When it comes to snake lines, many PCB engineers are not unfamiliar with them. Snake lines are a commonly used routing method in PCB design, primarily aimed at adjusting delays and meeting system timing design requirements. However, many engineers often misuse snake lines, leading to reduced signal quality and a less aesthetically pleasing board. So … Read more
Analysis: If there is no WiFi, first measure the voltage at C5202_RF; it should be 3.8V. If not, connect a wire from another point to C5202_RF, then measure C5204_RF for 1.8V. If that is also absent, short R5208_RF, check and replace L5201_RF, and replace the WiFi module at C5202_RF! If the WiFi signal is weak, … Read more
What? Why do we say “develop”? It’s because it really is a competitive field!For many low-end BLE chips, the main function is simply wireless connectivity; being able to connect and transmit a few data packets is sufficient. Some even do not require a connection, as they can scan and advertise.So what is the biggest cost … Read more
Recently, I watched a detailed explanation of circuit design by Philip Salmony, a graduate student from Cambridge University, on YouTube. The project is called the STM32-based RF to USB adapter, abbreviated as STRF, which includes: High-speed USB interface STM32L4 as the controller nRF24 2.4GHz RF transceiver Of course, he designed it using KiCad, and his … Read more