OTS2
About the OTS2 PCB
OTS2 is an open source PCB design by wyolum, published on GitHub under the MIT license. It is a 2-layer board measuring 134.6 × 73.7 mm, with 94 components from 41 distinct parts.
Other key parts include the EZbluefruit, LCD_TFT, FeatherM0 and ProMini. By type, the board carries 14 connectors, 14 resistors, 13 capacitors, 4 ICs, 3 switches and 1 jumper.
It belongs with the keyboards and iot & wireless designs in this gallery.
From the project
Minimal Bluetooth Keyboard with rotary controller
[CERN Open Hardware Licence v1.2 ]:http://www.ohwr.org/attachments/2388/cernohlv12.txt
Main components on the OTS2
OTS2 bill of materials (BOM)
94 components, 41 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | EZbluefruit | EZ_bluefruit | U7 |
| 1 | LCD_TFT | LCD_TFT | U8 |
| 1 | FeatherM0 | FeatherM0 | U9 |
| 1 | ProMini | Pro_Mini_alt2 | U10 |
| 1 | LCD_Lite | SMD_Jumper_2way | J1 |
| 1 | ENC_C_1 | Pin_Header_Straight_1x02 | P1 |
| 1 | ENC_C_2 | Pin_Header_Straight_1x02 | P2 |
| 1 | ENC_C_3 | Pin_Header_Straight_1x02 | P3 |
| 2 | ENC_C_4 | Pin_Header_Straight_1x02 | P4, P13 |
| 1 | ENC_A_1 | Pin_Header_Straight_1x02 | P5 |
| 1 | ENC_A_2 | Pin_Header_Straight_1x02 | P6 |
| 1 | ENC_A_3 | Pin_Header_Straight_1x02 | P7 |
| 1 | ENC_A_4 | Pin_Header_Straight_1x02 | P8 |
| 1 | ENC_B_1 | Pin_Header_Straight_1x02 | P9 |
| 1 | ENC_B_2 | Pin_Header_Straight_1x02 | P10 |
| 1 | ENC_B_3 | Pin_Header_Straight_1x02 | P11 |
| 1 | ENC_B_4 | Pin_Header_Straight_1x02 | P12 |
| 2 | ENC_C | TSWB3NCB222LFS | E1, eE1 |
| 2 | ENC_A | TSWA3NCD23LFS | E3, eE3 |
| 2 | ENC_B | TSWA3NCD23LFS | E4, eE4 |
Show 21 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | En_Rx/Tx | DIP_2way | JP1 |
| 1 | M0_RST | SW_SMD | S1 |
| 1 | ON_OFF | SW_SPST | S2 |
| 1 | PAIR | SW_SMD | S3 |
| 13 | 1uF | C_1210_HandSoldering | eC1, eC2, eC3, eC4, eC5, eC6, eC7, eC29 +5 |
| 1 | ENC_C_1 | Pin_Header_Straight_1x02 | eP1 |
| 1 | ENC_C_2 | Pin_Header_Straight_1x02 | eP2 |
| 1 | ENC_C_3 | Pin_Header_Straight_1x02 | eP3 |
| 1 | ENC_C_4 | Pin_Header_Straight_1x02 | eP4 |
| 1 | ENC_A_1 | Pin_Header_Straight_1x02 | eP5 |
| 1 | ENC_A_2 | Pin_Header_Straight_1x02 | eP6 |
| 1 | ENC_A_3 | Pin_Header_Straight_1x02 | eP7 |
| 1 | ENC_A_4 | Pin_Header_Straight_1x02 | eP8 |
| 1 | ENC_B_1 | Pin_Header_Straight_1x02 | eP9 |
| 1 | ENC_B_2 | Pin_Header_Straight_1x02 | eP10 |
| 1 | ENC_B_3 | Pin_Header_Straight_1x02 | eP11 |
| 1 | ENC_B_4 | Pin_Header_Straight_1x02 | eP12 |
| 1 | ENC_C_5 | Pin_Header_Straight_1x02 | eP13 |
| 13 | 10k | R_1210_HandSoldering | eR2, eR3, eR4, eR5, eR6, eR7, eR8, eR21 +5 |
| 13 | 1uF | C_1210_HandSoldering | C1, C2, C3, C4, C5, C6, C7, C29 +5 |
| 14 | 10k | R_1210_HandSoldering | R1, R2, R3, R4, R5, R6, R7, R8 +6 |
OTS2 design files
The KiCad project lives in the wyolum/VeloKey repository on GitHub; these links point at the commit this page was built from.
OTS2: common questions
How big is the OTS2 PCB?
The OTS2 measures 134.6 × 73.7 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the OTS2?
94 components, from 41 distinct parts. The full bill of materials is listed on this page.
Where can I download the OTS2 design files?
From the wyolum/VeloKey repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the OTS2 design in my own project?
Yes, under the terms of its MIT license, which wyolum chose for the repository.
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