Vollrath, Jörg
Prof. Dr.-Ing.
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Vollrath, JörgProf. Dr.-Ing. |
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Implementing an oscilloscope, waveform generator, digital IO and power supply
with an BASYS3 FPGA board, an Arduino MKR WIFI1010 or a RaspberryPi and
providing an interface using HTML, CSS and JavaScript. Software and Hardware development projects can be done. Starting point is the project EEBench. EEBench NEEBench.html |  |
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The ADALM2000 is a open source electronic laboratory system.
In this project an extension in hardware (FPGA programming) or software
(nodejs with web interface) should be realized. |  |
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There is no proper IO pad available for F=50 nm for Electric. Design a layout and simulate the Pad. |  |
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There is no transistor count and switch level simulator available in Electric A web page should count the transistors and provide a switch level simulation based on LTSPICE netlist. |  |
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The PLEN and Vivi robot can be controlled by raspberrypi zero with Johnny Five. 1. The PCB has to be improved to solve power and connection issues. 2. The web interface for movement has to be extended. 3. Sensors should be interfaced: Video, gyro, position, motion, collision |  |
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Improve the current VHDL code to control ADC and DACs for
a BASYS3, ZED Board or AES-MINIZED-7ZOO7-G board and different types of ADC and DAC |  |
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Nonlinear IV curves of diodes and MOSFETs allow current measurement of a big dynamic range.
Temperatur change can affect these measurements. A circuit should be built to measure
temperature and current and compare accuracy to resitor measurements. |  |
| Redpitaya is an open source multifunctional laboratory instrument which contains an FPGA and ARM processor, ADC, DAC and LEDs. This project realizes a filter applications as web design with phyton and node.js and changing the FPGA design. |  |
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Using LTSPICE an operational amplifier is built.
A test suite is developed to be able to measure data sheet parameters:
IDD, A0, slew rate, ft, CMM input range, CMRR, VDDRR and output range. Investigations of transistor sizing and data sheet parameters are done. |  |
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A low pass circuit should be built and simulated using LTSPICE using RC circuit, SC circuit
and a digital filter. Complex transfer function, H(z) and digital filter coefficients should be matched. |  |
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With an ESP8266 kit realize a web parameter analzer interface for the 2 channel DAC
and a 4 channel SPI ADC extension board. Voltage range 3V or 10 V. Starting point: NodeMCU und ESP8266 - Einstieg in die Programmierung |  |
Low cost serial DAC simulation, realization, error correction and characterizationA serial C DAC has a minimum number of components. This structure makes it easy to simulate, realize, characterize and to study error correction. This paper presents a discrete 12 bit serial C DAC with digital error correction. Theory, high level (JavaScript), low level (LTSPICE) simulations, a real circuit and low cost measurements and error correction using an Arduino board are presented. |  |
Open Access Microelectronics CourseA master level class Microelectronics is presented with the accompanying web page, tools usage of LTSPICE, Electric and ISE Webpack for design of a UART. It enables open access to an example of chip design. |  |
Implementation and Testing of a FPGA Based Sigma Delta Analog to Digital ConverterIn this work a 10-bit sigma-delta analog to digital converter was implemented using only a NEXYS 3 FPGA board in combination with some passive components. INL and DNL was measured for both devices. The overall setup revealed a SNR of 33.8 dB with an ENOB of 5.3 bits. |  |
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A web page to do FFT is available for ADCs and DACs. The FFT playground should make it possible
to investigate changing input signals (sine, square, sawtooth, triangle, AM, FM modulation) and FFT parameters (Number of point, sampling time) in a webpage.
It is a project using HTML and JavaScript. |  |
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With the StereoPi kit a 3D video for Cardboard or beamer and a depth map should be taken. Web page Crowd Supply Crowd funding platform, Web page StereoPi |  |
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The PLEN and Vivi robot have an arduino or ESP32 as control board.
Software development is very tedious. A raspberrypi zero is used
with Johnny Five to control a arduino compatible motor control. | |
Corredor A Jupyter Notebook on Red Pitaya: LED control and FPGA design2020Redpitaya is an open source multifunctional laboratory instrument which contains an FPGA and ARM processor, ADC, DAC and LEDs. This project realizes user applications either using the available "default" design configuration with phyton and node.js or changing the FPGA design. | 
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Hossain A Web-interface for a Sense HAT for Raspberry Pi2020The main goal of this scientific project is to run a Node.js server on Raspberry Pi and to control the LED matrix of the Sense HAT by a webpage. And at the same time, calibrate the color of LEDs of the Sense HAT. | 
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