TT054 Loncar Octal Current Source
8 channels of single-direction current sources into ground (not sinks). Uses TTCS8P_1550F as the base board:
I went with the M4 (TTSAME51) processor in case we needed future bandwidth to close loops.
Schematic of base board:
The DAC is the TTDAC8554. Schematics:
Arduino code:
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