Touch Sensor with LCD voltage display

I'm looking to have two very small circuit boards designed of which I'll need, of course, the Gerber file, as well as the parts list (and anything else you can think of that I would need to submit to a circuit board printing company and other info needed to assemble the boards). But here's what I have.


The power source will be a 3.7 volt high drain battery, (fully charged around [url removed, login to view]), but I need the voltage out to be 3.42v. The first circuit will consist of, stepping the voltage down to [url removed, login to view] output, along with, a touch sensor activator. If you know of a touch sensor button that is 1/4" in diameter, that either lights up when pressed against, or not, (but preferably does like the one in the following example... [url removed, login to view] .......... however, the one in the example is square and thin, I would require mine to be 1/4" round diameter, and 1/4" minimum to 3/8"maximum thickness. I like that it is back-lit with a power symbol ), then that's great. But if the button has to be stainless steel or some other conductor, then that's what it has to be. *shrug* I need it to only function when it is touched directly, and not through dielectrics of any sort if possible. This isn't proximity, this is to be direct contact, again, if possible (meaning, not through clothes, if I have it in my pocket I don't want it to cut on if I touch the button). This circuitry will need to have on/off capabilities in the form of, when the touch sensor is touched 5 times within 2.5 seconds, the device will cut on if it is off, and when pressed 5 times in 2.5 seconds, will turn off if it is on. When in the on position, and the touch sensor is pressed and held, the device will put out [url removed, login to view] until the sensor is released OR it has been held for 10 seconds, whichever is shorter. It must have a 10 second maximum operating time before requiring the user to lift their finger and press (and hold) the touch sensor again. So this will have, a [url removed, login to view] coming in, with the 3.42v+ going out to the Load, and triggered by the 1/4" diameter round touch sensor. Within the on/off capabilities, if the touch sensor is pressed 5 times within 2.5 seconds, the LCD voltage indicator (in next paragraph) will blink three times to let the user know the device is turning on/off. And while the user is pressing and holding the touch sensor, the LCD voltage display will turn on, displaying battery life remaining, and when the button is released, the LCD will also turn off awaiting another press. (I would prefer the LCD to fade in/out during it's on/off times, I'm sure this is done with capacitors. but I'll leave that up to you, the engineer :P)

I don't know if this is standard in circuitry and not even necessary to mention or not, but it will also need short circuit protection, with the LCD display blinking 3 times when the button is pressed to indicate that there IS infact power, however, not functioning or sending out the [url removed, login to view] until the short-circuit is corrected. Am hoping to get this as absolutely small as possible, thinking 10mm x 10mm range for both PCB's, and 10mm W x 8mm H for the LCD display if possible, but whatever is necessary with "as small as possible" in mind. Thin as possible is also a must. If these can be done on a single side of a PCB that would be excellent.

PCB#2: Blue back-lit with 4 (or 5) white vertical bar segments (if possible, but blue back-lit a must) voltage indicator (battery life remaining). If there are any questions, please don't hesitate to ask! Thanks for looking! P.S. All parts will need to be in-stock items that can be ordered multiple times. Thanks!

Will also need the program files for any micro-controllers involved, as well as a parts list with item numbers (which I believe I already mentioned, but figured I should mention again anyways).

Taidot: sähkötekniikka

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Tietoa työnantajasta:
( 0 arvostelua ) Hampton, United States

Projektin tunnus: #4264994

4 freelanceria on tarjonnut keskimäärin %project_bid_stats_avg_sub_26% %project_currencyDetails_sign_sub_27% tähän työhön


hi, i am an electrical engineer and an embedded system developer. i can help you with this project.

$650 USD 15 päivässä
(34 arvostelua)

Dear Sir, We are Reserach and Development company whose working area are : -Digital Motor Control -Analog Design -Electronic Design -Power Electronics -PCB design -Embedded system -Matlab -Simulation of ha Lisää

$200 USD 4 päivässä
(9 arvostelua)

Hi, do you need a professional help?

$180 USD 5 päivässä
(4 arvostelua)

Hi there! What happens? When you close the project and open another?

$250 USD 15 päivässä
(1 arvostelu)

Hi, My name is Randy Boulter, and I am a digital design engineer with 25 years experience. I am semi-retired (early) and electronics is a passion of mine. I have 12 years dealing with digital and analog circuit des Lisää

$190 USD 14 päivässä
(0 arvostelua)