synth_mages/MK_SEQ
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more fixes

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George Dorn 2024-07-29 17:35:15 -07:00
parent a5c5ff12ce
commit dcaec24083
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Schematics/schematic_bugs_v1.md
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Two show-stopping bugs: Show-stopping bugs needing bodges:
- Errant connection between R25 and R1. This needs to be severed. [See this image of the bad trace](bad_trace_v1.jpeg). - Errant connection between R25 and R1. This needs to be severed. [See this image of the bad trace](bad_trace_v1.jpeg).
- Wrong side of the glide capacitor (C13) is connected to the integrator Op-Amp (U3-10). Cut the current trace and bodge from the other leg of the capacitor. - Wrong side of the glide capacitor (C13) is connected to the integrator Op-Amp (U3-10). Cut the current trace and bodge from the other leg of the capacitor.
- Gate stops working after a few due to the lack of a pulldown resistor after D35. Connect a 100k resistor between the 'K' side of that diode (also U2-12) to ground to fix
this and turn it into a solid square wave. Easiest bodge on the back is probably around the far leg of R21 to the K side of D35, but other options exist.
- Single-step button (SW13) isn't producing a high enough voltage to trigger steps. Replace C10 with 100K resistor, and bridge out R44 with a wire.
Assembly Notes: Assembly Notes: