DSD TECH SH-B23A Bluetooth 2.0 to RS232 Serial Adapter with DB9 Converter

Had some problems with this as a cheap solution to connect on to Celestron (SLT mount) but it did work out great.A few things to note assuming you already know how to control your scope via a wired USB virtual serial port.(This unit connects to the bottom on the handset same as your wired serial connector).I powered this from a small 5v power bank and connected it as above but at first I could get no response from it. In order to troubleshoot I connected it in UART mode - connecting to direct to PC via USB virtual serial port but could not get it to acknowledge an 'ok' on software command and ask the supplier tech service for help (no reply, waste of time).I discovered that unless connections are dead tight it would not work- that sorted reconnected again and noticed the blinking led paused on trying to connect to scope. Had to reverse RX and TX wires (the only other one is GND, going to the handset) and got various messages about 'semifore time out' and 'no serial port' and 'no celestron scope detected'. Days later found that either unplugging the 5v power to the device ( it goes into sleep mode) or simply delete the com port in Windows (device manager > Bluetooth serial port> uninstall and then right click and reinstall which takes only a minute) - all errors go away and you have the pleasure of using your phone/tablet/laptop to control the scope.A few times I needed to briefly unplug the 5v supply to it when I see the led does not go steady(i.e not connecting) but no problem as it will reconnect on next attempt and you don't lose alignment.Hope this saved someone a lot of heartache!

V/GOOD

I needed this item to communicate with an ECU wirelessly. The ECU uses a different baud rate so I needed to use the DSD tools software to change it. The instructions are vague & I am no expert. Anyway, the case has to be opened to get access to the push button on the PCB & the jumper . Once connected to your pc via serial cable & powered up, launch the DSD software & then press the button on the board to allow the AT codes to be sent. Use hc05 as that is what the board appears to be not hc06.Finally, the jumper position has to be changed to allow it to communicate via Bluetooth.UpdateOrdered a second item & it isn't the same as the previous one. The previous was an hc05 with a button on the board, this one is an hc06 without a button. Just plug in as is, to reprogram the baud rate using the hc06 tab on the software. Then change the jumper position as before to allow it to communicate with the device.

Works fine !