The Shop > Electronics & IC Programing

TouchDRO with HF Calipers

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Chuck in E. TN:
John, I've been through that page several times. No help. I have a terminal program on my PC that connects to the Arduino BT module every time. In fact, I've been running it all day off and on. The Arduino sits here on my desk powered up, BT module blinking away...
Best I can get from the Android is an app I downloaded to fix the Bluetooth function works one time. The Android will connect, and before I can calibrate the scale it drops the connection and won't re-connect until I 'repair' the BT again. It just won't stay repaired.
In fact, I have a terminal app on the Android that will connect to the Arduino BT module, after 'repair', and it's connected now and displaying the caliper data. If I shut it off and start it again, it will not connect until I repair the BT again...Sooooo frustrating.

Chuck

Chuck in E. TN:
John and Brass_Machine,
I've soldered wires to the caliper data/voltage pins, and am using a sketch I found at

https://sites.google.com/site/marthalprojects/home/arduino/arduino-reads-digital-caliper

I'm using the calipers battery for now, but plan to build a voltage regulator to replace it soon.
I had to build a logic level shifter using 10k ohm resistors and 2N2222a transistors to get the Arduino to read the caliper. I modified the sketch to send a 0 for the Y and Z axis because I'm only using one caliper at the moment.
I thing the problem I'm having is entirely on the android. It's a cheap Aosd Q88D. Hence, mu original post asking what brand Android folks are using.

Chuck

John Rudd:
The Android I'm using is Lenovo and I bought it Nov 2015 brand new unused from a high street retailer...so its a genuine device....

For bt dropout, half way down this page, there is ome useful info.....

http://www.yuriystoys.com/2013/07/troubleshooting-common-dro-connection.html

DavidA:
Maybe I'm a bit of a Luddite, But isn't the whole idea of radio linking to an active machine just an accident waiting to happen ?

Surely much safer (and apparently easier) to hard wire such things.

I can imagine the tool post closing in on the chuck .  And the link fails......

Dave.

DavidA:
Ignore the above,

Just realised that the aim is to only connect the DRO via wireless,  not axis drives.

Thought it best to leave the post there rather than just delete it.

Dave. :doh:

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