC1262-30VDB | SOT-223 | U2 |
| 1 | DS18B20 | MSOP-8_3x3mm_Pitch0.65mm | U3 |
| 1 | PIC18F45K22 | LQFP-44_10x10mm_Pitch0.8mm | U4 |
| 1 | LT6005 | SSOP-16_3.9x4.9mm_Pitch0.635mm | U5 |
| 1 | CRYSTAL_SMD | Crystal_SMD_0603-4pin_6.0x3.5mm | X1 |
| 4 | CONN_01X05 | Molex_MicroLatch-53253-0570_05x2.00mm_Straight | P1, P2, P3, P4 |
| 1 | CONN_01X02 | Molex_KK-6410-02_02x2.54mm_Straight | P5 |
| 2 | LED | LED_1206 | D1, D2 |
| 2 | ZENER | D_SOD-123 | D3, D5 |
| 1 | ZENER | D_SOD-323_HandSoldering | D4 |
| 5 | 100nF | C_0603_HandSoldering | C1, C7, C9, C11, C15 |
| 2 | 18pF | C_0603_HandSoldering | C2, C4 |
| 2 | 1uF | C_0603_HandSoldering | C3, C5 |
| 6 | 10nF | C_0603_HandSoldering | C6, C8, C10, C12, C13, C14 |
| 2 | 470 | R_0603_HandSoldering | R1, R2 |
| 2 | 4K7 | R_0603_HandSoldering | R3, R5 |
| 1 | 6,19K | R_0603_HandSoldering | R4 |
| 2 | 10K | R_0603_HandSoldering | R6, R13 |
| 1 | 4,99K | R_0603_HandSoldering | R7 |
Show 3 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 6,65K | R_0603_HandSoldering | R8 |
| 3 | 1K | R_0603_HandSoldering | R9, R11, R12 |
| 1 | R | R_0603_HandSoldering | R10 |
MCU design files
The KiCad project lives in the AMSAT-EA/easat-2 repository on GitHub; these links point at the commit this page was built from.
MCU: common questions
What microcontroller does the MCU use?
The MCU is built around the PIC18F45K22, from the PIC family.
How big is the MCU PCB?
The MCU measures 40 × 40 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the MCU?
44 components, from 23 distinct parts. The full bill of materials is listed on this page.
Where can I download the MCU design files?
From the AMSAT-EA/easat-2 repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the MCU design in my own project?
The repository has no license, so all rights stay with AMSAT-EA. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the MCU without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug PIC firmware against it before you order a PCB.
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