The GND of the USB serial converter must be connected to the GND of the power supply. It is recommended to supply the HC 12 module with an external 5 V source, as it has some serial USB converters that do not provide enough current to supply the module.
To configure the module, the set pin must be connected to the GND according to figure 1 for the module to enter configuration mode. These modules usually come with some factory settings, so that we can communicate 2 HC 12 modules with an Arduino Uno, Nano we need to adjust some parameters like communication speed, communication channel, operation mode using AT commands. It is possible to connect two types of antennas in this module, a helical antenna that comes with the module or another antenna to be connected to the UFL connector. The HC 12 module is a radio transceiver and its operating frequency is 433.4 MHz to 473 MHz. Now, we will start the full presentation of the development of the fake pump receiver project with Arduino Uno.ĭEVELOPING THE FAKE PUMP RECEIVER PROJECT WITH ARDUINO UNOĪs previously mentioned, the project consists of creating the fake pump receiver with Arduino Uno. Writing the counting time on the I2C LCD display.
This is the second article that gives us a series of how to build a fake pump as an Arduino Uno and an HC 12 radio transceiver. Use the JLC-RECE coupon, earn a $2 off discount, and earn 5 PCBs.Īccess the link and download the Gerber files of the JLCPCB Arduino Compatible Printed Circuit Board. You can obtain the Arduino JLCPCB co mpatible PCB for your projects for $2 in your first order with the link: Earn my PCBs Arduino Compatible.
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