I use the AT+CNMI=3,1 command, but when performing GPRS data transmission, the URC of the new SMS is sometimes received, and sometimes not. What is the reason? If the URC of the new SMS is not receive...
Setting bit 0 of ADCCON to 1 starts ADC conversion. During the conversion process, bit 0 will become 0. However, after I set it to 1, it has not started. I don't know what went wrong. Below I will pas...
This article uses 12 components to make a miniature wireless FM microphone with a stable operating frequency and a transmission distance of about 30 meters . It can reach more than 100 meters when pow...