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Ogham merged v1.0

keeos-io·ogham·hardware/ogham-merged-v1.0/ogham-merged-v1.0.kicad_pcb

Ogham merged v1.0 PCB layout, top view — open source board by keeos-io
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About the Ogham merged v1.0 PCB

Ogham merged v1.0 is an open source PCB design by keeos-io, published on GitHub under the Custom license license. It is a 2-layer board measuring 50 × 110 mm, with 108 components from 43 distinct parts.

Other key parts include the LM4040-5.0, L7805, MCP6004, TL072 and 74AHCT1G125. By type, the board carries 10 capacitors, 9 resistors, 8 diodes, 7 ICs, 2 inductors and 1 module.

It belongs with the audio designs in this gallery.

From the project

Ogham — a dual-voice bytebeat synthesizer for Eurorack. Firmware (MIT) and hardware (CC BY-SA 4.0).

KiCad 10 sources and a ready-to-upload fabrication package for the shipping board revision, ogham-merged-v1.0.

Only this revision is published. Earlier prototypes (ogham-logic, ogham-ui and their v0.2 iterations) are not included, so there is nothing here to fabricate by mistake.

The schematic is a two-level hierarchy: ogham-merged-v1.0 is the root, and it pulls in ogham-logic-v2.0 (→ power, MCU, CV I/O) and ogham-ui-v0.2 (→ audio, UI). Those two keep the sheet names they had when the design was two separate boards — they are not old revisions, they are live sub-sheets of this one.

Main components on the Ogham merged v1.0

LM4040-5.0L7805MCP6004TL07274AHCT1G125LM393ELECTROSMITH_DAISY_SEED_REV4

Ogham merged v1.0 bill of materials (BOM)

108 components, 43 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
LM4040-5.0
U1
1
L7805
U2
1
MCP6004
U3
2
TL072
U4, U7
1
74AHCT1G125
U5
1
LM393
U6
1
ELECTROSMITH_DAISY_SEED_REV4
Electrosmith_Daisy_Seed_Rev4
A1
1
MMBT3904
Q1
1
Eurorack_Power
J1
2
2.2nF
C_FILT1, C_FILT2
14
100nF
C_TL1, C_TL2, C_byp_U3, C_byp_U4n1, C_byp_U4p1, C_byp_U5, C_byp_U6, C_enc_a1 +6
3
1nF
C_fb_a1, C_fb_b1, C_voct_adc1
2
BAT54WS
D_oct1, D_oct2
4
AudioJack2_SwitchT
J_clk1, J_cva1, J_cvb1, J_gate_in1
1
CV_OUT
J_cv_out1
1
TM1637
J_disp1
1
GATE_OUT
J_gate_out1
1
OUT1
J_out1
1
OUT2
J_out2
2
10K
10k
RVA1, RVB1
Show 23 more
QtyPartRefs
2
10k
RVLevel1, RVRate1
9
10k
R_F1, R_F2, R_clk_in1, R_clk_pu1, R_cv_gnd1, R_dio1, R_div1, R_div2 +1
2
470
R_FILT1, R_FILT2
2
2.7k
R_G1, R_G2
9
1k
R_OUT1, R_OUT2, R_cv_out1, R_flt1, R_flt2, R_flt3, R_flt4, R_gout1 +1
1
20k
R_cv_fb1
8
100k
R_fb_a1, R_fb_b1, R_gate_in1, R_hys1, R_pd1, R_pd2, R_pd3, R_pd4
1
33k
R_gate_div1
1
18k
R_voct2
1
Encoder
SW_enc1
1
SW_SPDT
SW_mode1
3
SS14
D1, D2, D8
1
1N4148
D3
2
BAT54WS
D4, D5
2
1N5819WS
D6, D7
2
BLM18PG121
FB1, FB2
3
10UF
10uF
C1, C2, C10
6
100NF
100nF
C3, C4, C6, C7, C8, C9
1
10UF
10uF
C5
1
10K
10k
R1
4
100K
100k
R2, R5, R8, R9
2
470K
470k
R3, R6
2
200K
200k
R4, R7

Ogham merged v1.0 design files

The KiCad project lives in the keeos-io/ogham repository on GitHub; these links point at the commit this page was built from.

Ogham merged v1.0: common questions

How big is the Ogham merged v1.0 PCB?

The Ogham merged v1.0 measures 50 × 110 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Ogham merged v1.0?

108 components, from 43 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 Ogham merged v1.0 design files?

From the keeos-io/ogham repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the Ogham merged v1.0 design in my own project?

It is published under Custom license, which limits how it may be reused; read the license before building on it.

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