GPIB-USBCDC is an interface bridge between GPIB (HPIB) and USB communication device class. It is Prologix GPIB-USB adapter clone with EFM8 Universal Bee or C8051F38x microcontroller.
- Connect GPIB-USBCDC to the PC. GPIB-USBCDC is recognized as serial port, which will be installed with CDC inf file.
- Other usage is almost same as Prologix GPIB-USB adapter. Please see that product manual.
EagleCAD files are available (ver.1 schematics and layout. Its components are listed in BOM. The board design is published under Creative Commons Attribution-ShareAlike 4.0 International.
| Part | Value | Package | Multiple |
|---|---|---|---|
| C1, C4 | 1u / 6V3 | 1005 | 2 |
| C2, C3, C5, C6 | 0.1u / 10V | 1005 | 4 |
| CON1 | HRS ZX62R-B-5P | 1 | |
| CON2 | Norcomp 111-024-113L001 | 1 | |
| CON3 | JST ZH B4B-ZR | 1 | |
| IC1 | EFM8UB20F32G-A-QFN32 or C8051F387-GM | QFN32 | 1 |
| IC2 | SN75160BDWR or SN75ALS160DWR | SO20 | 1 |
| IC3 | SN75162BDWR or SN75ALS162DWR | SO24 | 1 |
| LED1 | Red | 1608 | 1 |
| LED2 | Orange | 1608 | 1 |
| LED3 | Green | 1608 | 1 |
| LED4 | Blue | 1608 | 1 |
| R1, R2, R3, R4 | 470 | 1005 | 4 |
| R5 | 1K | 1005 | 1 |
The official binary is published in github release. To build the firmware by yourself, install sdcc (testing with ver 3.3.0 #8604), and just "make" at "firmware" directory of the downloaded code. The generated firmware name is gpib-usbcdc.hex. The firmware code is published under New BSD License.
Connect a GPIB-USBCDC board and a PC via USB debug adapter (UDA) or compatible one. The minimum required programming connections are summarized in the following table. Then, use Flash Programming Utilities. Note: the board may not be recognized by a PC when an UDA is connected via USB hubs. UDA is recommended to connect a PC directly.
| Signal | UDA side | GPIB-USBCDC board side |
|---|---|---|
| C2D | 4th pin | CON3 3rd pin |
| C2CK | 7th pin | CON3 4th pin |
| GND | 3rd pin | CON3 1st pin |
- The project owner's website is Fenrir's BLog.