An ultra compact, low cost, low-part-count board that, together with the Lolin S3 Mini w/ WiFi, exposes the full capabilities of the ADS1299 up to at 16000 sps. Microcontroller and up to 8 boards stacked design intended to plug into custom sensor/filter board with power option to support active electrodes. Intended to support both HD EEG and HD EMG and ECG or combinations with each board capable of it’s own sample rate. Mixed electrode configurations supported using adaptor board supplying board ID to firmware.