HardLabs

EL driver multi

benkrasnow·EL_driver_multi·KiCAD - PCB/EL_driver_multi.kicad_pcb

EL driver multi PCB layout, top view — open source Microchip SAM board by benkrasnow

About the EL driver multi PCB

EL driver multi is an open source Microchip SAM PCB design by benkrasnow, published on GitHub. It is a board measuring 66.5 × 32.5 mm, with 33 components from 24 distinct parts.

Its main chip is the ATSAMD21E, from the Microchip SAM family. Other key parts include the HV513, LT3468, AP2204K-3.3, AP2204K-5.0 and HV507. By type, the board carries 9 capacitors, 7 ICs, 4 connectors, 4 diodes, 4 resistors and 1 transistor.

It belongs with the displays & leds designs in this gallery.

From the project

Schematic, PCB, and firmware to build a multi-channel electroluminescent driver

The MCU must be programmed with Adafruit's bootloader. The programming pins are exposed on this PCB, but a potentially easier way is to buy a Trinket M0, and use a hotplate to remove the MCU, button, decoupling caps, LEDs current-limiting resistors and USB connector, and add those parts to this PCB.

The firmware for the driving of linear display elements (ELarraylinear) is pretty stable and well-commented. The firmware for matrix driving (ELarraymatrix) is much more experimental. It's accompanying Processing.org sketch is also a pretty hacked mod of Paul Stoffregen's original OctoWS2811…

EL driver multi, from the project README
From the project README

Main components on the EL driver multi

ATSAMD21EHV513LT3468AP2204K-3.3AP2204K-5.0HV507

EL driver multi bill of materials (BOM)

33 components, 24 distinct parts.

QtyPartRefs
1
ATSAMD21E
IC3
1
HV513
U1
2
LT3468
U2, U6
1
AP2204K-3.3
U3
1
AP2204K-5.0
U4
1
HV507
U5
1
reset
Q2
1
4U#20329
CN1
2
Conn_01x20_Female
J1, J2
1
Conn_01x24_Female
J3
2
ATB3225
TR1, TR2
1
green
PWR1
2
B0540W
D1, D2
2
MMBD5004S
D3, D4
1
red
L1
3
10uF
C1, C7, C8
2
1uF
C2, C3
1
2.2uF
C4
2
6.3uF
C5, C9
1
0.1uF
C6
Show 4 more
QtyPartRefs
1
1.5K
R1
1
10M
R2
1
100K
R3
1
10K
R4

EL driver multi design files

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

EL driver multi: common questions

What microcontroller does the EL driver multi use?

The EL driver multi is built around the ATSAMD21E, from the Microchip SAM family.

How big is the EL driver multi PCB?

The EL driver multi measures 66.5 × 32.5 mm and is 1.6 mm thick.

How many components are on the EL driver multi?

33 components, from 24 distinct parts. The full bill of materials is listed on this page.

Where can I download the EL driver multi design files?

From the benkrasnow/EL_driver_multi repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the EL driver multi design in my own project?

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

Can I test firmware for the EL driver multi without the hardware?

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

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