
Teensy eurorack
newdigate/teensy-eurorack
Hardware Design: Eurorack shield for teensy 4.1 with 14 in / 16 out analog channels

My attempt at turning the Akai fire midi controller into a stand alone midi sequencer.
AkaiFireSequener is an open-source printed circuit board by halfordC, from the halfordC/AkaiFireSequencer repository on GitHub. It is a 2-layer board of 63 × 76 mm with 23 parts on 86 nets, routed with 135 tracks and 19 vias.
It is built around the TEENSY 4.1. Its parts include 8 resistors, 5 connectors, 3 ICs, 2 capacitors and 2 diodes. It belongs with the NXP (LPC, Kinetis, i.MX RT) boards of this library.
| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | 47 | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P2.54mm_Vertical | R1, R2, R3, R4 |
| 4 | DIN-5_180degree | Eurocad:MIDI_DIN5 | J2, J3, J4, J5 |
| 3 | MountingHole_Pad | MountingHole:MountingHole_3.2mm_M3_Pad | H1, H1, H4 |
| 2 | 0.1uF | Capacitor_THT:C_Disc_D4.3mm_W1.9mm_P5.00mm | C1, C2 |
| 2 | 1N4148 | Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal | D1, D2 |
| 2 | 220 | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P2.54mm_Vertical | R5, R6 |
| 2 | 470 | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P2.54mm_Vertical | R7, R8 |
| 2 | 6N138 | Package_DIP:DIP-8_W7.62mm_Socket | U2, U3 |
| 1 | Teensy4.1 | Teensy Models:Teensy41 | U1 |
| 1 | USB_A | Connector_USB:USB_A_Stewart_SS-52100-001_Horizontal | J1 |
It measures 63 × 76 mm and has 2 copper layers, 1.6 mm thick.
23 parts, built around the TEENSY 4.1. 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 halfordC/AkaiFireSequencer repository on GitHub, at the commit this page was made from: the board is AkaiFireSequener/AkaiFireSequener.kicad_pcb and its schematic AkaiFireSequener/AkaiFireSequener.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Its repository states no licence, so its author keeps all rights: ask halfordC before reusing the design.

newdigate/teensy-eurorack
Hardware Design: Eurorack shield for teensy 4.1 with 14 in / 16 out analog channels





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