HardLabs

A1-Main-Board

DevCyclonekitten·Bambu-A1-Klipper·Hardware Files/A1-Main-Board/A1-Main-Board.kicad_pcb

A1-Main-Board layout, top view — open source RP2040/RP2350 board by DevCyclonekitten

About the A1-Main-Board

A1-Main-Board is an open source RP2040/RP2350 PCB design by DevCyclonekitten, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 152 × 60 mm, with 44 components from 26 distinct parts.

Its main chip is the RaspberryPi_Pico, from the RP2040/RP2350 family. Other key parts include the TLV75733PDBV and TMC2209_SILENTSTEPSTICK. By type, the board carries 18 capacitors, 13 connectors, 6 resistors, 4 ICs, 1 module and 1 diode.

From the project

A repository about the development of modifying a bambu labs a1 printer to run on klipper

Site viewable at: https://devcyclonekitten.github.io/Bambu-A1-Klipper/

Uhh this hasn't been updated, but so far I did get the printer working, then killed mainboard I have all components working, except screen and eddy current sensor, am just finalizing pcb's then trying to rebuild.

Main components on the A1-Main-Board

TLV75733PDBVTMC2209_SILENTSTEPSTICKRaspberryPi_Pico

A1-Main-Board bill of materials (BOM)

44 components, 26 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
TLV75733PDBV
U7
3
TMC2209_SILENTSTEPSTICK
U9, U10, U11
1
RaspberryPi_Pico
A1
1
MB_UART
J1
1
USB_Toolhead_Outgoing
J8
1
ADXL345
Toolhead_USB
J9
1
FPC_CON
J10
1
Bed-Binder
J11
1
MotorJST
J12
1
Power-Input
J13
1
CONN_01X08_PIN
Power-Input
J14
1
ExpansionPortJST
J15
3
Motor Connector
J17, J18, J19
1
USB_Toolhead_Incoming
P1
1
DSK26
BAV99
D1
1
120r 100MHz
FB2
6
100uF
C35, C36, C39, C52, C55, C58
2
1uF
Samsung Electro-Mechanics
C42, C43
1
10nF
C47
2
1uF
C48, C49
Show 6 more
QtyPartRefs
3
100nF
C50, C53, C56
3
10uF
C51, C54, C57
1
100nF
Samsung Electro-Mechanics
C59
2
2.2kΩ
UNI-ROYAL(Uniroyal Elec)
R32, R33
3
10kΩ
UNI-ROYAL(Uniroyal Elec)
R38, R39, R40
1
4.7kΩ
UNI-ROYAL(Uniroyal Elec)
R41

A1-Main-Board design files

The KiCad project lives in the DevCyclonekitten/Bambu-A1-Klipper repository on GitHub; these links point at the commit this page was built from.

A1-Main-Board: common questions

What microcontroller does the A1-Main-Board use?

The A1-Main-Board is built around the RaspberryPi_Pico, from the RP2040/RP2350 family.

How big is the A1-Main-Board?

The A1-Main-Board measures 152 × 60 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the A1-Main-Board?

44 components, from 26 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the A1-Main-Board design files?

From the DevCyclonekitten/Bambu-A1-Klipper repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the A1-Main-Board design in my own project?

Yes, under the terms of its GPL-3.0 license, which DevCyclonekitten chose for the repository.

Can I test firmware for the A1-Main-Board 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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