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Nice, Hippy(y)

I did measure with a multimeter on the input resistor, unfortunately not on the 18M2 leg directly. As it turns out, thanks to the little test above, it was a bad ic socket. Once I replaced the socket, problem solved. Great support here, thank you.

Hi I am trying to read two voltages from two inputs. One reading is correct and the other is messed up. Reading off B.4 is correct. I get ADC value 618 which translates to 3.02 volts Reading off B.3 is wrong. The adc value is 468=2.28V. It should be zero, since I have that input grounded. I...

What download cable are you using? On my DIY USB cable I had to reverse the signal polarity to work.

@ westaust55 I'll try that. That saves a few lines of code. I also will attempt to program an PIC16F628 chip with LCD117 firmware. I bought them for $0.65 ea. at BGmicro a couple years ago. Now sold out. DigiKey caries the PIC16F1627 for $1.52 ea. which is the chip in my kit.

On the working circuit I measured all signals directly at the LCD and compared it to the not functioning setup. The RS signal (pin4) was always High on the not functioning circuit. Upon inspection of the LCD117 driver chip socket with an magnifying glass, I discovered a tiny solder bridge...

Since I am sure that both parts, LCD and the driver chip are OK, I will concentrate on the 18M2 chip pins. I already tried C.3 for Serout, no change. I'll report back if successful. Will take some time though. Thank you for your suggestions so far. One more question, I tied all unused I/O pins...

I re-assembled the old circuit using the same 14M and the LCD117 driver chip (Phanderson). Upon power up, the LCD boots immediately and the code runs fine. Everything seems to be (almost) the same except the serout pin. Even the pause times are less. So where is the fault? Old code: #Picaxe...

I was successfully using an old 14M chip with LCD117 9600 baud driver chip, to drive a 16x2 display. Worked fine. Then I switched to an 18M2+ chip, because I run out of memory. The LCD display stopped working. Upon power up, it is showing only squares in the first row. I double checked for...

He mentioned also "or similar". Wondering which chips are similar to 16F1827

hippy, you're a genius! It works. Thank you

Will the 14M support 9600 baud? I taught 2400 baud is max? Update: the editor won't let me use 9600 baud, so the 14M doesn't support it. I have a bunch of these old picaxe chips and wanted to use them up in some simple projects. Oh well, I'll try to re-programm the driver chip with 2400 baud code

Hi I am assembling a small project from parts I have in my storage bin. This project is using an LCD display. I have difficulties displaying anything but the cursor and some "X's". I am using an NOS 14M chip along with a LCD117 driver chip, ordered long time ago from PH.Anderson (RIP) Here is my...