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April 8, 2011
Product COM-12025 |
about 6 months ago
Has anybody had any luck driving these with a raspberry pi (Hardware version B). Some forms seem to indicate that the raspberry pi can not hand the timing requirements of the WS2812 and recommend using the ws2801 instead.
Product LCD-00258 |
about 2 years ago
I received this unit today and installed it on a bread board with my 16x2 display. I then connected to an Arduino (Model: Ethernet as follows)
Arduino (GND) to BackBack (GDN)
Arduino (5V) to BackBack (5V)
Arduino (Tx) to BackPack (Rx)
I then powered up the arduino and saw the “Sparkfun.com SerLCD v2.5” on the LCD and then it went away. I did a quick hello world sketch for Arduino at 9600 baud and uploaded to the arduino. Unfortunately, all I got was gibberish. I saw several reports of receving the unit set to the wrong baud rate. I then wrote the following sketch to test the baud rates and reprogram the device to 9600 baud.
int g_iBaud = 2400;
// g_iBaud = 4800;
g_iBaud = 9600;
// g_iBaud = 14400;
// g_iBaud = 19200;
// g_iBaud = 38400;
Serial.write(0x7C); // Special Char Command
Serial.write(0x0D); // Reset to 9600 Baud
Serial.write(0x04); // Set for 2 Line LCD
Serial.write(0x06); // Set for 16 column LCD
Serial.write(0xFE); //command flag
Serial.write(0x01); //clear command.
Serial.write(0x41); // Write out the letter ‘A’
Serial.println(g_iBaud); Write out the Set Baud Rate.
I have tried each ot he supported baud rates and still have not had any luck getting the device to give me anything but gibberish after the spash screen goes away. I have also tried adjusting the various delays.
Thank you in advanced for any help,