Smart Phone Voltmeter

A very small box with dialog to iPhone or Android with Bluetooth - CR2032 battery- A BL600, Laird Bluetooth Low Power 4.0 module- a 16bits ADC.

A very small box with dialog to iPhone or Android with Bluetooth

- CR2032 battery

- A BL600, Laird Bluetooth Low Power 4.0 module

- a 16bits ADC. no change to 1V or 10V caliber automatic ADG801 Analog Devices

- a reference power for ADC (MCP3426 Microchip)

- hight impedance with TLV271 texas Instruments

On the phone, it will be possible to see either a value or a graphic, but I have yet to determine the bandwidth

15th december 2013

some errors (myself and BL600 firmware)

BUT the I2C ADC doesn't work, low level ACK, 2 solutions : new BL600 firmware or new ADC component

3rd january 2014

new PCB is available

16th january 2014

PCB ok (2 changes to do)

BL600 program work well

iPhone program work well

21th Fevruary 2014

New PCB (version 3)

9th March 2014

All components are validate

The BL600 work well

The iOS application work very well

15th June 2014

- Why the power consumption is 30µA when it should be 5μA ?
- Make a calibration procedure with a reference voltage (only a component) Full verifying the proper operation of the voltmeter can not be completed after the completion of the reference voltage generator.
- Deploy the application on the Apple Store?
- Make the application on Android.