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docs(readme): correct BOM sensor counts and locations

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The STM32 peripheral list in the README disagreed with the production
BOM (4_7_Production Files/Gerber_Main_Board/RADAR_Main_Board_BOM_csv)
and with the firmware (9_1_Microcontroller/.../main.cpp). Corrections
based on origin/main commit 754d919:

- ADS7830 Idq ADCs: placed on the Main Board (U88 @ 0x48, U89 @ 0x4A),
  not on the Power Amplifier Boards. Added the INA241A3 (x50) and 5 mOhm
  shunt detail that completes the current-sense chain.
- DAC5578 Vg DACs: placed on the Main Board (U7 @ 0x48, U69 @ 0x49),
  not on the Power Amplifier Boards. Noted closed-loop Idq calibration
  at boot (main.cpp powerUpSequence).
- Temperature sensors: 1x ADS7830 (U10) with 8 single-ended channels
  reading 8 thermistors -- not 8 separate ADS7830 chips. Cooling is a
  single GPIO (EN_DIS_COOLING), bang-bang, not PWM.
- GPS: reflect the UM982 driver merged in #79 and its role in
  per-detection position tagging beyond map centering.

Counts now match the 3x ADS7830 / 2x DAC5578 / 16x INA241A3 population
in the production BOM.
This commit is contained in:
Jason
2026-04-17 20:04:01 +05:45
parent 754d919e44
commit 5d5e9ff297
1 changed files with 4 additions and 4 deletions
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README.md
+4 -4
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@@ -67,13 +67,13 @@ The AERIS-10 main sub-systems are:
- Clock Generator (AD9523-1)
- 2x Frequency Synthesizers (ADF4382)
- 4x 4-Channel Phase Shifters (ADAR1000) for RADAR pulse sequencing
- 2x ADS7830 ADCs (on Power Amplifier Boards) for Idq measurement
- 2x DAC5578 (on Power Amplifier Boards) for Vg control
- GPS module for GUI map centering
- 2x ADS7830 8-channel I²C ADCs (Main Board, U88 @ 0x48 / U89 @ 0x4A) for 16x Idq measurement, one per PA channel, each sensed through a 5 mΩ shunt on the PA board and an INA241A3 current-sense amplifier (x50) on the Main Board
- 2x DAC5578 8-channel I²C DACs (Main Board, U7 @ 0x48 / U69 @ 0x49) for 16x Vg control, one per PA channel; closed-loop calibrated at boot to the target Idq
- GPS module (UM982) for GUI map centering and per-detection position tagging
- GY-85 IMU for pitch/roll correction of target coordinates
- BMP180 Barometer
- Stepper Motor
- 8x ADS7830 Temperature Sensors for cooling fan control
- 1x ADS7830 8-channel I²C ADC (Main Board, U10) reading 8 thermistors for thermal monitoring; a single GPIO (EN_DIS_COOLING) switches the cooling fans on when any channel exceeds the threshold
- RF switches
- **16x Power Amplifier Boards** - Used only for AERIS-10E version, featuring 10Watt QPA2962 GaN amplifier for extended range