HardLabs

Meepolab

meepodeep·meepolab·meepolab pcb/meepolab pcb.kicad_pcb

Meepolab PCB layout, top view — open source NXP board by meepodeep

About the Meepolab PCB

Meepolab is an open source NXP PCB design by meepodeep, published on GitHub under the MIT license. It is a 4-layer board measuring 125.5 × 67.5 mm, with 192 components from 15 distinct parts.

Its main chip is the Teensy4.1, from the NXP family. Other key parts include the CD74HC4067M and 74HC595. By type, the board carries 111 diodes, 42 resistors, 22 connectors, 10 capacitors and 7 ICs.

It belongs with the audio designs in this gallery.

From the project

Beginner 25-key midi controller with velocity-sensitive keys and drum pads

Meepolab, from the project README
From the project README

Main components on the Meepolab

Teensy4.1CD74HC4067M74HC595

Meepolab bill of materials (BOM)

192 components, 15 distinct parts.

QtyPartRefs
1
Teensy4.1
U1
2
CD74HC4067M
U2, U3
4
74HC595
U4, U5, U6, U7
13
Conn_01x12_Socket
J1, J2, J3, J4, J5, J6, J7, J8 +5
8
Piezo socket
J13, J14, J15, J16, J17, J18, J19, J20
1
Conn_01x02_Socket
J22
32
LED
D1, D2, D3, D4, D5, D6, D7, D8 +24
55
D
D33, D34, D35, D36, D37, D38, D39, D40 +47
16
D
D83, D84, D86, D87, D89, D90, D92, D93 +8
8
BZV55B3V3
D85, D88, D91, D94, D97, D100, D103, D106
2
0.1uf
C1, C2
8
4.7nF
C3, C4, C5, C6, C7, C8, C9, C10
2
10K
R1, R2
32
R
R3, R4, R5, R6, R7, R8, R9, R10 +24
8
1M
R35, R36, R37, R38, R39, R40, R41, R42

Meepolab design files

The KiCad project lives in the meepodeep/meepolab repository on GitHub; these links point at the commit this page was built from.

Meepolab: common questions

What microcontroller does the Meepolab use?

The Meepolab is built around the Teensy4.1, from the NXP family.

How big is the Meepolab PCB?

The Meepolab measures 125.5 × 67.5 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the Meepolab?

192 components, from 15 distinct parts. The full bill of materials is listed on this page.

Where can I download the Meepolab design files?

From the meepodeep/meepolab repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Meepolab design in my own project?

Yes, under the terms of its MIT license, which meepodeep chose for the repository.

Can I test firmware for the Meepolab without the hardware?

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

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