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Hi all,
I need to make a flat panel with switches.
My first try was with a lexan 100µ film and tact switches behind.
I have some problem because the lexan is too rigid and sometime the swich
do not "come back" ( it stay "on" position )
Do you know some company that could do flat panel front...
Hi all,
I have to print to a RS232 printer from a µcontroler, Ok it quite as easy as writing to serial... but a need some info on managing "out of paper", "end of page", buffer ..... does someone have a code sample about that ?
I also appreciate info on printig to // printer but with IOs
thanx
If someone had info or experience on SMD soldering oven. I'll appreciate.
I am curently using a classic soldering Iron quite succesfully , but would like to know if reflow oven or air soldering machine are better ?
It is only for prototyping and small production.
Thanx
MDamdam
I plan to make a µControled stepper driver for 3axis cnc machine ( plasma cutter ).
Does anybody knows where to find GCode specification ?
There is many "old designed" board based on parallel PC port + dos based software.
I would like to make an RS232 ( -> USB ) linked with GCode interpreter...
Thanks all,
those circuits are intersting but my main problem is to find small sensors in the range of 0-50g ...
Most of time I find load cells for a range of min 0-5Kg .... difficult to achieve the 0.1g in this case :?
I have heard about piezo devices principle but cannot find the...
build a balance piezo
Hi all,
I am looking for infos about building an electronic weighing machine.
I dont know the principle used on small letter balance ?
Is it based on strain gauges, piezo, resonnant device ???
Where can i find sensor for weighing small devices of approx D=3cm and 25g...
free avr samples
Hi all,
I recently asked for Coilcraft inductrors samples, i recieved an auto-reply mail to tell me that it was OK ... but received nothing.. I am in Europa, did somone here have a positive or negative experience with them ?
I am a design engeener, I remember, 20 years ago...
Speed measurement
the only working solution is doppler microwave radar.
It is easyer than you can imagine, you only need a CW source and a receiving antenna ( cone for example ). Adding source and received signal will give you a frequency in the Hz..kHz domain: easy to manage...
the problem is that I can only use I2C : only SCL and SDA wires can go out of my µC PCB ....
If I can not find an already existing application, I'll use a // printer and a standard I/O for I2C.
mdamdam
Hi all,
I am searching a small printer for printing Ascii from a µC.
The goal is to print small log files.
I only have I2C port available. Do you know an existing application ( intefacce or small printer like cashpoint ).
Thanks
mdamdam
I am working in Delphi,
I need to convert a 4 byte floating point number ( single ) into the 4 variable of one byte.
example:
var
i : single;
i1,i2,i3,i4 : byte;
begin
i:=15;
...
// in memory i= $41 70 00 00 in IEEE 4 byte format
how can I convert i to i1=$41 , i2 = $70, i3=$00...
Hi all,
The Epson 950 cost 350€ and can print on CDs and on other flat support up to 2.5mm thick.
Who have an idea or experience of material ( plastic ) rugged enough to be printed and flexible enough to make a flat keypad ?
It will be a pretty solution for protoypes !
MDamdam
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