OTTO-power
About the OTTO-power PCB
OTTO-power is an open source PCB design by cester-ino, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 72.5 × 23.5 mm, with 45 components from 30 distinct parts.
Other key parts include the MAX8903A, MAX17048, TPS61090 and XC6210. By type, the board carries 15 capacitors, 15 resistors, 4 ICs, 4 connectors, 3 diodes and 2 switches.
It belongs with the audio and power & battery designs in this gallery.
From the project
those specs refer to the tactile buttons version, but a led backlight button version is in the works too.
Main components on the OTTO-power
OTTO-power bill of materials (BOM)
45 components, 30 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | MAX8903A | QFN-28-1EP_4x4mm_P0.4mm_EP2.4x2.4mm_ThermalVias | U1 |
| 1 | MAX17048 | TDFN-8-1EP | U2 |
| 1 | TPS61090 | QFN-16-1EP_4x4mm_P0.65mm_EP2.5x2.5mm | U3 |
| 1 | XC6210 | SOT25 | U4 |
| 1 | Barrel_Jack | BarrelJack_CUI_PJ-102AH_Horizontal | J1 |
| 1 | Conn_01x10 | PinSocket_1x10_P2.54mm_Vertical | J2 |
| 1 | USB_B_Micro | USB_Micro-B_Molex-105017-0001 | J3 |
| 1 | battery | JST_XH_B02B-XH-A_1x02_P2.50mm_Vertical | J4 |
| 1 | SW_Push | SKHHLVA010 | SW1 |
| 1 | SW_reset | SW_SPST_B3U-3000P | SW2 |
| 3 | IN4001 | D_SOD-123F | D1, D2, D3 |
| 1 | 3.3uH | L_Wuerth_MAPI-4020 | L1 |
| 1 | 6.8uH | L_Wuerth_MAPI-4020 | L2 |
| 3 | 2.2uf | C_0805_2012Metric | C1, C6, C9 |
| 1 | 1uf | C_0805_2012Metric | C2 |
| 3 | 10uf | C_0805_2012Metric | C3, C4, C11 |
| 1 | 4.7uf | C_0805_2012Metric | C5 |
| 1 | 0.15uf | C_0805_2012Metric | C7 |
| 3 | 0.1uf | C_0805_2012Metric | C8, C12, C14 |
| 1 | 100uf | CP_EIA-3528-21_Kemet-B | C10 |
Show 10 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 10uf | CP_EIA-3216-18_Kemet-A | C13 |
| 1 | 100uf | C_0805_2012Metric | C15 |
| 5 | 100K | R_0805_2012Metric | R1, R2, R5, R6, R14 |
| 1 | 1.2K | R_0805_2012Metric | R3 |
| 1 | 3K | R_0805_2012Metric | R4 |
| 2 | 200K | R_0805_2012Metric | R7, R10 |
| 2 | 1.87M | R_0805_2012Metric | R8, R9 |
| 1 | 340K | R_0805_2012Metric | R11 |
| 2 | 10K | R_0805_2012Metric | R12, R13 |
| 1 | 1K | R_0805_2012Metric | R15 |
OTTO-power design files
The KiCad project lives in the cester-ino/OTTO-hardware repository on GitHub; these links point at the commit this page was built from.
OTTO-power: common questions
How big is the OTTO-power PCB?
The OTTO-power measures 72.5 × 23.5 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the OTTO-power?
45 components, from 30 distinct parts. The full bill of materials is listed on this page.
Where can I download the OTTO-power design files?
From the cester-ino/OTTO-hardware repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the OTTO-power design in my own project?
Yes, under the terms of its GPL-3.0 license, which cester-ino chose for the repository.
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