电子 Jobs

An arduino module interfaced with gas sensors with gsm module that sends sensor data to a cloud repository and receives instructions based on the readings, preferably using JavaScript and server-client capabilities.

I am looking for a small custom embedded solution to drive WS2812B LED's. The project file is attached as PDF. Preferably using STM32F0 style microcontroller. Best regards, Victor

1. a. Design and implement the following circuit with four inputs and four outputs using CMOS transistors. • The first output is high when the binary value of the input is less than or equal to7 • The second output is high when the binary value of the input is between 5 and 12 • The third output is high when the binary value of the input is greater than or equal to 8 • The fou...

There is Dell C6100 chassis and I want to speed up the fans. Need to change fan speed using bmc/bios/ipmi. Don't want to use lm-sensors/fancontrol for some reason. Need to use both manual and sensor based scenarios.

Arduino Uno/Mega or ESP32 w/Ethernet sketch for monitoring up to 16 devices with relays on LAN using3 methods: 1- IP ping; 2- AJAX response URL; 3- MQTT subscribe to topiks. The status of each monitored device must be displayed by switching respective LED- Red- OFF/NO RESPONSE, GREEN LED- STATUS OK, The 8 bi-color leds are connected to 2 Shift Register 74HC-595, and the pins 14, 12, 11 are connec...

Hi, Need a Arduino, Electronics, Microcontroller, PCB Layout expert for my current project. If you have knowledge please bid. Details will be shared in message with the selected freelancers. Thanks.

I have small work. If you experience in subject. Maximum 2 hours work. Analog modulation and frequency modulation waveform. Convert binary data in to Analog waveform.

i have small work... if your experienced in subject.. maximum 2 hours work...some of the questions are mentiond below... question are very small.... Analog Modulation and Frequency Modulation waveforms converting binary data into analog waveforms. Compute the transmitted signal using Direct Sequence Spread Spectrum deadline need with in 6 hours

measuring and control from PMbus or Rs485 , measuring two voltages using 12 to 16 bit ADC( 2000 samples second), and display one 7 segment LED or a graphical display . generating 2 to 3 DAC outputs. interface with external world using RS485/RS232, USB and Ethernet. web based panel to modify and measure required parameters.

I would like an adapter to plug into a male end of lightning cable to charge a Juul vaping device. Maybe 1-2 inches in length. A dongle of sorts. I would like it to be designed and manufactured. I can work on number of units

I need help in drafting and developing involving pcb and choose componetse to generate RF transmission at 433.92Mhz. The processor will be a pic 10F222, currently I have something ready, however the scope is small, I do not know if it is lack of pontencia or problem with components. A SAW 433.92Mhz crystal is used to brake the frequency, but it has oscillated a lot.

I have a project related to simulink field : electrical engineering and using optimization method Cuckoo search (CS) is an optimization algorithm

Hi, please check [登录来查看链接] and [登录来查看链接] This flexible pcb design has been used to provide dual sim capability to phones. I assume that it is basically filtering sim card and phone communication and when it is catching #11 or #22 input, it does the switch from sim 1 to sim 2. I need to filter something else between phone and sim card, I will explain it over chat, if you think that you can do sim...

From the provided datasheet write a 1/8 generic driver for a ROHM BU97950AFUV to setup for either 3.3v or 5v supply.A class library where a graphic is in memory array and can be displayed in a similar manor used to drive common Nokia 84x84 displays

Design a multifunction wristwatch that has time-keeping, alarm, and stopwatch functions. The wristwatch has three buttons (B1, B2, and B3) that are used to change the mode, set the time, set the alarm, start and stop the stopwatch, and so on. Pushing button B1 changes the mode from Time to Alarm to Stopwatch and back to Time. The functions of other buttons vary depending on the mode.

I need to create an app with sdl2 to use it on Raspbian running outside startix and be free in the future to use it on other linux operating systems. The app is a Queue Management System that works in this way: 1) at the start it show the number 00 2) right arrowkey: grow the number of one step, so for exampe ->1 -> 2 -> etc.. till 99 3) left arrow key: reset the number restarting it...

