HardLabs

Pikkolo mesh stick

LastZactionHero·pikkolo-mesh-stick·mesh/mesh.kicad_sch

This repository ships a schematic but no board layout.

About the Pikkolo mesh stick PCB

Pikkolo mesh stick is an open source RP2040/RP2350 PCB design by LastZactionHero, published on GitHub. It is a board, with 75 components from 47 distinct parts.

Its main chip is the RP2040, from the RP2040/RP2350 family. Other key parts include the SX1262IMLTRT, GD25Q32E, PE4259-63, ME6211C33M5G and LP5907MFX-3.3. By type, the board carries 40 capacitors, 10 resistors, 8 ICs, 6 inductors, 3 test points and 2 crystals.

It belongs with the rf & radio designs in this gallery.

From the project

USB-stick Meshtastic node: RP2040 + SX1262 US915. Verified schematic-as-code with netlist verification.

A USB-stick-form Meshtastic node: RP2040 + SX1262, US915, ~20 × 75 mm, 2-layer, 2.0 mm FR-4, plugging straight into a USB-A port on PCB edge fingers. Dual antenna feed (printed IFA or SMA whip) selected at build time by a single 0 Ω resistor.

The schematic is captured and verified. Layout has not started.

setup.py writes KiCad's global library tables and sets two path variables (ZLIB, KICAD3RDPARTY), backing up whatever was there into build/. It clones the esden footprint collection (~330 MB) on first run. It refuses to run while KiCad is open, because KiCad rewrites its config on exit and…

Main components on the Pikkolo mesh stick

RP2040SX1262IMLTRTGD25Q32EPE4259-63ME6211C33M5GLP5907MFX-3.3USBLC6-2SC674HCT2G34

Pikkolo mesh stick bill of materials (BOM)

75 components, 47 distinct parts.

QtyPartRefs
1
RP2040
U1
1
SX1262IMLTRT
U2
1
GD25Q32E
U3
1
PE4259-63
pSemi
U4
1
ME6211C33M5G
U5
1
LP5907MFX-3.3
U6
1
USBLC6-2SC6
U7
1
74HCT2G34
U8
1
12MHz
Y1
1
32MHz TCXO clipped-sine
Y2
1
SMA edge
J1
1
USB-A edge fingers
J2
1
IFA 915MHz
AE1
1
USER
SW1
1
BOOTSEL
SW2
1
SWCLK
TP1
1
SWDIO
TP2
1
GND
TP3
1
SK9822-EC20
D1
1
600R@100MHz
FB1
Show 27 more
QtyPartRefs
1
47n
L1
1
2n5
L2
1
4n7
L3
1
15n
L4
1
9n1
L5
2
27p
C1, C2
13
100n
C3, C4, C5, C6, C7, C8, C9, C10 +5
4
1u
C15, C16, C17, C28
3
10u
C18, C19, C39
1
3p
C20
1
5p6
C21
2
39p
C22, C32
2
1p8
C23, C31
1
1p
C24
1
2p4
C25
2
22u
C26, C27
1
470n
C29
1
47n
C30
2
3p9
C33, C34
2
1n
C35, C36
1
47p
C37
1
10p
C40
2
27R
R1, R2
2
1k
R3, R4
1
10k
R5
1
220R
R6
4
100R
R7, R8, R9, R10

Pikkolo mesh stick design files

The KiCad project lives in the LastZactionHero/pikkolo-mesh-stick repository on GitHub; these links point at the commit this page was built from.

Pikkolo mesh stick: common questions

What microcontroller does the Pikkolo mesh stick use?

The Pikkolo mesh stick is built around the RP2040, from the RP2040/RP2350 family.

How many components are on the Pikkolo mesh stick?

75 components, from 47 distinct parts. The full bill of materials is listed on this page.

Where can I download the Pikkolo mesh stick design files?

From the LastZactionHero/pikkolo-mesh-stick repository on GitHub, which has the schematic; the links under Design files point to each one.

Can I use the Pikkolo mesh stick design in my own project?

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

Can I test firmware for the Pikkolo mesh stick 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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