fricko diy eurorack modules
Tame and Duck are now available.They both use the same PCB: it is a blue ROHS board marked as "Rev 0". The panel is reversable: one side is for Tame, the other for Duck. There are no known errors on the Rev 0 board. Modification There is a circuit improvement related to predictability, detailed in …
Continue reading "Duck/Tame Release and Build Notes: Rev 0 PCB"
The Rev 1 PCB is a blue ROHS-compliant PCB. There are a few recommended improvements for the board (as at Jan 8, 2021). *Some will be migrated to the BOM. Recommend using dual op-amp with no phase-reversal lockup issue, so NE5532 instead of TL072, especially for U2 and U4. (If NE5532 is used, the value …
The PCB provides positions for many extra components that are not needed for the standard build. These are to allow non-standard values, for builders who want different formant centres (e.g. to build a fixed string filter array.) Instead of series resistors R14a1 and R26, you MUST put in a link. Omit the parallel resistors R15a1, …
Components do not need to be exact, well-matched or hi-fi types for this application. MOTMPower connector not needed for Eurorack builds. TL072 fine as dual op-amp. BC550 or BC54* or similar good for NPN transistors, especially C class. (The Blat board is 95% similar to the Blip! board, a schematic for a prototype of the …
The Rev 1 PCB is a blue ROHS-compliant board. It has "Rev 1" on the back. There is an overprinted label for R33 (lower) and R37 (higher). If no Gate input is plugged in, the module will use the Gate signal on the Eurorack bus. If you do not want this behaviour, build the module …
The Rev1 PCB is a blue ROHS board with "Rev 1" on the back. There is a single required fix with potentiometer R8, two links to be installed, and numerous component positions that should not be installed. There is one capacitor with a missing label: C12 (far right below, above R12.) Correction: Jan 2023 R23a1 …
The two products use the same PCB and Panel (reversed). Pads labels the four IO pairs 1,2,3,4; Fix labels the four IO pairs as CV, AT/BC, Vel, Gate which may be useful for some users. Schematic of one section; this is repeated, and you choose which components are relevant to you. This is a preset …
When Dieter Doepfer developed the Eurorack modular synthesizer specification, he came up with some signal-level specifications that were suitable for using with +/-12V power. Previous modular synths, such as FrakRack modules and the large 1/4" jack modules like MOTM, used +/-15V. You can see the Eurorack technical specifications here. Audio signals should be no more …
There are no known issues with the Rev 1 PCB. It is a blue ROHS-compliant board with "Rev 1" on the reverse. Note the following: The board has holes for both a large 7805 and a small 78L05. Do not install both: install one or the other.Capacitors C1, C3, C7 should be non-polarized or bipolar capacitors.The 9.1k and …
This is for the Rev 3 (Blue) PCB. If using a 4HP panel, we recommend the t18 micro-knobs (available, e.g. from Thonk.) PartQuantityValueSupplier1R35,R21 22.2M 2R34,R33,R30,R25 41M 3P1IDC-Header_2x08_P2.54mm_Vertical1EurorackPower16pin 4R31 1150k 5R32,R20,R24,R6,R9 5100k 6R29,R27,R8,R22,R10,R18 610k 7Q8,Q6,Q7,Q5,Q4,Q3,Q2,Q1TO928NPN 8D6 1LED 9R28,R26,R12,R15,R3 51k 10D5 11N4148 11U1 1TL071 12C1,C2,C3 310uF 13C7 12.2uF 14C8C_Disc_D5.0mm_W2.5mm_P2.50mm110n 15D1,D2,D3D_DO-35_SOD27_P7.62mm_Horizontal3BAT43 16R14Potentiometer_Alps_RK09Y11_Single_Horizontal150k 17R7,R17Potentiometer_Alps_RK09Y11_Single_Horizontal2100k 18J1,J2PJ302M2PJ302M Switch 19J3PJ302M1PJ302M_NoSwitch 20C6 11nF …
Continue reading "Clean Envelope: Bill of Materials Rev 3 PCB"
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