Prototype LED Osculator - repost 2


I need a circuit that can blink 50 LEDs at a speed of 1Hz adjustable up to 10MHz or more.

Adjustable resolution of 1Hz steps.

LCD screen to display frequency.

Buttons or dials to adjust speed.

Perhaps 1 button for Hz, 1 button for MHz?

On/Off button or switch.

9 volt operation for prototype.

and if that works, I will need a 12 volt model with no LCD screen,

12v model should work only on a programed frequency. Not adjustable.

12v model should power 100 LEDs, in two sets of 50.

I build my own circuit board and prototype.

Please no milestone payment until prototype is working.

I have paid two Freelancers before that collect money and provide broken designs (no hardware) that never works so I will not pay anything until this one works, as per [url removed, login to view] recommendations.

PIC chip is ok and preferred. =)

Thru hole components preferred for prototype.

SMD components are ok for resistors, transistors, diodes, capacitors, but NOT for IC or PIC.

Thru hole only for IC and PIC.

Skills: Product Design, Product Sourcing, Supplier Sourcing

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Project ID: #5019923

6 freelancers are bidding on average $496 for this job


Hello, electronic engineer with over 15yr experience available. you can check my works on I can design and provide full working RoHS prototype and all documents. expert with PIC cpu. ple More

$1666 USD in 35 days
(3 Reviews)

Sorry to hear about your bad experience here at freelancer. I can do your project, can you tell me do you want two designs ? one with LCD and dial and the other one without them ?. I have 12 years of experience in desi More

$210 USD in 10 days
(1 Review)

Dear Sir, This is Ahmed Hamdy an Industrial and CAD Engineer for more than 8 years, I'm working as R&D Engineer for 4 years, I can do this project in a very very short time with a high quality with the lowest price

$388 USD in 5 days
(2 Reviews)

Hello there, I have years of experience in hardware/firmware/Software development. I am trying to get projects in freelancer. I shall design the circuit mentioned in the project listing, develop the firmware for More

$155 USD in 7 days
(0 Reviews)

Hello Zombie, I am again interested on this project. Pay only when the prototype is working. Ready to start. Kind Regards Shebeer

$277 USD in 3 days
(0 Reviews)

Hello Sir, We have done several LED, Wireless, USB and Custom Prototype development projects on Please see our profile and portfolio for more information. This proposal included 1. Hardware de More

$277 USD in 8 days
(0 Reviews)