HardLabs

Vend matrix

CCHS-Melbourne·vend-matrix·circuit/multiplex_driver.kicad_pcb

Vend matrix PCB layout, top view — open source AVR/Arduino board by CCHS-Melbourne

About the Vend matrix PCB

Vend matrix is an open source AVR/Arduino PCB design by CCHS-Melbourne, published on GitHub. It is a 2-layer board measuring 133 × 53.9 mm, with 47 components from 32 distinct parts.

Its main chip is the ARDUINO_SHIELD, from the AVR/Arduino family. Other key parts include the 74HC595-16-PIN, TD62783AFNG, ULN2803A, INA282 and LM317T. By type, the board carries 18 resistors, 9 ICs, 9 connectors, 5 capacitors, 2 transistors and 2 diodes.

It belongs with the robotics & motion designs in this gallery.

From the project

This is the CCHS Vending Machine motor controller.

Main components on the Vend matrix

74HC595-16-PINTD62783AFNGULN2803AINA282LM317TCD4021B

Vend matrix bill of materials (BOM)

47 components, 32 distinct parts.

QtyPartRefs
3
74HC595-16-PIN
U1, U2, U3
1
TD62783AFNG
U4
2
ULN2803A
U5, U6
1
INA282
U7
1
LM317T
U8
1
CD4021B
U9
2
BC546A
Q1, Q2
1
Keypad
P1
1
I2C
P2
1
+5V
P3
1
Anodes
P4
1
Cathode 1-8
P5
1
Cathode 9-16
P6
1
Serial
P7
1
+24V
P8
1
pr28v
P9
1
ARDUINO_SHIELD
SHIELD1
1
RESET
SW1
1
LED
D1
1
1N4004
D2
Show 12 more
QtyPartRefs
1
1uf
C1
1
0.1uf
C2
1
100uF/50V
C3
1
0.01uF/50V
C4
1
0.1uf/50V
C5
3
1K
R1, R3, R6
1
10K
R2
2
5K
R4, R8
1
4k7
R5
1
240R
R7
2
1R0
R9, R10
8
10K
R11, R12, R13, R14, R15, R16, R17, R18

Vend matrix design files

The KiCad project lives in the CCHS-Melbourne/vend-matrix repository on GitHub; these links point at the commit this page was built from.

Vend matrix: common questions

What microcontroller does the Vend matrix use?

The Vend matrix is built around the ARDUINO_SHIELD, from the AVR/Arduino family.

How big is the Vend matrix PCB?

The Vend matrix measures 133 × 53.9 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Vend matrix?

47 components, from 32 distinct parts. The full bill of materials is listed on this page.

Where can I download the Vend matrix design files?

From the CCHS-Melbourne/vend-matrix repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the Vend matrix design in my own project?

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

Can I test firmware for the Vend matrix 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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