GETTING TEMPERATURES FROM MULTI POINTS ON MY MOBILE

I want someone to teach me the following AVR,ARM,PIC microcontroller industrial level programming in c/c++ by usin uvision IDE or atmel studio Course including [登录来查看链接] of uC [登录来查看链接] configuration and flag set or reset [登录来查看链接] types and arithmatic operation [登录来查看链接] [登录来查看链接] interfacing digital and analog [登录来查看链接],spi,i2c ,can,usart, wireless device configuration communication protocol...

Looking for an electrical engineer who is good at the following: matlab pcb design using Altium and eagle electronics project design overall programming power systems studies (ETAP if available) AutoCAD Rest will be discussed later.

Require an app to control the speed of a hydraulic motor via a PWM valve. The app will control a machine and the faster the machine is driven forward the faster the hydraulic motor needs to turn. We will use GPS speed and an actual speed pulse from the machine to determine the output signal to the PWM valve We need 12V controller with Bluetooth connection to control the PWM valve and return the ...

- Project Tile : Optimisation of Residential PV + BES System........... - 4 pages only. - 4 days.

I have a couple of switches connected in series with a load. The load remains energized until one of the switches breaks the circuit. The circuit is supplied with 110 Vac or 220 Vac. I want to add one extra conductor in the circuit, and manipulate the AC electrical signal to generate some sort of identifiable address on this conductor. This address needs to be identified by a separate circuit boa...

We are looking for electronic engineers to work with our Chief Technology Officer to perform various tasks for a game changing consumer product

Hey, I'm looking currently looking for some one who knows circuit boards how they work and how to assemble them to make what I have added as a picture below. I am looking for them to work on radio frequency (ie like a wireless door bell or car key remote). the second picture below is what i already have including the button sensors for the main board. I will also need the code to allow the co...

We work for a mining organisation and require solutions to control PLCs wirelessly using network switches and also program the same in SCADA . The machinery which needs to be operated have simple ON/OFF requirements with error messages if they occur, we are looking a HT breakers, pumps, lights and other simple equipment. The challenge here is the location which is a remote mining area, so no opt...

(Please READ until the END before bidding) what to do: -A simulink setup with MRAS speed estimator -A PI controller is used as MRAS feedback block in a first setup --A FOPI controller is used as MRAS feedback block in a second setup *Induction motor parameter (Power 110kW, top rpm 998, 4 speed in 25% increment will be used to test the setup) *Motor Load parameters (0%, 25%, 50%, 100%) *plot refe...

Design a multifunction wristwatch that has time-keeping, alarm, and stopwatch functions. The wristwatch has three buttons (B1, B2, and B3) that are used to change the mode, set the time, set the alarm, start and stop the stopwatch, and so on. Pushing button B1 changes the mode from Time to Alarm to Stopwatch and back to Time. The functions of other buttons vary depending on the mode.

The project should be done using matlab/simulink to store regenerative braking energy into an energy storage system which consist of battery and ultra-capacitor.

ITALIAN-SPEAKING FREELANCERS PREFERABLY, ENGLISH-SPEAKING ARE FINE, TOO SMALL PROJECT (WITH ARDUINO?) I WANT TO BE ABLE TO COMMAND THE LEDS (MAX 18) WITH A PIR AND A SLOW IGNITION (PWM?). THAT'S ALL. COMPLICATION IS IN THE ABSOLUTE NECESSITY TO MINIMIZE CONSUMPTION. THESE CIRCUITS ARE INSERTED IN ARTISTIC OBJECTS (PAINTINGS) THAT ONLY COME ON IN THE PRESENCE OF AN OBSERVATOR. IT IS ANNOY...

The charger is designed in such a way that it give %V and 1A, 2A, 3A as the output from the same port when we want the desired output. Their is OLED and 3 button, when we click to 1A it give 1A as output, 2A then it give 2A as output and same with 3A.

I want a device that has two AV inputs to connect the cameras and composite the signal of them in only one output and display both of the cameras in the same screen. I mean I want the screen to be split, the right part showing camera No.1 and the left part showing camera No.2 The device can start with a push of button or a switch,the nominal voltage is 12 volts DC , no video recording only displa...

Design an electronic dice game (Craps in the United States). The game involves two dice, each of which can have a value between 1 and [登录来查看链接] counters are used to simulate the roll of the dice. Each counter counts in the sequence 1, 2, 3, 4, 5, 6, 1, 2,… Thus, after the “roll” of the dice, the sum of the values in the two counters will be in the range 2 through [登录来查看链接] rules...

