MANNtech is a collection of hardware designed with software for practical applications. Original Home Page
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The following is the development of a hardware and software solution to advanced control, optimised data acquisition, edge process and communications. It is a development board to interface analog / digital inputs and outputs with dual core 32 bit processing coupled with WIFI & Bluetooth communications. It is intended to combine the fundamental understanding of instrumentation and electrical system behaviors and limitations with efficient algorithm architecture to enable real-time signal processing & device anomaly detection while providing advanced control. Additionally, optimised data collection for efficient communication to remote storage and external automated supervisory control.
Early Design
Early Design
Defined by low cost readily available components; chosen to compliment the main microcontroller. Leveraging reference designs, datasheets and applications notes. Substituting with available components and optimising for low noise, stability and for a wide application implementation.
System Specifications
System Specifications
Dual core 32bit CPU with hardware floating point unit, WIFI and Bluetooth.
DC input voltage 80V down to 3.3V (over voltage protection, with switchmode and linear voltage regulation).
5 Analog inputs with user selectable voltage dividers and RC filters, 2 DACs & 13 general purpose I/O.
Hall effect current sensing (up to 30A).
Optional external 16Bit I2C - ADC.
Schematic Capture
Schematic Capture
Each part is split into logical, modular subsystems defined by their function and supporting components. Once tested, it will contribute to a library layout of low cost, efficient and highly optimised subsystems with known characteristics - knowledge that is important for software optimisation.
PCB Layout
PCB Layout
Major parts placement is defined by the attributes of the main components. The WIFI microcontroller placed in an optimal position to prioritise signal strength. The switch mode power supply is placed on the opposite side of the board, followed by the linear voltage regulator to minimise voltage ripple and in doing so minimising analog signal noise.
3D Modeling & Designing for Manufacture
3D Modeling & Designing for Manufacture
Component selection and board layout has been considered from the start to enable the PCB to be autonomously manufactured. Only the user selectable components and optional components have been chosen as through hole devices to aid the user.
3D modeling is used to assess clearances of placed components and aid in the development a molded enclosure.
Board Sent to Manufacture
Board Sent to Manufacture
Submitted Board Gerber's (rendered - 3D)
Submitted Board Gerber's (rendered - 3D)
Manufacture Pick & Place Parts
Manufacture Pick & Place Parts
Basic components to be added to the board (2D render), and visually populated.
The majority of the through hole components are to be added when the boards are received. This is incase there are errors on the board and limits component waste (first iteration). Note, all components are in stock that were added for SMD assembly, and all components to be added when the boards arrive are already in hand.
The board has a 3 day turn around - post manufacturability / engineering review. The SMD parts assembly will add an additional 3 days, followed by 4 - 8 days shipping.
Error found with the pick & place of the USB socket
Error found with the pick & place of the USB socket
Error corrected (see top center)
Error corrected (see top center)
Enclosure Modeling
Enclosure Modeling
The enclosure is being modeled to protect and fit the PCB onto a number of different mounts: Din, horizontal and vertical. The board is modeled first, the wire entries and the mounting of the board to the enclosure.
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