Electronic Design Freelance Jobs

Complete design including simulation, farmware, protection, pcb design, list components or bom preparation, micro controller code development etc. For a grid connected inverter which will convert upto 600V DC battery bank to 415V, 3-Ph, 50Hz output suitable to connect to grid.

Category: Engineering & Manufacturing
Subcategory: Industrial design
What do you need?: New design from a sketch
Is this a project or a position?: Project
Required availability: As needed

Design an energy-efficient nanogrid using PSCAD simulation software. The nanogrid must be a cascaded design which consists of 5 Wind Source components (with varying wind speeds of 6 - 8 m/s), 5 Quasi-Impedance-Source Inverters (Q-ZSIs), and 5 PI Controllers to provide boost regulation at the nanogrid's 3-phase output (400 Vac). A step-up transformer can be added to achieve the desired voltage at the output / load.

Category: Engineering & Manufacturing
Subcategory: Industrial design
What do you need?: New design from a sketch
Is this a project or a position?: Project
Required availability: As needed

I need to build a 250 nm UV detector (spectrophotometer) in a flow of organic solvents.
The project requires to detect changes of UV absorbance or transmitance preferably in real time or if budget tight then to be able to generate data so I can make excel graphics. It has to detect changes when different substances pass through a specific point while carried by organic solvents (micrograms to milligrams in 300 to 10 microliters) I can provide more details and adapt the project into something doable, I can build the circuits myself and get the parts if schemes are provided , I have a very basic level in PIC microcontrollers  C and arduino. I’m PhD student in chemistry and I require this project for purification of samples, I’m working on a research team with a tight budget and we can’t buy new Prep HPLC nor repair ours  so I urgently require this project.

Necesito construir in detector UV a 250 nm (espectrofotometro) en in flujo de solventes organicos . El projecto requiere detectar cambios en absorbancia o transmitancia UV , preferentemente en tiempo real o si el presupuesto lo impide que sea capaz de generar datos para que los grafique en excel. Este debe detectar cambios cuando diferentes sustancias pasen por un punto dentro de un flujo de solventes organicos (microgramos a miligramos en 300 a 10 microlitros)  puedo dar man detalles o especificaciones o adaptar el projecto a algo mas viable.
Puedo construir circuitos electronicos si se me provee con los esquemas. Tengo in nivel muy basico en PIC microcontrollers y arduino. Soy estudiante de doctorado en quimica y requiero este proyecto para purificacion de muestras.
Trabajo con un grupo de investigacion que tiene un presupuesto limitado y no nos es posible comprar un HPLC preparativo ni reparar el nuestro por eso requiero de este proyecto.

Category: Engineering & Manufacturing
Subcategory: Other
Project size: Medium
Is this a project or a position?: Project
Required availability: As needed

https://play.google.com/store/apps/details?id=com.visual.roulettegega

Please downlaod the above app and have a good look at it :
we need to:
1-re-dsign the app and add more screns
2-integrate a mobile payment
3-do a marketing plan
4-test it
5-any improvemnet suggestions.

Category: Design & Multimedia
Subcategory: Mobile app design
Is this a project or a position?: Project
Required availability: As needed

Partimos de la base, con el siguiente programa en python: https://code.google.com/p/termineter/

Actualmente estoy probando mil fórmulas para sincronizar una sonda estándar con el programa. Pero no logro avanzar.

El objetivo es programar y modificar valores en el contador digital.

Necesito la ayuda de un experto para avanzar. Empezamos a trabajar el lunes 13/07/2014 por remoto.

Preparo una máquina con win7/xp 32 bits, entorno python etcétera.

Al finalizar y dejar todo en marcha, elaboraremos un manual práctico.

Eso es todo. Trabajo por resultados, después de elaborar todo el colaborador y yo llegamos a un acuerdo sobre el tiempo trabajado y se retribuye al freelancer.

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In English:

We assume, with the following program in python: https://code.google.com/p/termineter/

I am currently testing a thousand ways to synchronize a standard probe with the program. But I can not move.

The objective is to schedule and modify values ​​in the digital counter.

I need expert help to advance. We started to work on Monday 7/13/2014 remote.

Win7/XP prepare a machine with 32-bit python environment and so on.

At the end and leave everything in place, we will develop a practical manual.

That's it. Work results, after making all partner and I came to an agreement on working time and is paid to freelancer.

Category: Engineering & Manufacturing