Flip flops
About the Flip flops PCB
Flip flops is an open source PCB design by ajjackson, published on GitHub. It is a 2-layer board measuring 29.8 × 106.7 mm, with 49 components from 12 distinct parts.
Other key parts include the 4050 and 4013. By type, the board carries 20 resistors, 11 connectors, 10 diodes, 4 capacitors, 2 ICs and 2 transistors.
It belongs with the audio designs in this gallery.
From the project
Synth DIY stuff
Somewhere to capture and develop some ideas for novel synthesiser modules. Currently that means Eurorack, so +/- 12V power, TS mini jacks, 10V peak-to-peak audio signals.
Not clear at this stage if the end goal is perfboard or PCBs, will see how ambitious the designs get...
Main components on the Flip flops
Flip flops bill of materials (BOM)
49 components, 12 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 4050 | SOIC-16_3.9x9.9mm_P1.27mm | U1 |
| 1 | 4013 | SOIC-16_3.9x9.9mm_P1.27mm | U2 |
| 2 | MBT3904DW1T1G MBT3904DW1 ON Semiconductor | SOT-363_SC-70-6 | Q1, Q2 |
| 10 | WQP-WQP518MA 3.5mm_Mono_Switched Wenzhou QingPu Electronics Co | EighthInch_PJ398SM | J1, J2, J3, J4, J5, J6, J7, J8 +2 |
| 1 | LL1007-1 (2*8 HITEMP) Eurorack_Power_16pin_Shrouded Cixi LanLing | Pins_2x08_2.54mm_TH_EuroPower_Shrouded | J11 |
| 6 | D_Schottky | D_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D1, D2, D3, D4, D5, D6 |
| 4 | LED | LED_D3.0mm_FlatTop | D7, D8, D9, D10 |
| 2 | EEE-FN1A100R 10uF_4x5.3_10V Panasonic | CP_Elec_4x5.3 | C1, C3 |
| 2 | 100n | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C2, C4 |
| 6 | 100k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1, R2, R3, R4, R5, R6 |
| 12 | 2.2k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R7, R8, R9, R10, R11, R12, R13, R14 +4 |
| 2 | 10R | R_Axial_DIN0309_L9.0mm_D3.2mm_P5.08mm_Vertical | R19, R20 |
Flip flops design files
The KiCad project lives in the ajjackson/eurorack repository on GitHub; these links point at the commit this page was built from.
Flip flops: common questions
How big is the Flip flops PCB?
The Flip flops measures 29.8 × 106.7 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Flip flops?
49 components, from 12 distinct parts. The full bill of materials is listed on this page.
Where can I download the Flip flops design files?
From the ajjackson/eurorack repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Flip flops design in my own project?
The repository has no license, so all rights stay with ajjackson. Use it as a reference, and ask the author before reusing the design.
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