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Melodica main

connormichalec·395-Melodica·PCBs/V1_OLD/Melodica_main/V2/melodica_main.kicad_pcb

Melodica main PCB layout, top view — open source STM32 board by connormichalec

About the Melodica main PCB

Melodica main is an open source STM32 PCB design by connormichalec, published on GitHub. It is a 2-layer board measuring 178.5 × 32.5 mm, with 35 components from 14 distinct parts.

Its main chip is the STM32F405RGTx, from the STM32 family. By type, the board carries 7 capacitors, 1 IC, 1 connector and 1 battery holder.

From the project

Electronic modular melodica with built in synthesis

Main components on the Melodica main

STM32F405RGTx

Melodica main bill of materials (BOM)

35 components, 14 distinct parts.

QtyPartRefs
1
STM32F405RGTx
U1
1
AudioJack3_SwitchTR
J1
11
R
1k1, 1k2, 1k3, 1k4, 3.6k, 10k1, 10k2, 10k3 +3
1
Battery
BT1
1
Conn_02x38_Odd_Even_Shielded
Keys1
1
Conn_01x05
MIDI1
3
CD74HC4067M
MUX1, MUX2, MUX3
2
Conn_01x02
Master_Switch1, Misc_Power1
1
Conn_02x08_Odd_Even
Programmable_Inputs1
2
Conn_01x04
Programmer1, Programmer2
2
SW_Push
Reset1, Reset2
1
STM32L031K6Tx
STM32L031K6Tx1
1
Conn_01x02_Pin
UART1
7
C
C1, C2, C3, C4, C5, C6, C7

Melodica main design files

The KiCad project lives in the connormichalec/395-Melodica repository on GitHub; these links point at the commit this page was built from.

Melodica main: common questions

What microcontroller does the Melodica main use?

The Melodica main is built around the STM32F405RGTx, from the STM32 family.

How big is the Melodica main PCB?

The Melodica main measures 178.5 × 32.5 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Melodica main?

35 components, from 14 distinct parts. The full bill of materials is listed on this page.

Where can I download the Melodica main design files?

From the connormichalec/395-Melodica repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Melodica main design in my own project?

The repository has no license, so all rights stay with connormichalec. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Melodica main without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug STM32 firmware against it before you order a PCB.

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