HardLabs

Mega866-cad

JohnDMcMaster·mega866-cad·r2/mega866.kicad_pcb

Mega866-cad PCB layout, top view — open source RP2040/RP2350 board by JohnDMcMaster

About the Mega866-cad PCB

Mega866-cad is an open source RP2040/RP2350 PCB design by JohnDMcMaster, published on GitHub. It is a 2-layer board measuring 221.3 × 172.7 mm, with 42 components from 15 distinct parts.

Its main chip is the Pico, from the RP2040/RP2350 family. By type, the board carries 24 resistors, 12 connectors, 3 transistors, 2 diodes and 1 IC.

From the project

Aggregate multiple TL866 into a single ZSM socket module

Main components on the Mega866-cad

Pico

Mega866-cad bill of materials (BOM)

42 components, 15 distinct parts.

QtyPartRefs
1
Pico
U1
1
BSS84
Q1
2
2N7002
Q2, Q3
1
ZSM1-SM1
J1
1
ZSM1-SM2
J2
4
tl866_dip40
J3, J5, J7, J9
4
Conn_01x06_Male
J4, J6, J8, J10
2
Conn_01x02_Male
J11, J12
2
LED
D1, D2
2
R
R1, R2
2
47k
R3, R6
4
4.7K
R4, R5, R11, R17
4
NOLOAD
R7, R8, R9, R10
11
0
R12, R13, R14, R16, R18, R19, R20, R21 +3
1
100k
R15

Mega866-cad design files

The KiCad project lives in the JohnDMcMaster/mega866-cad repository on GitHub; these links point at the commit this page was built from.

Mega866-cad: common questions

What microcontroller does the Mega866-cad use?

The Mega866-cad is built around the Pico, from the RP2040/RP2350 family.

How big is the Mega866-cad PCB?

The Mega866-cad measures 221.3 × 172.7 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Mega866-cad?

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

Where can I download the Mega866-cad design files?

From the JohnDMcMaster/mega866-cad repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Mega866-cad design in my own project?

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

Can I test firmware for the Mega866-cad without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug RP2040/RP2350 firmware against it before you order a PCB.

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