daviderovell0 / bzzzbz

Digital video synthesizer for live music performance! powered by Raspberry pi + OpenGL
https://twitter.com/bzzzbz_video
GNU General Public License v3.0
47 stars 4 forks source link

CV and CLK in #53

Open deetrone opened 4 years ago

deetrone commented 4 years ago

Implement 4 (?) CV in and 1 clock in. With 4 knobs a single MCP3008 ADC might be enough but in the end might need two of them.

Both hardware and software implementation required.

daviderovell0 commented 4 years ago

CV and some gates can exceed 10V up to 12V (?), so the MCP3008 is not enough as it has a max input of 7.6V. We have to use another ADC or decrease the voltage though some additional circuits

marcellillyes commented 4 years ago

Yess I think we should first try out adding a simple op amp circuit to map the eurorack range to MCP range.

daviderovell0 notifications@github.com ezt írta (időpont: 2020. szept. 2., Sze, 16:24):

CV and some gates can exceed 10V up to 12V (?), so the MCP3008 is not enough as it has a max input of 7.6V. We have to use another ADC or decrease the voltage though some additional circuits

— You are receiving this because you were assigned. Reply to this email directly, view it on GitHub https://github.com/daviderovell0/bzzzbz/issues/53#issuecomment-685771071, or unsubscribe https://github.com/notifications/unsubscribe-auth/ALHQBKB3AIECEEKKTSE5463SDZIQ7ANCNFSM4MV4IDXA .

marcellillyes commented 4 years ago

Ill try model it in LTSpice

Marcell Illyés 300000persec@gmail.com ezt írta (időpont: 2020. szept. 2., Sze, 16:33):

Yess I think we should first try out adding a simple op amp circuit to map the eurorack range to MCP range.

daviderovell0 notifications@github.com ezt írta (időpont: 2020. szept. 2., Sze, 16:24):

CV and some gates can exceed 10V up to 12V (?), so the MCP3008 is not enough as it has a max input of 7.6V. We have to use another ADC or decrease the voltage though some additional circuits

— You are receiving this because you were assigned. Reply to this email directly, view it on GitHub https://github.com/daviderovell0/bzzzbz/issues/53#issuecomment-685771071, or unsubscribe https://github.com/notifications/unsubscribe-auth/ALHQBKB3AIECEEKKTSE5463SDZIQ7ANCNFSM4MV4IDXA .

daviderovell0 commented 4 years ago

Sounds good. We can check also ADCs that take higher voltages so we can avoid making extra circuit