jmc64
New Member
Brand new future user ( patiently waiting for my AE to arrive)
Posts: 5
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Post by jmc64 on Jan 2, 2021 12:02:20 GMT
Hi all,
While waiting for my AE to arrive, I am trying to get my hands on DIY for AE. ElectricDuid StompLFO seems to be very easy to use in a module for AE as it only requires 5V and the schematics are porvided. However, I have few questions .. hoping that someone could help.
The schematics of the stompLFO provide a 9V converter/conditionner to 5V to power the chip. My idea is to simply ignore this part as I suppose the 5V of AE sufficient. Maybe I should add a capacitor to the ground to protect the chip power input to avoid jumps. Do you thing this is OK ?
Also, I would like to add CV pots connected to the 5V power input of AE (power ribbon) for "hand CV of the LFO) and to the one of the entry pin ( for connecting for instance another LFO), the pot acting in that case as an attenuator ... there I don't know how to couple the two ? Could someone be so kind to show me direction?
Also, I hope it is possible to post schematics on this forum hoping that they can be shared. Best wished for new year.
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Post by robertlanger on Jan 2, 2021 13:44:26 GMT
You can avoid/skip the regulator of course; just connect the Chip directly to the 5V supply (bus cable) of the AE modular.
You can wire the pots as voltage dividers: left pin to ground, right pin to +5V, and the center pin to the CV input of the Chip.
Let's hear how it works; I think the Electric Druid chips are a very good choice for AE DIYing!
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jmc64
New Member
Brand new future user ( patiently waiting for my AE to arrive)
Posts: 5
|
Post by jmc64 on Jan 2, 2021 20:18:40 GMT
Thank you Robert for your quick reply.
I found the way to achieve this : I will bring the 5 V to the 4 lowest pin of the input connector. Then, eitheir short patch cables from pin 8 to 1 ( for instance) will bring 5V into the voltage divider circuit or it will be possible also to plug any other control voltage.(i.e. another LFO). I upload my very first schematics, ever, as a pdf document. I hope people can critisize it. As it is made with Kicad .. there is a little trouble with pin numbering, but in the end .. it seems to be OK on the PBC layout.
All caps are not polarised. The design is made for SMD 603. The routing has been made thanks to freerouter.
Any comment is welcome.
Should I get positive feed-back I will send the order for the pcb ( I don't know how to etch these) and the missing parts.
BTW, may I suggest that for DIY the specs for the PCB could be a bit more detailed ( i.e. : size of pots, place of collectors, size of mounting holes ...).
Thank you a lot for your help.
Here are the schematics : LFO.pdf (35.27 KB)_ and what could be the board ( please don't pay attention to the pins)
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Post by rodney on Jan 6, 2021 0:23:44 GMT
a tap-temp LFO would be super cool!
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