I have lot experience with Parallax serial comm to LCD serial display but I tried to do the same with 7 seg serial Led display # RB-Spa-444 but it do not recognise the commands and neither the command from the pdf of the product manufacturer. Is it possible to drive this display with Parallax Bs2? If yes, please can you give me an example or topic? If no, which microcontroller has the same language compatibel for the RB-Spa-444. Thank you
Hi Rene,
Welcome to the RobotShop Forum. One cannot assume that the protocol used for this product is the same as the one used for the Parallax LED display. It’s important to read the user guide and follow the serial protocol explained on page 1. You also need to set the baud rate (outlined on page 2). Last, ensure that not only the serial pin is connected, but also GND (always ensure GND is common). The BS2 allows you to set the Baud rate and uses one Tx/Rx pin for serial data, so it should be fine. The manufacturer is a proud supporter of Arduino and as such there is sample code for Arduino readily available.
Hope this helps,