dsp.coffee dpt - multifunction electron temple

** Module availablr, built to order. **

electrosmith daisy patch submodule based development platform

• 8 pots normalled to 0V - +5V.
• 8 CV in, this breaks normalled connection and pot acts as an attenuator.
• 2 gate in
• 2 gate out
• High fidelity stereo in/out (Daisy Patch Submodule uses the PCM3080 codec).
• 2 12-bit CV out from Daisy Patch Submodule, scaled to -5v to 10v
• 4 12-bit CV (or lofi audio w/ some hacking) from external DAC7554, scaled to -7v to 7v.
• TRS MIDI in/out (midi in uses lpzw auto-sensing circuit for type a/b)
• SD card slot.
• Expander header on the back for +5v, +3v3, SPI, UART, I2C, and USB connections. [Two expanders have been prototyped now, one with two tact switches and USB port, one with LED controller + 5 RGB leds and 4 tact switches]

Output scaling circuits for DAC7554 and TRS MIDI are based on portions of https://github.com/plinkysynth/plinky-expander

Additional References

• https://www.electro-smith.com/daisy/patch-sm
• https://electro-smith.github.io/DaisySP/index.html
• https://electro-smith.github.io/libDaisy/index.html

Thx

• https://github.com/makingsoundmachines
• https://github.com/thisisnotrocketscience
• https://github.com/mmalex

BOM

|Designator|Package |Quantity |Designation|Supplier and ref | |----------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-------------------------------------------|-----------|----------------------| |LED3,LED4 |3mm LED |2 || | |J*|Mono Thonkiconn |22 |JMIDIIN, JMIDIOUT|Stereo (Green) Thonkiconn |2
|VRCV*|9mm Potentiometer (Alpha / Alps) |8 |10K | | |D4,D6,D5,D3,D8,D7|3mm LED (Bipolar Red / Green) |6 |LED_Dual_Bidirectional|Tayda | |U_SDCARD1 |VERT_MICROSD_CENTERED |1 || Mouser 945-PJS008U-3000-0 / Thonk | |U9 |Electrosmith Daisy Patch Submodule |1 |ES_DAISY_PATCH_SM_REV1| | https://www.electro-smith.com/daisy/patch-sm |R36,R35,R18,R16, R17,R19|0603 |6 |1k | | |U11,U5,U10,U3, U6,U4|SOIC-8 |6 |TL072 | | |C5,C4 |0603 |2 |100n | | |R9,R11,R10,R8|0603 |4 |56k | | |C2,C3 |C_Elec_4x5.4 |2 |47u | | |J_I2C1 |2x03 2.54mm_Vertical |1 || | |C11,C12,C13,C10,C18,C17|0603 |6 |1n | | |R22,R4,R7,R20,R29, R30,R2,R6,R5|0603 |9 |10k | | |C14,C16,C6,C7, C1,C8,C15,C9|0603 |8 |100n | | |R26,R34,R15,R24, R33,R28,R27,R14, R13,R25,R12|0603 |11 |220R | | |J14 |2x05 P2.54mm Vertical |1 || | |U2 |DAC7554IDGS |1 || | |R32,R31 |0603 |2 |30k | | |R23,R21 |0603 |2 |4.7k | | |U8 |HCPL-0631 SOIC-8 |1 | | | |U1 |LM4040DBZ-2.5 SOT-23 |1 || | |J_EXPANDER2|2x08 P2.54mm Vertical |1 |USB_SPI_MUX_EXPANDER| | |R1 |0603 |1 |3k | | |D2,D1 |1N1517 SOD-323 |2 | | | |R3 |0603 |1 |7.5k | | |U7 |SN74LVC1G17DBV