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Check hardware schematic

Hello, I have made the circuit attached. It is basically, a wattmeter with WiFi (ESP8266). It has been designed to be connected to an European plug (230VAC).

-This wattmeter can turn on/off the current flow.

-The ESP8266 will be programmed using a USB to TTL adapter.

-It has 2 ways of measure the current (using integrated ADC in ESP8266, or using an external ADC).

I need someone to verify the circuit has no errors.

Additionally, I need suggestions on how I can improve it to reduce costs.

Please, tell me how are you going to verify the circuit, and what are you going to deliver to me.

I want to be totally sure, that I can send this circuit to production and everything will work as expected.

Kĩ năng: Arduino, Kĩ thuật điện, Điện tử, Vi điều khiển, PCB Layout

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Về Bên Thuê:
( 6 nhận xét ) Porto, Spain

ID dự án: #18144674

27 freelancer đang chào giá trung bình $162 cho công việc này


Hi I am experienced electronics engineer with more than 8 years of experience. I have completed a number of projects on circuit design. I can do it for you. I have completed a number of projects here Please review m Thêm

$200 USD trong 3 ngày
(244 Nhận xét)

Hello sir, I have experience in designing electronics circuits and can make your project. i will make your project completely on my side and will deliver a working prototype. I can also develop hardware compatible and Thêm

$200 USD trong 15 ngày
(35 Nhận xét)


$111 USD trong 2 ngày
(35 Nhận xét)

Hello, We are a design team include 3 groups: System Design, Layout PCB & Mechanical. We have +15 years experience of Developing custom electronics, Hardware Design, Firmware, Software and +5 years experience of 3D Thêm

$250 USD trong 3 ngày
(18 Nhận xét)

Dear Sir. I have seen your description very carefully and posting to you my idea. If you give me a chance to interview, I'll explain in more detail and I'll do my best for you. I will work hard and hard for complete Thêm

$155 USD trong 3 ngày
(21 Nhận xét)

Hi I am interested to your project.I am familiar with electronics, microcontroller as well as PCB design by Eagle. Thanks.

$250 USD trong 10 ngày
(79 Nhận xét)

Hello. I am an excellent circuit and PCB designer. I have developed projects using ESP32 and ble module. Also, I have worked in PCB design of 2 ~ 38 layers with very high frequency for 4GHz and high speed RAM interf Thêm

$166 USD trong 3 ngày
(7 Nhận xét)

Hi, I have checked your attachment. On AC/DC block diagram, I don't see any problem since that is standard circuit for switching power supply. but I will looking for deep circuit analysis if you want me to do it. So, Thêm

$150 USD trong 5 ngày
(21 Nhận xét)

Hi, I am Janith Kodithuwakku. I am an Electronic engineer with more 4 years of experience in Electronic design and product development. I think I can help you with your project. Please refer my linkedin profile if Thêm

$150 USD trong 3 ngày
(6 Nhận xét)

I am an Electrical Engineer having specialization in Electronics Control and Power, teaching at well known University in Pakistan. I have my BS degree in Electrical Engineering with specialization in Power. Also i hir Thêm

$50 USD trong 1 ngày
(3 Nhận xét)

Hi Dear, I can help you in this project. This is exactly what we are doing in our project. Basically I am running a startup named as Invotech in the field of IoT. We are making different smart products. In one of o Thêm

$222 USD trong 3 ngày
(3 Nhận xét)

I have experence with IoT project. I can review schematic, pcb layout and 3D model for complete integration

$166 USD trong 5 ngày
(1 Nhận xét)

I am an experienced Electrical and Electronics Engineer living in Cyprus. I am specialized in Microcontrollers ESP3366, ESP32, Arduino, RaspberryPi. I also worked on lots of Matlab and simulink related projects.

$66 USD trong 1 ngày
(2 Nhận xét)
$49 USD trong 2 ngày
(4 Nhận xét)

Hello Hiring manager How are you? I am an expert in electrical engineering with more than 8 years of experience and I have rich experienc e in developing various IoT devices using ESP8266 (it has only WiFi), ESP32 (it Thêm

$155 USD trong 3 ngày
(1 Nhận xét)

Don't Forget ( Expert in everything was a beginner ). We have lot's of experience in this field but we are new on this online platform. Give us a chance to prove you that we are the best. Say hi in the chat box and we Thêm

$61 USD trong 2 ngày
(1 Nhận xét)

i have experience for coding esp8266 with arduino ide. your project is awesome. give me chance to help you.

$155 USD trong 10 ngày
(0 Nhận xét)

Dear Sir. I am very interested in participating in the revision of your circuit. Throughout my career I participated in many circuit reviews and fault detection. I am a Senior Electronic Engineer with experience Thêm

$200 USD trong 3 ngày
(0 Nhận xét)

I am an electronic designer specialized in embedded systems. I have more than 10 years developing systems from pcb to applications. I've designed carrier boards for ARM soms and display boards(using hdmi and lvds). I Thêm

$111 USD trong 3 ngày
(0 Nhận xét)

Hola, Soy Ingeniero de desarrollo en software y hardware, tengo experiencia mayor a 7años desarrollando sistemas completos, desde el diseño y fabricación de los circuitos electrónicos pasando por las interfaces HMI, ha Thêm

$222 USD trong 3 ngày
(0 Nhận xét)