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Printalyzer Densitometer - Main Board

dektronics·printalyzer-densitometer·hardware/main-board/main-board.kicad_pcb

Printalyzer Densitometer - Main Board layout, top view — open source STM32 board by dektronics

About the Printalyzer Densitometer - Main Board

Printalyzer Densitometer - Main Board is an open source STM32 PCB design by dektronics, published on GitHub. It is a 4-layer board measuring 105 × 38 mm, with 76 components from 30 distinct parts.

Its main chip is the STM32L072KZT6, from the STM32 family. Other key parts include the TSL2591, AP2502, USBLC6-2SC6 and RT9193. By type, the board carries 24 capacitors, 22 resistors, 12 diodes, 6 ICs, 6 switches and 3 connectors.

From the project

Reflection and Transmission Densitometer for Photographic Darkroom Use

The Printalyzer Densitometer is a project whose goal is the creation of an affordable reflection and transmission densitometer for photographic darkroom use.

It was initially conceived as an accessory to complement the Printalyzer Enlarging Timer & Exposure Meter to ease the process of creating paper profiles. However, given the general utility of such a device, it has been spun off as a separate project in its own right.

Printalyzer Densitometer - Main Board, from the project README
From the project README

Main components on the Printalyzer Densitometer - Main Board

TSL2591STM32L072KZT6AP2502USBLC6-2SC6RT9193

Printalyzer Densitometer - Main Board bill of materials (BOM)

76 components, 30 distinct parts.

QtyPartRefs
1
TSL2591
ams
U1
1
STM32L072KZT6
STMicroelectronics
U2
2
AP2502
Diodes Incorporated
U3, U6
1
USBLC6-2SC6
STMicroelectronics
U4
1
RT9193
Richtek USA Inc.
U5
1
USB_C_Receptacle_USB2.0
GCT
J1
1
Display Connector
EastRising
J3
1
Conn_01x02
JST Sales America Inc.
J4
1
250mA
Littelfuse
F1
4
SW_Push
E-Switch
SW1, SW2, SW3, SW4
1
SW_Detect
C&K
SW5
1
SW_Boot
Panasonic Electronic Components
SW6
4
LED
Würth Elektronik
D1, D2, D3, D4
7
uClamp0501H
Semtech
D5, D6, D7, D9, D10, D11, D12
1
ESDALC6V1W5
STMicroelectronics
D8
2
600R@100MHz
TDK Corporation
FB1, FB2
1
1uF
Samsung Electro-Mechanics
C1
1
10uF
Samsung Electro-Mechanics
C2
11
0.1uF
Samsung Electro-Mechanics
C3, C4, C5, C7, C8, C9, C10, C18 +3
7
1uF
Samsung Electro-Mechanics
C6, C11, C12, C14, C15, C16, C17
Show 10 more
QtyPartRefs
1
22nF
TDK Corporation
C13
1
2.2uF
Samsung Electro-Mechanics
C19
2
4.7uF
Samsung Electro-Mechanics
C20, C24
1
22R
Yaego
R1
6
330R
Yaego
R2, R4, R9, R12, R14, R17
5
100K
Yaego
R3, R5, R11, R13, R15
5
10K
Yaego
R6, R16, R20, R21, R22
2
2K
Vishay Intertech
R7, R8
1
390K
Yaego
R10
2
5.1k
Yaego
R18, R19

Printalyzer Densitometer - Main Board design files

The KiCad project lives in the dektronics/printalyzer-densitometer repository on GitHub; these links point at the commit this page was built from.

Printalyzer Densitometer - Main Board: common questions

What microcontroller does the Printalyzer Densitometer - Main Board use?

The Printalyzer Densitometer - Main Board is built around the STM32L072KZT6, from the STM32 family.

How big is the Printalyzer Densitometer - Main Board?

The Printalyzer Densitometer - Main Board measures 105 × 38 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the Printalyzer Densitometer - Main Board?

76 components, from 30 distinct parts. The full bill of materials is listed on this page.

Where can I download the Printalyzer Densitometer - Main Board design files?

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

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

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

Can I test firmware for the Printalyzer Densitometer - Main Board without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug STM32 firmware against it before you order a PCB.

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