Difference between revisions of "User talk:Mrnuke"
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File:Bm857_cable_homebrew_board.jpg|<small>The IR diode and phototransistor are prominent on the board</small> | File:Bm857_cable_homebrew_board.jpg|<small>The IR diode and phototransistor are prominent on the board</small> | ||
File:Bm857_cable_homebrew_interface.jpg|<small>Board being held in place by the rubber holster</small> | File:Bm857_cable_homebrew_interface.jpg|<small>Board being held in place by the rubber holster</small> | ||
</gallery> | |||
== Brymen BC-58Xa interface cable == | |||
This is the official interface cable sold by Brymen. It works with the BM857a and BM859a, but does not work with thw non-a models. | |||
==== Photos ==== | |||
These are from the Extech SW810a kit. The components are all manufactured by Brymen, and carry the Brymen part numbers. | |||
<gallery> | |||
File:Extech_sw810a_kit.jpg|<small>Kit contents (software disc not shown)</small> | |||
File:Extech_sw810a_ir_db9.jpg|<small>BC-58Xa DB9 connector</small> | |||
File:Extech_sw810a_id_dmm_hookup.jpg|<small>BC-58Xa DMM connector</small> | |||
File:Extech_sw810a_usb2serial.jpg|<small>BUA2303 USB-to-serial converter</small> | |||
File:Extech_sw810a_usb2serial_back.jpg|<small>BUA2303 USB-to-serial converter, back</small> | |||
File:Extech_sw810a_usb2serial_bottom.jpg|<small>BUA2303 USB-to-serial converter, bottom</small> | |||
File:Extech_sw810a_IR_opened.jpg|<small>IR side, opened</small> | |||
File:Extech_sw810a_ir_casing.jpg|<small>IR side casing</small> | |||
File:Extech_sw810a_ir_pcb_top.jpg|<small>IR side PCB, top</small> | |||
File:Extech_sw810a_ir_pcb_bottom.jpg|<small>IR side PCB, botoom</small> | |||
File:Extech_sw810a_usb2serial_pcb_top.jpg|<small>BUA2303 PCB, top</small> | |||
File:Extech_sw810a_usb2serial_pcb_bottom.jpg|<small>BUA2303 PCB, bottom</small> | |||
</gallery> | </gallery> | ||
Revision as of 20:16, 8 December 2012
BM857 PC interface cable
I'm trying to build a PC interface cable for my Brymen BM857. I have used Radioshack 276-142 IR diode and photo-transistor set, and a PL2303 USB to serial converter.
If you have a real cable you'd like to donate, hop on to #sigrok and contact me.
Info
This is an experimental homebrew design. It does NOT work. The manufacturer's cable contains a PIC microcontroller that communicates with the PC, and multimeter. The data sent through the serial port is not what the DMM receives/sends. Any straight cable will not work.
It is unclear if the IR protocol is a simple UART, or is pulse-width based, or if it uses any other encoding.
Schematic
Photos
The IR diode and phototransistor are prominent on the board
Board being held in place by the rubber holster
Brymen BC-58Xa interface cable
This is the official interface cable sold by Brymen. It works with the BM857a and BM859a, but does not work with thw non-a models.
Photos
These are from the Extech SW810a kit. The components are all manufactured by Brymen, and carry the Brymen part numbers.
Kit contents (software disc not shown)
BC-58Xa DB9 connector
BC-58Xa DMM connector
BUA2303 USB-to-serial converter
BUA2303 USB-to-serial converter, back
BUA2303 USB-to-serial converter, bottom
IR side, opened
IR side casing
IR side PCB, top
IR side PCB, botoom
BUA2303 PCB, top
BUA2303 PCB, bottom