Basically I have a large data from 240 Battery which is retrieving voltages at different timestamp. I would like someone to sort of the data to make them all at the same time stamp. Maybe every 1 min for all of them. The data has to accurate.

Desenhar Painel de Circuito Impresso a partir de esquemas em PCAD ou Altium

Divide PS4 controller into two equal parts from the center (left and right) then replace the right analog stick with optical mouse sensor which will work as an analog stick.

Hello I need a engineer to develop a smart locker like Teodoor with wifi connection and bluetooth That it is possible to open the lock via http rest, and work with any lockers in world. [登录来查看链接] I need Urgent

We are looking for a professional engineer to develop a "dongle" to supply a load with 12VDC using USB PD. As this project is extremely time-critical, we are looking for an experienced developer that can ensure successful and fast completion of this project. The basic requirements for the product are: 1. Power the device (‘Load’) at 12VDC from a USB Type C source wi...

Hi I need to develop a custom network inventory software. there is some requirements may telecommunication expert could lead to design an implementable equipment

I need to create an app with sdl2 to use it on Raspbian running outside startix and be free in the future to use it on other linux operating systems. The app is a Queue Management System that works in this way: 1) at the start it show the number 00 2) right arrowkey: grow the number of one step, so for exampe ->1 -> 2 -> etc.. till 99 3) left arrow key: reset the number restarting it...

need power supply circuit design for given specification i/p: 230v AC, 0.5A o/p: 9v DC, 2A also provide technical documentation containing schematic diagram, layout design, BOM etc....

llooking foe expert in power [登录来查看链接] details in chat

Design PCB layers for wifi based project

Hola, Necesitamos agentes que nos ayuden a vender PCB. Este es Ace Chow de Global Success Circuit Co., Ltd de China. Es un fabricante profesional de PCB con 3 fábricas, produce PCB multicapa (2-20 capas), PCB de alta precisión, PCB basado en AL, etc. Si usted tiene tales intereses, por favor póngase en contacto conmigo. [Removed by Freelancer.com Admin]

I want a device that has two AV inputs to connect the cameras and composite the signal of them in only one output and display both of the cameras in the same screen. I mean I want the screen to be split, the right part showing camera No.1 and the left part showing camera No.2 The device can start with a push of button or a switch, I don't really care for this. And the nominal voltage is 12 v...

Hello, i am looking for a native Slovenian translator. ( good knowledge/experience of electrical engineering/technical field is preferred ). I need to translate a document from English to Slovenian. I have a 6 page PDF document with around 1000 words in total. Please let me know if you are interested in my project. We will discuss and negotiate the price and delivery time. Looking forward to hea...

Need to create a TX/RX Module with 24 volt controls for Residential Heat control. There will be two modules that speak to each other both able to TX/RX and after receiving information it will keep steady the 24 volt selection or off. TX/RX can be switch between WiFi/Bluetooth/Radio, or any other suggestions. It needs to smart connect, eg. if one loses connection it switches to other communicatio...

Technology research is already done. System architecture is already designed. Pre-built PCBs will be bought and used. Therefore we only need you to implement software/firmware and document it. Project is already split and documented as 11 milestones so that development can be done incrementally, step by step, and reviewed/monitored. Project is mostly firmware development for PIC24F. Some simple ...

Hi, thanks for listening. I need software to connect to a web service and send commands to a PLC (preferably via modbus). There will be about 10 commands to receive and send. We will receive some informations and need record on MS SQL Express, and need send signals (modbus) to my PLC This we will receive for add and remove data from my database. "addItemListaLocal RemoveItemListaLocal" ...

I need help designing a siimple circuit that controls an air brake system using a potentiometer

Firmware update OTA by GPRS. Hello, I work at Cofco International do Brasil, I have to do a meteorological station project, I have a working prototype, I would like to know if you can make a firmware update firmware via OTA through a GPRS module of the company SIMCOM, I have the models available: GPRS SIM5320A, GPRS module SIM5360A, GPRS module SIM7000A, GPRS module SIM7100A, SIM7600A GPRS M...