HardLabs

Bkm-129x simple

skumlos·bkm-129x-simple

Bkm-129x simple PCB layout, top view — open source AVR/Arduino board by skumlos

About the Bkm-129x simple PCB

Bkm-129x simple is an open source AVR/Arduino PCB design by skumlos, published on GitHub under the WTFPL license. It is a 2-layer board measuring 105 × 89.3 mm, with 55 components from 23 distinct parts.

Its main chip is the ARDUINO-NANO-V3, from the AVR/Arduino family. Other key parts include the ADG1611, THS7374, 74VHC125 and MIC3490-3.3. By type, the board carries 31 resistors, 13 capacitors, 5 ICs, 5 connectors and 1 transistor.

From the project

A simplified BKM-129X compatible board

A simplified version of the BKM-129X compatible board.

Should be able to be created at $25-30, with the ADG1611 being the most expensive component.

This requires an Arduino Nano v3 loaded with the latest BKM-129X-MCU code from https://github.com/skumlos/bkm-129x-mcu

For more information go to https://immerhax.com/?p=422

You are welcome to clone, produce and sell hardware based on this. Please keep changes and so on open source.

Main components on the Bkm-129x simple

ADG1611THS7374ARDUINO-NANO-V374VHC125MIC3490-3.3

Bkm-129x simple bill of materials (BOM)

55 components, 23 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
ADG1611
U1
1
THS7374
U2
1
ARDUINO-NANO-V3
arduino-nano-v3
U3
1
74VHC125
74LVC125
U4
1
MIC3490-3.3
U5
1
DTC144EKA
Q1
1
YG1
J1
1
PBB1
J2
1
PRR1
J3
1
SYNC1
J4
1
CONN_02X32_ROW_LETTER_LAST
Conn_02x32_Row_Letter_Last
J5
8
0.1UF
0.1uF
C1, C2, C3, C4, C5, C6, C9, C12
3
100UF
100uF
C7, C8, C13
1
2.2UF
2.2uF
C10
1
1UF
1uF
C11
2
10K
R1, R18
8
R
R2, R3, R4, R5, R14, R15, R16, R17
6
150R
R6, R7, R8, R29, R30, R31
1
0R
R9
4
75R
R10, R11, R12, R13
Show 3 more
QtyPartRefs
2
4K7
R19, R23
4
100K
R20, R22, R25, R27
4
100R
R21, R24, R26, R28

Bkm-129x simple design files

The KiCad project lives in the skumlos/bkm-129x-simple repository on GitHub; these links point at the commit this page was built from.

Bkm-129x simple: common questions

What microcontroller does the Bkm-129x simple use?

The Bkm-129x simple is built around the ARDUINO-NANO-V3, from the AVR/Arduino family.

How big is the Bkm-129x simple PCB?

The Bkm-129x simple measures 105 × 89.3 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Bkm-129x simple?

55 components, from 23 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 Bkm-129x simple design files?

From the skumlos/bkm-129x-simple repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.

Can I use the Bkm-129x simple design in my own project?

Yes, under the terms of its WTFPL license, which skumlos chose for the repository.

Can I test firmware for the Bkm-129x simple 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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