Precision Multi-Channel Square Wave Generator
$250-750 USD
Paid on delivery
This project focuses on the development of an advanced device designed to generate precise square wave signals across two to six independent channels. The device is engineered to control voltage within the range 1-30 volts, microcurrents within the range of 1 to 600 microamperes, offering frequency adjustment capabilities between 1 and 999 Hz, and allowing for duty cycles ranging from 1% to 100%. One of the key features of the device is its ability to reverse polarity if is needed on each channel. The device will include a feature to limit the duration of each working session in minutes , ensuring safe and controlled use. Additionally, polarity reversal will be an optional setting for each channel, allowing operator to enable or disable this function as needed. When enabled, the polarity reversal will be time-limited within each session, providing precise control over the duration and timing of the reversal to align with specific scientific protocols.
At the heart of this device is a Raspberry Pi which is employed to generate Pulse Width Modulation (PWM) signals that serve as the basis for the square waves.
### Operator Interface and Control
The device is equipped with a touch screen and a modern, user-friendly graphical interface (GUI). Programming language - Micropython, Python. This interface provides the operator with real-time control over each of the two to six channels, allowing for the adjustment of voltage, current, frequency, duty cycle, and polarity settings. The GUI also facilitates easy monitoring and adjustment during operation, ensuring that the parameters are maintained accurately according to the needs of the scietific protocol.
### Deliverables
As an integral part of the development team, the electronics professional assigned to this project will be responsible for the following deliverables:
1. **Complete Circuit Diagram:** A comprehensive schematic of the entire system, detailing all connections between the Raspberry Pi, DACs, operational amplifiers, H-Bridge drivers, and the various components involved in power management and signal routing.
2. **Bill of Materials (BOM):** A detailed list of all components used in the project, including part numbers, manufacturers, and any relevant specifications to ensure precise sourcing and assembly.
3. **PCB Design Files:** The design and layout of the printed circuit board (PCB) using industry-standard software. These files will include Gerber files, drill files, and any other necessary documentation to manufacture the PCB.
4. ** Enclosure Model Suggestion.**
The circuit and its enclosure will be designed to be compact and well-sealed to protect against dust, moisture, and other environmental factors, ensuring durability and reliability. Given the importance of maintaining optimal operating temperatures, the enclosure will feature efficient ventilation systems, such as strategically placed vents or active cooling solutions like small, quiet fans. These will be carefully integrated to prevent overheating without compromising the device's compact size and sealed nature. Use of heat sinks and thermal management materials may also be considered to further enhance cooling efficiency within the small form factor.
Project ID: #38446915
About the project
Awarded to:
33 freelancers are bidding on average $584 for this job
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I am an experienced electronics professional with expertise in developing precise square wave generators. I have a strong background in using Raspberry Pi and micropython, Python for PWM signal generation. I can provid More
Being an experienced software developer, I'm equipped with a deep understanding of working with Raspberry Pi and how to generate PWM signals. This makes me the ideal choice for the development of your precise multi-cha More
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