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Author Topic: Optiboot with FTDI breakout removed  (Read 1693 times)
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Tallahassee, FL USA
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A delay of 110 milliseconds resulted in failure. I have set it to delay(150).

TIM7, without a serial LCD how did you know the code was working on the Arduino Pro?
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Switzerland
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Oscilloscope on pin 3
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Tallahassee, FL USA
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OK, I'm an idiot.

It is not the Optiboot that is the problem but the serial LCD. The LCD on power up or reset goes thru a startup sequence. Sending characters to it before the sequence completes ends in hangup. I need the delay for that reason. I should have known that because I wrote the serial LCD code, though it was 2 years ago.

The Optiboot is fine.
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Ah hah!  Thanks for the update...
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Doesn't the PHA  LCD#117 serial display 'backpack' use a PIC16F1827? I have several of the kits, unused because I found a Much better one from Liudr here in the forum. Liudr's "Backpack" will handle a 4 X 4 Keypad, and a sounder or buzzer too any configuration of LCD can be handled too I've used them on 2 X 16 to 4 X 20 and a few odd ones too.  Much better product. I have 2 or 3 of the PCB's and 3 Kits, all unused that I will never use as they really don't give much "Bang for the Buck". I'll probably donate them to a tech school that can use them.

Doc
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Tallahassee, FL USA
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The #117 has a beeper connection and a command that works.

I have found that the #117 is erratic at 9600 baude and a emulation I wrote for the PIC 16F886 works fine. I expect the Atmega328P should work also.

Ultimately, I will use this serialLCD in a process controller.

I have looked at the product you mentioned, but the info he provides is sketchy and I don't wish to buy one to determine how well it works.
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