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Simple Oscilator (555?)  

Simple Oscilator (555?) is project number 223070
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Status:

Selected Providers: tlkannan

Budget: $30-250

Created: 02/07/2008 at 14:04 EST

Bid Count: 17

Average Bid:
$ 85

03/08/2008 at 14:04 EST

Project Creator: paulminize
Employer Rating: (No Feedback Yet)

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Description

Hi i need a simple oscilator designed to alternate on/off 2 x 12 volt(60w) bulbs in a similar fasion to police car front lights.

I think maybe 555 timer is the best way, but i need this interfacing with 12v (60+Watt) circuit with us of mosfet or similar. Would also like to include function so both lights could be on or off together. (maybe this is all better done with simple PIC?)

Would also be interested in actual supply of completed circuits not just design

If interested let me know

Job Type

Messages Posted:2 View project clarification board Post message on project clarification board

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100

6 days

02-07-2008 23:42 EST

We will use a PIC/atmel controller. Option can be there to select between alternate light off or same time light on/off through a jumper. Yes we can do the full PCB design and mount the component, this will be extra cost pcb desgin+fab+components+transportation

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100

3 days

02-07-2008 19:58 EST

(No Feedback Yet)

I would use a Microchip PIC16F74 microcontroller for the timing. One problem with this project is that the on/off response of an incandescent bulb is slow. The element in an incandescent bulb has to heat up in order to emit light. A better design would be to use an LED. I can do it either way but if you want the bulb to turn on and off very fast, an incandescent bulb won't work.

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100

1 day

02-08-2008 00:04 EST

(No Feedback Yet)

I can provide you the tested design which 'you' can build for this amount. If you want the prototype built and shipped, you will have to pay for the proto and shipping. I have a 20 yrs background in electronics design and can help you on any other project of higher complexity easily. See my profile to know more about the kind of work I do

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100

30 days

02-08-2008 00:34 EST

(No Feedback Yet)

I make this in PIC 16f675. It include PCB layout,component placement,BOM,schematic and you can suggest the things that you need to complete this project.. Im Jet from the Philippines. thanks.

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80

3 days

02-08-2008 04:40 EST

(No Feedback Yet)

While using the 555 makes a simple circuit a PIC could be more interesting. Any PIC that suits your budget for builds. If a PIC is used the following can be implemented. 1. Use of buttons instead presets to vary blink/alternate rate. 2. Active shutdown on short circuit. 3. Mode change on different inputs (say gear/handbrake) But do consider your convinience in programming and testing PIC based stuff. Service inlcudes Schematic, PCB Layout, BOM details and firmware (if a PIC is used).

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40

10 days

02-08-2008 04:52 EST

(No Feedback Yet)

can be done with without micro controller just using by adjusting the rate of on and off. frequency control pot will be kept for the control

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250

10 days

02-08-2008 05:32 EST

(No Feedback Yet)

Please see PM for details!

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35

10 days

02-08-2008 08:37 EST

(No Feedback Yet)

simple and best circuit with pcb desige

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70

7 days

02-09-2008 10:04 EST

(No Feedback Yet)

Hi. Both solutions have pros and cons. The one with 555 timer: Pros: only hardware, reliability. Cons: hard to modify. PIC solution: Pros: Easy to upgrade, more capabilities. Cons: need to program every chip (if you want to build many). So, the best solution depends on requirements. I'll enjoy designing (and making if you want) anyone. Bye

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50

5 days

02-09-2008 17:37 EST

(No Feedback Yet)

I'll provide you a prototype with a number of jumper arrangements, thus you can choose your own timing and flashing mode. The design will be with AT89C2051 uC. If you want to produce this prototype in large, I'll support you with Single side PCB design (10$ extra). I'll provide you two programmed AT89C2051 uCs in extra (No Additional Payment). For further programmed ICs: 2$ for each IC (includes the Cost of the uC). If you provide the uCs, then $1 for 5 Nos.

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40

3 days

02-10-2008 08:09 EST

(No Feedback Yet)

I can help you. It's easy with me. Contact with me, please!

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50

16 days

02-10-2008 10:22 EST

(No Feedback Yet)

I will do my best for you by this project.

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50

2 days

02-10-2008 22:35 EST

(No Feedback Yet)

We have complete working project with us which will reduce your testing time may some changes required to reach your detailed requirements if intrested mail me bye pradeep

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100

2 days

02-13-2008 07:34 EST

(No Feedback Yet)

i've made similar circuit before

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80

2 days

02-14-2008 00:25 EST

(No Feedback Yet)

Hi, It will include schamatic, layout and one proto board on GP. It excludes PCB fabrication charges. If PCB fabrication required then it will take 15 days. Do writes us PM. Thank you, Embin Team

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100

7 days

02-14-2008 04:18 EST

(No Feedback Yet)

please provide information detailed according to your requirement(input voltage and so on).

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100

5 days

02-15-2008 11:05 EST

(No Feedback Yet)

I can give you the required project with a programmable timer having ATMELs microcontroller.

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