Recent content by ilik

this human machine interface uses UART protocol for communication https://www.itead.cc/wiki/images/8/8b/Nx24.jpg. here is wikipedia article on UART https://en.wikipedia.org/wiki/Universal_asynchronous_receiver/transmitter . if this info is not enough for you, search for uart documentation for...

allright, thank you everyone. i come from neighboring field (Electronics engineering) and that's why i have no knowledge of even basic things in Mechanical engineering. on youtube, "Toggle mechanism" revealed many versions of similar systems. thanks for the help.

i know sparkfun sells it but i need to create miniaturized version of that cover with some custom adjustments for my project.

Hi. I'm searching for a name of the spring mechanism that snaps-up and snaps-down this type of Switch cover https://cdn.sparkfun.com//assets/parts/6/9/9/0/11310-03a.jpg . on the left side of this red cover, you can clearly see the spring and few other things, that makes it to resist any change...

well, correct me if i am wrong but; constant current source would definitely fry a laser diode. because as the diode heats up it increases it's resistance. so if heated diode would rise it's load impedance to say 1 ohms,then 1.8A*1 Ohm = 1.8volts. so, 1.8volts (drop)* 1.8A = 3.24 watts. =...

:))))))) do you know what my salary is? it's F***ing 423$ i will have to starve my family and myself for months to rise up the money. price+customs+delivery will exceed 650$. and besides all that, this product does not promises a collimated light they say it is well concentrated spot light but...

you are right my mistake, zoom lens are not collimated. i simply need a cheep collimated 15-20 cm diameter UV light source that is it.even CFL's UV is enough for me. something like this http://www.globaltestsupply.com/product/spectroline-sb100p-uva-lamp-concentrated-spot but this one does not...

strictly follow the guides. solder +5V as directed on picture and nowhere else(do not exceed 5 volts). if diode burns that means current regulation is not working properly. do not use 3.7V as source. use +5V because driver circuit is engineered the way that it expects +5V. one more thing...

firstly, capacitors in DRAM cell not only leak, sometimes they also Charge by a mistake. so refresh means that some Caps need to be zeroed down to 0v , some maxed up +3.3v. you must have a voltage level detector in there. if after 70 or so microseconds a Cap voltage is below central threshold...

aam... why wouldn't you buy a Motor Driver IC with parameters of your motor? it comes with a datasheet with connection diagrams and operational manual. these specialized IC s are chap, tiny,Bipolar,have built in voltage/current limiting/regulation and short circuit protection,are available for...

firstly hello to all, I'm new here and i'd like to ask admins to forgive me if i posted this thread in a wrong place - i could not find Optics section. i need a fresnel collimated UV light with adjustable focus. don't trust the ordinary lens because of optical aberration. one with a diameter of...