HardLabs

41 1350

cyril279·keyboards·revlp/41_1350/41_1350_pcb/41_1350_pcb.kicad_pcb

41 1350 PCB layout, top view — open source AVR/Arduino board by cyril279
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About the 41 1350 PCB

41 1350 is an open source AVR/Arduino PCB design by cyril279, published on GitHub under the MIT license. It is a 2-layer board measuring 238.7 × 95.3 mm, with 131 components from 11 distinct parts.

Its main chip is the C32574, from the AVR/Arduino family. By type, the board carries 41 LEDs, 2 switches, 1 IC, 1 transistor, 1 battery holder and 1 resistor.

It belongs with the keyboards designs in this gallery.

From the project

Mechanical & electronic layouts were performed in fusion360 & kicad (respectively).

Mechanical & electronic layouts were performed in fusion360 & kicad (respectively).

Backlighting notes: 1. The resistor value needed is determined by specific characteristics of the led's chosen, as well as the voltage supplied by the controller. The specific characteristics can differ for various types and colors of led's. 2. Use an led calculator to determine the resistor value (all ⅛ watt): Recommendation: Use minimum resistor needed to protect led, then limit brightness via BACKLIGHTLIMITVAL to limit the max to a reasonable value (PWM manged, so more power efficient) 3. VCC voltage is…

41 1350, from the project README
From the project README

Main components on the 41 1350

C32574

41 1350 bill of materials (BOM)

131 components, 11 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
C32574
ProMicro
U1
1
C15127
AO3416 N-channel MOSFET
Q1
1
Battery_Cell
BT01
41
D
D_A0, D_A1, D_A2, D_A3, D_A4, D_A5, D_B0, D_B1 +33
1
Choc
Kailh PG1350
41
R
R_A0, R_A1, R_A2, R_A3, R_A4, R_A5, R_B0, R_B1 +33
1
SW_SPDT
SW01
1
SW_Push
SW02
1
rev41lp_edgecutPCB
rev41lp_edgecutPCB
41
SW_Push
SwA0, SwA1, SwA2, SwA3, SwA4, SwA5, SwB0, SwB1 +33
1
4.7k 0204
R80

41 1350 design files

The KiCad project lives in the cyril279/keyboards repository on GitHub; these links point at the commit this page was built from.

41 1350: common questions

What microcontroller does the 41 1350 use?

The 41 1350 is built around the C32574, from the AVR/Arduino family.

How big is the 41 1350 PCB?

The 41 1350 measures 238.7 × 95.3 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the 41 1350?

131 components, from 11 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the 41 1350 design files?

From the cyril279/keyboards repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.

Can I use the 41 1350 design in my own project?

Yes, under the terms of its MIT license, which cyril279 chose for the repository.

Can I test firmware for the 41 1350 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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