Modern Device Forum

mdAndy

@Paul Badger

3-axis accererometer MMA7361

What are the final "units of measurement" of the MMA7361 in the demo program?
I am just a novice.

tiltx = atan2( sqrt((y*y) + (z*z)), x);
tilty = atan2( sqrt((x*x) + (z*z)), y);
tiltz = atan2( sqrt((y*y) + (x*x)), z);

mdAndy

No biggie? All the information, I have seen shows straight headers and I expected straight headers.
I paid for straight headers.

mdAndy

I bought two JeeNode 915 kits V5 and for the qty 4 6 pin female I/O headers they had
right angle connectors. They should be straight. (both kits)
Any reason why?

mdAndy

The MD Sharp ambient light sensor (AMBI) vs the Vishay Temt6000 (Sparkfun)

In searching for the best light sensor for my OpenPicus Flyport Wifi Webserver Garage Door
Controller, I used the Vishay Temt6000 until I found the Modern Device Sharp
ambient light sensor (AMBI). There is no comparison ...

mdAndy

The whole idea of the BBB is to separate the seldom used USB circuitry from the always used microcontroller.

Maybe for your "stand alone" applications. For others, like me, having the PC tied to the BBB constantly via USB BUB suits me fine.
That is why I suggested to have the circuit already ...

mdAndy

New Development Board Suggestion: "USB BUB BBB"

There are many times that having just an BBB board
with USB built in is all a person needs.
The power draw of a 328P idle is 25 ma and the
USB max. current is 100 ma.

On your BBB board do the following:
#1. Remove all power supply options.
#2. Add ...

mdAndy

Would it or could it be possible to find a "clear" heat shrink sleeve to encase the BUB board from shorting out and static electricity?
The end user would just slip the "clear heat shrink" tubing over the BUB after his configuration.

mdAndy

It's really any device that has digital inputs, digital outputs, analog inputs, analog outputs, a comport for communications, memory for program storage and a CPU for processing control instructions. The ATMega168/Arduino/Freeduino fits this description. With the Modbus RTU networking protocol you ...

mdAndy

The functions codes have been reduced to only two (Function codes 3 and 6). This industrial PLC networking protocol will allow multiple Slaves (Arduinos/Freeduinos) to be connected to one Master via RS485. You can also use it "point to point" using RS232. Error checking is provided by a CRC16 data ...

mdAndy

mdAndy wrote:The Atmel AVR ATMeaga168p is a 28 pin device with 16K flash 1K Ram 1/2K EEProm.
The Atmel AVR ATMeaga328p is a 28 pin device with 32K flash 2K Ram 1K EEProm.
How about it?

mdAndy

Paul, it is the second chip I am talking about - The first chip goes on your standard RBBB and is the ATMega168p chip.
The second chip has "double the resources" of your Freeduino chip.

mdAndy

The Atmel AVR ATMeaga128p is a 28 pin device with 16K flash 1K Ram 1/2K EEProm.
The Atmel AVR ATMeaga328p is a 28 pin device with 32K flash 2K Ram 1K EEProm.
How about it?

Modern Device Forum

Search found 12 matches

3-axis accererometer MMA7361

Re: JeeNode 915 kits

JeeNode 915 kits

Sharp (AMBI) vs the Vishay Temt6000 Sparkfun

Re: New Development Board Suggestion: "USB BUB BBB"

New Development Board Suggestion: "USB BUB BBB"

BUB Board Static Protection

Re: Modicon Modbus RTU Slave protocol comes to the Arduino/Freed

Modicon Modbus RTU Slave protocol comes to the Arduino/Freed

Re: RBBB with ATMega328p ?

Re: RBBB with ATMega328p ?

RBBB with ATMega328p ?