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Messages - marcwolf

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1
Support / Re: Simblee Questions
« on: August 29, 2016, 04:55:23 PM »
Many thanks Tolson. That was a big help.

Can I find out what Grounds do need to be connected?

At the moment I'd prefer to use a small lipo as it can be recharged rather than be replaced.  If I encapsulate the whole device in soft silicone then I can push 2 pins in to recharge. But I will need a 3.3v regulator.

Atleast I can route tracks around the antenna area :)

Many thanks
Dave

2
Support / Simblee Questions
« on: August 29, 2016, 04:21:31 PM »
Hi.
I have sent several emails to the Simblee team but have had no replies, and I am currently laying out a board for a Simblee.

These are my questions if anyone can help.

1.   There are many grounds on the module. Do they all need to be connected or are they connected internally.
2.   Does the antenna need a copper area or can it be left blank for additional traces.
3.   Likewise with the 4 pads under the module.. Do they need to the connected to ground.
4.   To save space and components can I run this directly from a 3.7V LiPo.

Many thanks for any suggestions.
Dave

3
Support / Simblee Documentation Issues - Missing GPIO's
« on: August 20, 2016, 03:48:41 AM »
Hi Folks.
I decided to make a Diptrace library for the Simblee module and I found that GPIO 26 and 27 are not listed in the documentation. They go from 25 and then to 27.

I am not sure if this will effect any programming where you are using the higher I.O pins.

Just a head up.

Oh - if you want the Diptrace Library I will be putting it up pretty soon. Just confirming ALL of the measurements of the Pads etc.

Dave

4
Support / Re: Simblee Multiple PinWake Limitations
« on: August 18, 2016, 04:33:22 PM »
Hi Folks.
I am starting to play with the Simblee and it looks to be a very interesting product.

I was wondering on the pinWake functionality where you can set a pin to wake the processor. Is there any limit to the number of wake keys you can assign. I have a project where I will have 17 input lines, and all of them could be used to wait the unit, get it to perform some function depending on the pin, and then drop back to low power sleep agaun.

Yes I am away of the all of the coding loops and resetting the pins.

Many thanks
Dave

5
Hi Folks.
I have been working for some time to find away that someone can control things without using their hands. Currently there are several tongue interfaces available but all of them are using HALL or other magnetic sensors, and rely on the wearer using a magnet attached to their tongue somehow.
To get the form I took an alginate impression of my upper mouth and cast it in plaster. However your local dentist will do that for about $70. Once you have the impression you can use any thermo plastic to create the shape and test it with some denture glue for fitting.

I wanted to try a different way and found some very nice switches from Panasonic (EVQ-Q2B01W series) that have an very light touch to activate plus it has a excellent tactile 'click' feel. Also for the joystick I found that if I take it apart I can remove one of the contact plates (it has 2) and make it likewise easy to move with the tongue (https://www.sparkfun.com/products/10063)

Using an 74HC4067 SMD I can have a maximum of 16 switches (11 around the edge and 5 for the joystick) Of course it is up to the user's end requirement how many of the lines are used. One side of the switches are pulled LOW to ground and the other goes to an input line of the 74HC4067. The output of the 74HC4067 is pulled HIGH.  Likewise any of the switches can be replaces with something like a Force Sensitive Resistor  (https://www.sparkfun.com/products/9673) which can detect a range of pressure changes.

At this point one can use either a DFRobot Beetle, or a RFDuino as the embedded controller. Both will fit easily  in the interface.

The 4 GPIO pins (RFDuino) or pins 15 to 18 on the DFRobot Beetle (you will have to make one of the Analogs an Digital Output)  control the 74HC4067. If you can spare an additioal line then you can control the Enable too. or just pull that to LOW.

Then you can count in binary 0 to 15 through those outputs and read the input to see if it is below 250. If it is then we have a pushed button and can act accordingly.

The rest is essentially up to the application and the user.  For myself I will be controlling animatronics inside a costume and not require any additional helpers. For the handicapped it can control wheelchairs etc. For the engineer it can act as a pseudo keyboard changing a HUD to display information whilst they are working with their hands.

This is a picture of my finished module without the  controller attached yet. Once attached one can power/communicate either with a cable. Or use the Bluetooth function and a lipo battery suitably insulated and sitting in the cheek.

All surfaces are coated with a silicone 'wash' to give a thin insulating layer.

Enjoy.
Marcwolf






6
Getting Started / Re: Input and output of the RFduino
« on: December 23, 2014, 06:07:06 PM »
Although 2 of the GPIO re needed to load the program so that really means only 5.

7
Suggestions / Re: Iphone terminal application
« on: December 10, 2014, 09:47:40 PM »
SENA BTerm Bluetooth Terminal

I have found this

8
Getting Started / Re: RFDuino to Arduino comminication
« on: December 07, 2014, 05:06:03 AM »
Hi Isnyman
Thanks for the explanation but I am a little more tech than that.
Ok..  Problem.

I have a RFDuino connected so a group of sensors. I want to transmit the data from the sensors to a Arduino nearby. Having not played around with Bluetooth before.. and previously having issues with I2C when needing to mix Master/Slave configurations I am trying to work out the best and cheapest solution.

The RFDuino was chosen for its SIZE only.. Nothing more. It will actually have to sit in the roof of a mouth when working, and so be battery powered and independant of external wiring (yes it will be protected by silicon - and this is not the first semi-implanted device I have made).

Ok.. Lets list the questions.

1. Will any Bluetooth unit connected to an Arduino work as a receiver or will only a Bluetooth LE work.
2. Is the GZLL specific to the RFDuino, or is it a standard protocol across BLE.
3. In setting up the protocol between the Transmitter and Reciever are there any examples I can look at.

Hopefully this will clear up some of the misunderstanding.  I can delve into the project more but it is not important in this instance. The capability to transmit is.
Many thanks
Dave

9
Getting Started / Re: RFDuino to Arduino comminication
« on: December 05, 2014, 08:23:35 PM »
Yes.

I want to crate a serial link between a RFDino and an Arduino.  Whats I am not sure about is what is the best module to connect to an Arduino. I know that the RFDuino is a BLE unit and that it will not communicate to a normal bluetoth. Or have I got this wrong.

Bluetooth is a new area for me re micro controllers.

10
Getting Started / RFDuino to Arduino comminication
« on: December 04, 2014, 08:12:29 PM »
Hi.
I've been searching the from but with little luck as there is a lot on programming the RFDuino with a Arduino. But I cannot find much about using an Arduino to receive data from a RFDuino.

The RFDuino will be sending the data as a string of 20 characters.

Can anyone advice the best way to do this. 

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