HardLabs

Smu main 1

jaromir-sukuba·J-SMU·pcb/pcb_kicad/smu_main_A1/smu_main_1.kicad_pcb

Smu main 1 PCB layout, top view — open source AVR/Arduino board by jaromir-sukuba

About the Smu main 1 PCB

Smu main 1 is an open source AVR/Arduino PCB design by jaromir-sukuba, published on GitHub. It is a 2-layer board measuring 130 × 80 mm, with 206 components from 77 distinct parts.

Its main chip is the ATmega8535-16JU, from the AVR/Arduino family. Other key parts include the uA7805, DG411xY, OPA202, OPA140 and LM393. By type, the board carries 83 resistors, 57 capacitors, 32 ICs, 9 test points, 9 diodes and 7 connectors.

From the project

DIY source-measure unit

Parameters: + Voltage ranges 12V and 120V (bipolar) + Current ranges 1uA, 10uA, 100uA, 1mA, 10mA, 100mA (bipolar) + Minimal set voltage step - 1mV + Minimal set current step - 100pA + Voltage resolution - 100uV + Current resolution - 1pA

JSMU is designed to work as standalone device, but can be connected to computer via USB, and controlled via simple commands in SCPI form, similar to Keithley 2xxx series SMUs.

Smu main 1, from the project README
From the project README

Main components on the Smu main 1

uA7805DG411xYOPA202OPA140LM393TLP170DDG444AQY221RTL071ISO7341CATmega8535-16JUMAX6225OPA2333OP07AD5686CPC1018Nad7177

Smu main 1 bill of materials (BOM)

206 components, 77 distinct parts.

QtyPartRefs
1
uA7805
U1
1
DG411xY
U2
2
OPA202
U3, U28
11
OPA140
U4, U5, U6, U8, U9, U10, U11, U13 +3
1
LM393
U7
1
TLP170D
U12
2
DG444
U15, U16
1
AQY221R
U17
1
DNP
U18
1
TL071
U21
1
ISO7341C
U22
1
ATmega8535-16JU
U23
1
MAX6225
U24
1
OPA2333
U25
3
OP07
U26, U29, U30
1
AD5686
U27
1
CPC1018N
U31
1
ad7177
U32
2
BC847
Q1, Q2
1
Crystal
Y1
Show 57 more
QtyPartRefs
1
Conn_01x03_Male
J1
1
Conn_01x03_Male
J2
1
Conn_01x05_Male
J3
1
Conn_01x06_Male
J4
1
Conn_01x05_Male
J5
1
Conn_02x03_Odd_Even
J6
1
Conn_01x06_Male
J7
2
EC2-5NU
K1, K2
9
TestPoint
TP1, TP2, TP3, TP4, TP5, TP6, TP7, TP8 +1
1
BAV70
D1
2
BAV99
D2, D3
4
BAV199
D4, D5, D6, D7
2
LED
D8, D9
4
Ferrite_Bead_Small
FB1, FB2, FB3, FB4
16
100n
C1, C4, C24, C26, C27, C34, C35, C36 +8
10
100n
C2, C3, C5, C6, C9, C10, C11, C12 +2
3
22u
C7, C8, C15
2
270p
C16, C17
3
15p
C18, C19, C20
1
10n
C21
2
150p
C22, C25
1
22p
C23
1
270p
C28
3
680p
C29, C30, C31
3
22p
C32, C33, C37
3
1u
C39, C49, C57
1
1u
C41
1
4u7
C42
7
1n
C44, C45, C46, C47, C53, C54, C55
9
2k2
R1, R2, R3, R6, R20, R32, R36, R37 +1
2
33R
R4, R5
23
10k00
R7, R8, R9, R10, R11, R12, R28, R31 +15
3
20k
R13, R14, R16
2
4k7
R15, R26
7
10k1
R17, R19, R21, R27, R51, R55, R60
1
30k
R18
1
200k
R22
3
1k
R23, R56, R58
1
4k7
R24
1
10k1
R25
1
300k00
R29
1
22k10
R30
1
2M00
R38
1
200k00
R39
1
20k5
R40
2
2k00
R41, R83
1
200R00
R42
4
78R
R43, R44, R45, R46
4
4R70
R47, R48, R49, R50
2
100k00
R52, R54
2
250k00
R53, R57
1
1k
R59
2
680R
R61, R62
1
2R2
R65
4
21k50
R67, R69, R81, R82
1
1M6
R72
1
20k50
R80

Smu main 1 design files

The KiCad project lives in the jaromir-sukuba/J-SMU repository on GitHub; these links point at the commit this page was built from.

Smu main 1: common questions

What microcontroller does the Smu main 1 use?

The Smu main 1 is built around the ATmega8535-16JU, from the AVR/Arduino family.

How big is the Smu main 1 PCB?

The Smu main 1 measures 130 × 80 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Smu main 1?

206 components, from 77 distinct parts. The full bill of materials is listed on this page.

Where can I download the Smu main 1 design files?

From the jaromir-sukuba/J-SMU repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the Smu main 1 design in my own project?

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

Can I test firmware for the Smu main 1 without the hardware?

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

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