Microcontroller meter reading problem, water meter and gas meter use reed switch sensor, how to transmit the signal to the microcontroller? What type of signal? How should the meter output pulse?
[i=s] This post was last edited by 我为伊狂 on 2019-2-11 09:12 [/i] In a product designed by me, STM32F107VGT6 and DP83848CVV are used to form a LAN driver circuit (MII mode). The functions are all normal
[i=s]This post was last edited by Tiantian1 on 2022-7-26 15:15[/i]At present, the signal is amplified by AD623, then bandpass filtered and fully amplified by OP07. The sensor is connected with a 1-met
[i=s]This post was last edited by hujj on 2020-11-12 17:47[/i]I originally planned to test the serial communication first, but the two examples of serial port interrupt and serial port DMA provided by