- Participants compared current microcontroller options amid the global chip shortage, settling on the STM32 Nucleo-G491RE board (STM32G491RET6 MCU) as the best balance of availability, price (~US$30 shipped), and specs: three 4 Msps 12-bit ADCs plus two 15 Msps and two 1 Msps 12-bit DACs, all supported in the Arduino IDE.  
- The discussion weighed open-source toolchains versus vendor stacks; libopencm3 and ChibiOS were recommended as fully open alternatives to ST’s proprietary STM32Cube HAL, while Arduino/CircuitPython were noted for rapid prototyping despite some non-free components.  
- An 80 Msps 12-bit ADC in the obsolete NXP LPC4370 was highlighted as an exceptional but now-unavailable part; speculation arose that it had originally been designed for a high-channel-count biomedical device.  
- ESP32 was suggested as a widely available fallback: it offers a 12-bit ADC and dual 8-bit DACs, with the possibility of adding resistor ladders to extend DAC resolution.  
- A 2006 PNAS paper on deploying a sunshade at the Earth–Sun L1 point to combat global warming was briefly shared as background reading.