HardLabs

Source Controller

MECSEM·electrical·HVDC/Source Controller/Source Controller.kicad_pcb

Source Controller PCB layout, top view — open source RP2040/RP2350 board by MECSEM

About the Source Controller PCB

Source Controller is an open source RP2040/RP2350 PCB design by MECSEM, published on GitHub under the GPL-3.0 license. It is a 4-layer board measuring 72 × 50 mm, with 114 components from 51 distinct parts.

Its main chip is the RP2350B, from the RP2040/RP2350 family. Other key parts include the TPS5430DDA, OPA2387xxDGK, CSD25310Q2, ADS131M04xPW and W25Q128JVS. By type, the board carries 46 capacitors, 31 resistors, 19 diodes, 8 ICs, 6 transistors and 2 switches.

It belongs with the power & battery designs in this gallery.

From the project

All the electrical designs for MECSEM.

KiCad sources for all the PCBs in the microscope.

This repository contains only the electrical design: schematics, PCB layouts, and KiCad symbol/footprint library.

A Linux Mint host PC inside the chassis (powered by the in-chassis PicoPSU) commands two central RP2350 controllers over USB:

HV Controller: the master optics-column controller. Drives source bias, lenses, deflectors, the scintillator detector, raster scan, and the PMT readout. Bridges the floating cathode side onto USB. LV Controller: the vacuum subsystem state machine: roughing pump, turbopump VFD (RS-485), isolation valve…

Main components on the Source Controller

TPS5430DDAOPA2387xxDGKCSD25310Q2ADS131M04xPWRP2350BW25Q128JVSLM27762

Source Controller bill of materials (BOM)

114 components, 51 distinct parts.

QtyPartRefs
1
TPS5430DDA
U1
2
OPA2387xxDGK
U2, U8
1
CSD25310Q2
U3
1
ADS131M04xPW
U4
1
RP2350B
U5
1
W25Q128JVS
U7
1
LM27762
U9
4
HL3416
hongjiacheng
Q1, Q4, Q5, Q6
1
S9012 2T1 200-350
Changjiang Electronics Tech (CJ)
Q2
1
S9013 J3 200-350
Changjiang Electronics Tech (CJ)
Q3
1
ASE-12.000MHz
Y1
1
USB4085-GF-A
J8
1
DFU
SW1
1
RESTART
SW2
8
H3V3U10B
hongjiacheng
D1, D2, D3, D4, D9, D10, D11, D12
1
H3V3HD3B
hongjiacheng
D5
2
SS54
MDD（Microdiode Electronics）
D6, D7
4
H5VSD3B
hongjiacheng
D8, D15, D18, D19
2
H5VS10BA
hongjiacheng
D13, D14
1
Green
Hubei KENTO Elec
D16
Show 31 more
QtyPartRefs
1
Red
Foshan NationStar Optoelectronics
D17
4
10uF
Samsung Electro-Mechanics
C1, C2, C4, C5
2
2.2nF
Samsung Electro-Mechanics
C3, C41
1
10nF
C6
7
100uF
Samsung Electro-Mechanics
C7, C8, C9, C10, C11, C12, C13
1
220nF
Samsung Electro-Mechanics
C14
4
10uF
Samsung Electro-Mechanics
C15, C31, C33, C37
16
100nF
Samsung Electro-Mechanics
C16, C17, C18, C19, C20, C21, C22, C23 +8
1
1uF
Samsung Electro-Mechanics
C30
1
2.2uF
Samsung Electro-Mechanics
C32
2
2.2uF
Samsung Electro-Mechanics
C36, C46
1
47uF
Samsung Electro-Mechanics
C38
3
330pF
Samsung Electro-Mechanics
C39, C40, C42
2
10uF
Samsung Electro-Mechanics
C43, C44
1
1uF
Samsung Electro-Mechanics
C45
1
2.2kΩ
UNI-ROYAL(Uniroyal Elec)
R2
2
1.2kΩ
UNI-ROYAL(Uniroyal Elec)
R3, R30
1
10Ω
UNI-ROYAL(Uniroyal Elec)
R4
1
100Ω
UNI-ROYAL(Uniroyal Elec)
R5
3
10kΩ
UNI-ROYAL(Uniroyal Elec)
R6, R7, R23
2
49.9Ω
UNI-ROYAL(Uniroyal Elec)
R9, R10
6
1kΩ
UNI-ROYAL(Uniroyal Elec)
R11, R12, R35, R36, R37, R38
2
22Ω
UNI-ROYAL(Uniroyal Elec)
R13, R14
1
10Ω
UNI-ROYAL(Uniroyal Elec)
R15
1
120Ω
UNI-ROYAL(Uniroyal Elec)
R16
2
5.1kΩ
UNI-ROYAL(Uniroyal Elec)
R17, R18
2
470Ω
UNI-ROYAL(Uniroyal Elec)
R19, R24
2
150Ω
UNI-ROYAL(Uniroyal Elec)
R25, R26
1
27kΩ
UNI-ROYAL(Uniroyal Elec)
R29
2
51kΩ
UNI-ROYAL(Uniroyal Elec)
R39, R41
2
15kΩ
UNI-ROYAL(Uniroyal Elec)
R40, R42

Source Controller design files

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

Source Controller: common questions

What microcontroller does the Source Controller use?

The Source Controller is built around the RP2350B, from the RP2040/RP2350 family.

How big is the Source Controller PCB?

The Source Controller measures 72 × 50 mm, has 4 copper layers and is 1.6062 mm thick.

How many components are on the Source Controller?

114 components, from 51 distinct parts. The full bill of materials is listed on this page.

Where can I download the Source Controller design files?

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

Can I use the Source Controller design in my own project?

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

Can I test firmware for the Source Controller 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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