BioAmp EXG Pill Design
Worked for 9 mins 48 sec
Created a project doc
BioAmp Upgrade Design Notes
Upgrade the original single-output BioAmp EXG-Pill into a 2- or 3-output design for simultaneous EOG and EMG acquisition while preserving th...
Schematic topology is in place with three BioAmp channels and matching input/output headers. I’m doing a quick verification now; layout still needs a channel-by-channel PCB placement pass before routing.
Worked for 3 mins 25 sec
Implemented the first-pass 3-output BioAmp Upgrade schematic in Flux: three preserved BioAmp EXG-Pill blocks (
AFE1–AFE3) with matching input/output headers, shared VCC/GND, and separate analog outputs OUT1/OUT2/OUT3. Verification shows no open ERC/component review issues for the current schematic-level implementation, and I recorded the design rationale in BioAmp Upgrade Design Notes.Open items:
- I could not continue into PCB placement/layout because the account currently has no available ACUs.
- The current implementation uses the imported BioAmp block as a preserved channel module; it is not yet expanded into three full TL074/passive-level channels inside Flux.
Suggested next steps:
- Add ACUs, then I can size the PCB, place the three channel blocks/headers, and prepare routing constraints.
- Decide whether you want a module-style 3-channel board using preserved BioAmp blocks, or a fully expanded monolithic TL074/passive PCB.
- After placement, route with analog-input isolation: inputs on one edge, outputs/power on the opposite edge, short symmetric IN+/IN− traces, and solid ground reference.
Fully expanded PCB
Module-style board
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