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Machine Overview
The uEAC R001 machine is a research device that allow investigators to explore and develop
applications in the area of analog computation.
The uEAC has a USB interface that allows a host machine to modify the state of the machine
where the machine has a 5x5 array of current sources/sinks. The communication interface can
also be used to report the voltage gradient on the sheet.
Primitive Command Language
- Probe Layout
To interpret the response of the command interface, it is important to understand the layout
of the probe channels. The board is labeled with a silkscreen to indicate that the top left
corner of the array is 1A. The probe channels are numbered as follows given the upper left
corner is channel 0.
0 | 1 | 2 | 3 | 4
| 5 | 6 | 7 | 8 | 9
| 10 | 11 | 12 | 13 | 14
| 15 | 16 | 17 | 18 | 19
| 20 | 21 | 22 | 23 | 24
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- Reporting
- RVZ - Report Sheet Voltage (12-bit A/D result - Vref=3.3V)
- RPZ - Report Current Source Commands (see Section on Current Source Control for Conversion)
- RMZ - Report Current Sink Commands (see Section on Current Source Control for Conversion)
- RAZ - Display All - Information from RVZ,RPZ,RMZ
- Current Control
- MccddddZ - Modify Current Sink
- cc - ASCII encoded Decimal Channel
- dddd - ASCII encoded Decimal Source Current where sink_current = (dddd*805e-6)/2500
- PccddddZ - Modify Current Source
- cc - ASCII encoded Decimal Channel
- dddd - ASCII encoded Decimal Source Current where source_current = ((4095-dddd)*805e-6)/2500
uEAC Improvement Projects
Reference Data
Links
Design Engineer
- Bryce Himebaugh
- CSG Staff
- bhimebau@cs.indiana.edu
- LH430B
- 855-6984
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