Circuit and PCB design for solar battery charged product
$250-1000 USD
Pagado a la entrega
Description of system:
The system consists of a battery, load (LED strip), solar cells, light sensing device and motion sensing device. The Load, Solar cells and Battery are independent of the Printed Circuit Board.
The desired operation is described as:
When the product is in the dark, the product will be “armed” thus enabling the LED light strip to be turned on if motion is sensed by the onboard motion sensing device.
If motion is detected the LEDs are energized and remain energized for a length of time after this event. (I think the time interval will be required as the motion sense devices I have seen have a random signal or on off triggers).
When the product is in daylight, the PCB will then need to control the solar charging of the battery pack via the solar cells.
Ideally I would like the system to be able to illuminate the LEDs for a minimum of 4 hrs. per night. The product will be mounted with the face of the solar cells perpendicular to the ground and on the exterior of motor vehicles. It is assumed that for an optimum charge the vehicle will have been outdoors for the daylight hours.
Components: (The values I have are simply where I am at….. not sure how correct any or all of them are for a fully functioning system.
Solar cells: (2) 3Vdc cells producing 250mA (In series charging at 6vdc?)
LED light strip: (1) 3Vdc with approximately 120mA current draw
Battery Pack: (1) pack comprised of (3) 1.2 Vdc lithium ion cells operating at 3.6Vdc. (1200 mAh ????)
Vibration sensing device: (Signal Quest vibration motion sensing component (This was simply something I found that looks like it may be a cost effective solution????)
Light sensing device (photo cell????) not sure, but something inexpensive like on throw-away solar/LED yard lights. This may be mounted on the PCB in a way to have it in the front light exposed face of the product or mounted independently of the PCB.
I will require an NDA.
Nº del proyecto: #8656313
Sobre el proyecto
31 freelancers están ofertando un promedio de $778 por este trabajo
hi sir i am an expert electrical engineer i can do it for you i have almost 7 years of experience in this field i assure you quality work and on time delivery please have a look at my profile i am waiting for your rep Más
I am an Electrical Engineer having specialization in Electronics and Control, teaching in Electrical Department at FAST National University Pakistan. I am also continuing my MS degree in Electrical Engineering with spe Más
I have over 35 years experience as an electronic design engineer, please see my profile for more details I have just recently designed a solar charger using the highly efficient LT3652 Solar tracking device so feel s Más
Hello, Have a great Day. My name is Shahbaz Ali. I am running a company for prototyping Electronic devices. We will deliver the fully working device. We have already developed Solar charging circuits, motion sesns Más
Hi I am interested to this project. I am familiar with electronics, PIC microcontroller as well as PCB design by eagle. Thanks.
Hi, I am a post graduate power electronics engineer and having very good industrial experience in product design and development. I am excellent in Regulated power supplies design, sine wave Inverters, solar grid tie Más
Hello, I have read your project information and I have some solution for you based on my previous experience: I have work with a very good solar cell that can provide 4.5V and close to 250mA current and works excell Más
I have read and fully understood your requirements.. Please open chat to discuss further… _____________________-----------------------------------_____________________________------------------
ELECTRONICS =========== I have experience on Analog for 30 and Digital for 20 years. By using micro controller on any type of device including firmware and windows software. Basically designer and manufacturer of Ana Más
Hi, I am an experienced engineer that specializes in new product design and development. I have designed systems that incorporate solar cells and LEDs and I can perform the HW design (PCB, Gerber files), SW design a Más
hello employer we have very skilled team of experts in the relevant field. we are interested in this project. kindly reply me for more details.
Hello, i have 9+ years of industry experience in embedded hw and sw design. i have the expertise to complete this project. kindly get in touch with me for more information/details. i am willing to sign the NDA.
