Help: How to simulate a phone off-hook? I'm working on a remote control project recently, but I don't know how to simulate a phone off-hook? Especially, what is the circuit after the phone is simulate
The situation is this: I plan to use an electromagnet to absorb iron objects. When the electromagnet is 5mm-1cm above the iron object, I power it up to absorb it. So I need to detect the distance betw
I finally built the frame these two days, and the effect is pretty good. I would like to share with you the effect of corner piece connectionPart of the frameThe whole machineLater I started to use ac
Maybe someone has come across the MAX7317?These days I'm trying to output a high level to a pin of MAX7317. Unfortunately, it seems that they can only output open drain. I don't know if there is a way
The development of TI DSP is similar to the development of integrated circuits. New DSPs are all 3.3V, but many peripheral circuits are still 5V. Therefore, in DSP systems, there are often problems wi