chaoticmachinery

Excellent! What power source are you using? I wonder how many mAh the LED uses and how that would affect battery life. 3 AA batteries. As to battery life, I guess I will have to hook it up for a day and see how long it lasts. I shot for the blinking LED as I was thinking it it should end up using less than a solid LED. But then again since this stuff is all new for me, I could be looking at it wrong.

Turns out I had it wired right. Dummy me had some electrical tape covering up the LED on the bluetooth slave. I had solder the resistor to the bluetooth slave and used electrical tape to temporarily cover the resistor. Plus, I thought the LED was closer to the antenna. Go figure. Also I installed the LED. Here is what I did. Please keep in mind I am absolutely a beginner with this stuff. I based my solution on what I did to turn a PC power supply into an electronics test bench power supply. That solution had 5 VDC going to a LED when it was turned on. Radio Shack parts: 1) LED Part # 276-0036 (5VDC) Note: This red LED blinks. 2) 330 Ohm 1/2 watt carbon-film resistor Part # 2711113 Solder the resistor on to the positive side of the LED. Then I connected the resistor to the wire that was going to VCC on Bluetooth slave. Connect the negative side of the LED to the battery ground. For any of the bare wires I put some heat shrink on it. Just keep that in mind as you put it together. Regards, CM

Good day, I wired everything up to the docs posted. If I hook up the batteries (without plugging it into the chrono), should the bluetooth slave light start blinking? I don't see any blinking lights. I did use the Kycon STX-3100-9C jack and I plugged in a 1/8" stereo cable into the jack. Also, I was thinking it might be nice to wire up an LED to show the unit has power (and on). What should I use and where should I wire it into? My guess is it would get wired into the VIN line shown on page 6. Thanks, CM

I vaguely recall reading somewhere that connecting to HC05/06 chipsets with anything but CP2102 based converters is sketchy. Still, make sure you've got your wiring correct (i.e., TXD → RDX, RDX → TDX, etc.) and make sure the COM port you're connecting to in your terminal emulator is the COM port assigned to the USB converter. If that's all correct, try using a different terminal emulator. I tried several and at least one of them balked with the BT2S no matter how I configured it. Also, make sure the BT2S is in seek mode while configuring it - i.e., make sure it is not paired while trying to change the configuration. If none of that works, try a CP2102 based converter. If you're patient, you can get one on ebay from the pacific rim for less than $2. If you want it sooner, you can get one for ~ $5 from a US seller. Post your findings. It may help some other folks out. I appreciate the suggestions. The CP2102 I ordered from Hong Kong finally came in the mail yesterday and I was able to get it to work.

Hello, I've been trying get past the first step of configuring my BT2S. Unfortunately, all I have access to right now is a PL2303HX USB to Serial adapter. I've wired it up to the BT2S slave and tried that 'AT' command. I get absolutely nothing back. I tried switching the TX & RX around. Still nothing. I have the serial set to 9600 8N1. BTW I know the cable works. I used it to fix a Foscam issue the day before. Thoughts? Thanks, CM