HardLabs

CosSin

cybaer·CosSin·HW/CosSin.kicad_pcb

CosSin PCB layout, top view — open source AVR/Arduino board by cybaer

About the CosSin PCB

CosSin is an open source AVR/Arduino PCB design by cybaer, published on GitHub. It is a 2-layer board measuring 100 × 60 mm, with 50 components from 20 distinct parts.

Its main chip is the ATmega328P-PU, from the AVR/Arduino family. Other key parts include the LM1876 and LM7805_TO220. By type, the board carries 16 capacitors, 15 resistors, 3 ICs, 2 transistors, 2 diodes and 1 crystal.

From the project

suitable for Thorens TD14x/TD16x with 16V motors supplies a perfectly sinusoidal voltage electronic switching between 33 1/3 and 45 rpm fine adjustment for speed and phase position smooth start/brake and transition to another speed automatic switch-off after 25 or 15 minutes

Main components on the CosSin

LM1876ATmega328P-PULM7805_TO220

CosSin bill of materials (BOM)

50 components, 20 distinct parts.

QtyPartRefs
1
LM1876
U1
1
ATmega328P-PU
U2
1
LM7805_TO220
U3
2
BC547
Q1, Q2
1
Crystal
Y1
1
AVR-ISP-6
J1
2
Screw_Terminal_01x03
2x20V1, Out1
2
Screw_Terminal_01x02
8V1, RPM1
1
Conn_01x06
Encoder1
3
Conn_01x03
LEDs1, Taster1, Taster2
2
100K
RV1, RV2
2
D_Bridge_+A-A
D1, D2
6
10µ
C1, C5, C6, C11, C12, C15
2
2200µ/50V
C2, C3
6
100n
C4, C7, C8, C9, C10, C16
2
22p
C13, C14
5
100K
R1, R4, R5, R6, R14
5
10K
R2, R7, R8, R13, R15
3
1K
R3, R9, R10
2
22K
R11, R12

CosSin design files

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

CosSin: common questions

What microcontroller does the CosSin use?

The CosSin is built around the ATmega328P-PU, from the AVR/Arduino family.

How big is the CosSin PCB?

The CosSin measures 100 × 60 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the CosSin?

50 components, from 20 distinct parts. The full bill of materials is listed on this page.

Where can I download the CosSin design files?

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

Can I use the CosSin design in my own project?

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

Can I test firmware for the CosSin 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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