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--- builderpages:gary_kaufman:ascii32_terminal [2021/09/17 09:15] – Revision from 2021-09-17
+++ builderpages:gary_kaufman:ascii32_terminal [2026/06/15 12:59] (current) – external edit 127.0.0.1
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+/* Imported from Wayback Machine
+   Original URL : https://www.retrobrewcomputers.org/doku.php?id=builderpages:gary_kaufman:ascii32_terminal
+   Snapshot date: 2020-02-24
+   Generator    : wayback-archiver
+*/
+I arranged a bulk purchase of PC boards and programmed PIC32's / Parts for **Geoff Graham's PIC32 Ascii Terminal**.
+[[builderpages:gary_kaufman:ascii32_terminal|{{builderpages:gary_kaufman:images:icon.jpg?200}}]]
+//I still have a few PC boards and parts available.//
+Here are some notes from the project:
+Geoff's documentation for the ASCII PIC32 terminal are at http://geoffg.net/terminal.html
+Construction Notes:
+The PIC32 is pre-programmed with Firmware V1.3 and I've pre-tested them all in a working setup.
+Really a quick easy kit to construct, took me under 30 minutes to have it up and running.
+There were some small differences between the schematic, parts list, and silk screening.\\
+The schematic and parts list use a 10K/100K pair of resistors for RxD, but the silk screening has 4.7K and 47K.\\
+I provided the 10K and 100K pair. The 4.7K just above the TTL Serial connector should be the 10K, and the 47K resistor next to\\
+the USB connector should be 100K
+I sourced 1/8 watt resistors for all but the 82 ohm resistors. This was by error, but shouldn't be an issue as none of them will\\
+dissipate anywhere close to 1/8 watt.
+The VGA connector I received has pins that are a bit narrow, but with a slight bit of spreading will fit the PC board just fine.
+The DIN Keyboard connector has two tabs that need to be clipped off to fit the PC board.
+The pin strip can be easily snapped for the various lengths needed with lots left over.
+There is really no need for the ICSP connector unless you plan to reprogram the PIC32 with the PICKIT3 programmer.
+The LED mounts with the longer lead as “+” and the flat side away from the USB connector.
+Don't forget to connect one of the “BLU” “GRN” “RED” pads! I'd suggest the “GRN” personally.
+Testing:
+Jumper the USB power connector, Baud Rate jumper “A” and the Rx/Tx pins with the three jumpers provided.\\
+Hook up a standard PC keyboard, VGA monitor and USB power adapter.\\
+The LED should light, you should get a welcome message on the screen, and key strokes should echo to the screen.
+SHIFT-F12 on the keyboard will bring up a menu.
+[[builderpages:gary_kaufman:ascii32_terminal|{{builderpages:gary_kaufman:images:rs232.jpg?200}}]]
+USB Driver for the board is on Geoff's site at [[http://geoffg.net/Downloads/Tracker/Silicon_Chip_USB_Serial_Port_Driver.zip|Silicon_Chip_USB_Serial_Port_Driver.zip]]
+The RS232 voltages are really TTL level only, which won't work properly in all circumstances.\\
+Very inexpensive boards are available on Ebay to handle TTL<→RS232 voltage conversion.\\
+Search for “RS232 Serial Port To TTL Converter Module DB9”.\\
+I paid under $1 for a module and connecting wire jumpers including shipping.
+----
+[[builderpages:gary_kaufman:start|Back to my main builder page]]