Arduino Based Gpsdo3/28/2021
An amateur radio guy put a nice video on YouTube in which he used a PIC-based controller to read and display the status from his Thunderbolt: Id like to try to use my Uno to do something similar.I have an LCD1602 display from an Electronic Brick starter kit that runs off of Bus 2 on the seeedstudio interface shield.
Arduino Based Gpsdo Serial Port IIf I buy a TTL-to-RS232 level converter, can I sendreceive simple NMEA-like commands on the Uno hardware serial interface (Pins 1 and 2, as I understand it), and then receive, decode, and display a simple message on the LCD such as an Alarm condition or Receiver is Locked Will writing the LCD conflict with TXRX on the serial port I assume the Uno is as powerful as the PIC and has the bandwidth, but is that a rash assumption Any ideas or coding suggestions would be greatly appreciated.The TTL-USB chip 8u2 and the main atmega328 are both connected to these and you should use other pins and soft serial.![]() Theyre at the same site, the inventor of reverse geocaching box. Ive been using these libraries and a different GPS for quite a while. You need to be sure that it is outputting real RS-232 voltages, -12V, and 12V. If it is already outputting 5V TTL, then its easier, no conversion. To convert between RS-232 and TTL, you need a chip like MAX232 or ADM233LJN. There might also be reversed polarity issues that can be addressed by TinyGPS. I downloaded it and unzipped it to a folder in my Libraries folder (which is inside my Arduino0021 folder). This action put a NewSoftSerial.h file and a NewSoftSerial.cpp file and a Keywords.txt file in that folder. ![]() Nowhere could I find examples of a receive buffer, so I made my own. Only working at 9600 bps, so I dont think it is a timing challenge.
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