ditronix / pvim-precision-voltage-iot-monitor

DitroniX PVIM ESP32 AD7606 Precision Voltage IoT Monitor SDK Board

PVIM ESP32 AD7606 Precision Voltage IoT Monitor SDK Board

This PVIM Board is a Precision, Eight Channel, Synchronous Data Acquisition board with Simultaneously Sampled Isolated Inputs.

A beta version of this board will be fully tested and then made available during May 2023.

PVIM Beta PCB 3D Image - Components

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The PVIM ESP32 AD7606 Precision Voltage IoT Monitor board main requirements:

• Accurately Measure Voltages, from a Positive and Negative Range
• Low Noise
• Good Dynamic Voltage Range
• Self-Contained Board for IoT Projects
• Minimum of Eight Totally Separate Inputs – Each Configurable
• Wide DC Input Power Voltages. Board must be able to be Powered from around 12V to 48V Directly
• Ability to Monitor Lead-Acid, Lithium Batteries. 48V Strings, or Individuals
• Ability to Facilitate Current Monitoring via CT Clamps or DC Shunts
• High Impedance Inputs
• Ability to Provide Sensitive Voltage Measurements
• Ability to Provide Temperature measurements
• Ability to Store Parameters and Log Measurements to EEPROM
• Minimal Calibration Requirements
• Compact but Flexible
• Lower Current Usage
• Controlled using an ESP32 MCU
• Easy USB Connectivity Flashing, Logging etc

PVIM Beta PCB 3D Image - Board

PVIM Beta PCB 3D Image - Bottom Jumpers

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The PVIM ESP32 AD7606 Precision Voltage IoT Monitor board specification overview:

• ESP32 MCU with integrated Wi-Fi and Bluetooth connectivity
• AD7606BSTZ 8 Channel DAS DSP
• Digital Volt Meter (DVM)
• 8 x Simultaneously Sampled Isolated Inputs
• Synchronous Data Acquisition
• 16-bit ADC with 200 kSPS on All channels
• Oversampling Capability With Digital Filter
• True Bipolar Analog Inputs +/- 5 V | +/- 10 V
• Flexible Resistor Capacitor Networks on All Inputs
• Individual Inputs Can Be Balanced (Differential) or Unbalanced (Grounded)
• Second-order Antialiasing Analog Filter
• 7 kV ESD Rating On All Analog Input Channels
• 95.5 dB SNR, -107 dB THD
• 0.5 LSB INL, 0.5 LSB DNL
• Voltage Reference Internal (AD7606) or External (2.5V Reference On-board)
• Board Wide DC Power Input Range 8 to 60V
• USB Wemos D1 Compatible

Further Information

Additional information, and other technical details on this project, maybe found in the related repository pages.

Repository Folders

• Code (Code examples for Arduino IDE and PlatformIO)
• Datasheets and Information (Component Datasheets, Schematics, Board Layouts, Photos, Technical Documentation)
• Certification (Related Repository Project or Part, Certification Information)

Repository Tabs

• Wiki (Related Repository Wiki pages and Technical User Information)
• Discussions (Related Repository User Discussion Forum)
• Issues (Related Repository Technical Issues and Fixes)

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• Visit the related Project plus the related Discussions and Wiki Pages. See tab in each separate repository.
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Dave Williams, Eastbourne, UK.

Electronics Engineer | Software Developer | R&D Support | RF Engineering | Product Certification and Testing | STEM Ambassador

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