
Ultra DB X51 v1
ExploreEmbedded/8051_DevelopmentBoard
Design files and sample code for 8051 development Ultra Boards

Drumseq is an open-source printed circuit board by interspecifics, from the interspecifics/IntrumentosAutomaticos repository on GitHub. It is a 2-layer board of 46 × 35.6 mm with 10 parts on 15 nets, routed with 137 tracks and 2 vias.
It is built around the L293D. Its parts include 3 connectors, 2 resistors, 2 diodes, 1 IC and 1 switch.
| Qty | Value | Footprint | References |
|---|---|---|---|
| 2 | 330 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1, R2 |
| 2 | LED | LED_THT:LED_D5.0mm_FlatTop | D1, D2 |
| 2 | POW | TerminalBlock:TerminalBlock_bornier-2_P5.08mm | J1, J2 |
| 1 | Conn_01x06_Male | Connector_PinHeader_2.54mm:PinHeader_1x06_P2.54mm_Vertical | J3 |
| 1 | L293D | Package_DIP:DIP-16_W7.62mm | U1 |
| 1 | SWITCH | Button_Switch_THT:SW_CuK_JS202011CQN_DPDT_Straight | SW1 |
| 1 | Stepper_Motor_bipolar | TerminalBlock:TerminalBlock_bornier-4_P5.08mm | M1 |

ExploreEmbedded/8051_DevelopmentBoard
Design files and sample code for 8051 development Ultra Boards

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It measures 46 × 35.6 mm and has 2 copper layers, 1.6 mm thick.
10 parts, built around the L293D. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
From the interspecifics/IntrumentosAutomaticos repository on GitHub, at the commit this page was made from: the board is electronics/drumseq/drumseq.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Its repository states no licence, so its author keeps all rights: ask interspecifics before reusing the design.