Search found 149 matches

by jmlynesjr
Mon Jan 30, 2017 7:08 pm
Forum: Tips, Tricks & Hints
Topic: STEMTera
Replies: 2
Views: 433

Re: STEMTera

Matt:

Maybe try a smaller chip hammer! :D

James
by jmlynesjr
Fri Jan 27, 2017 5:20 pm
Forum: Tips, Tricks & Hints
Topic: STEMTera
Replies: 2
Views: 433

STEMTera

Good morning:

Have you seen today's Sparkfun announcement of pre-orders being taken for the STEMTera($45)?

It's a prototyping board with a built in Arduino! What a great idea! Too bad it doesn't host a chipKIT...

James
by jmlynesjr
Thu Oct 20, 2016 7:42 pm
Forum: chipKIT Boards
Topic: chipKIT WifFire external ADC referance
Replies: 3
Views: 583

Re: chipKIT WifFire external ADC referance

Jacob:

Is there a typo in your code example?

0b001 vs 0x001

James
by jmlynesjr
Tue Aug 30, 2016 3:54 pm
Forum: Libraries
Topic: Adafruit I2C Backpack
Replies: 10
Views: 1612

Re: Adafruit I2C Backpack

I thought it looked weird too.

How would you set it up?

James
by jmlynesjr
Mon Aug 29, 2016 7:05 pm
Forum: Libraries
Topic: Adafruit I2C Backpack
Replies: 10
Views: 1612

Re: Adafruit I2C Backpack

Matt: The union/struct looks very useful. I admit I had to look it up in a C++ tutorial doc that I have. Also a comment on Stack Overflow indicated that the construct is often used in embedded systems for breaking out groups of bits within words. Next question: The Adafruit LCD library #include(s) t...
by jmlynesjr
Fri Aug 26, 2016 4:43 pm
Forum: Libraries
Topic: Adafruit I2C Backpack
Replies: 10
Views: 1612

Re: Adafruit I2C Backpack

Matt: You hit the nail on the head. 8-bit port expander, 4-bit interface, and a few commands. I have about about accumulated enough examples to put something together. I found a copy of LiquidCrystal_I2C and it appears to be a stripped down version of the "standard" LCD library, but is set up for a ...
by jmlynesjr
Thu Aug 25, 2016 8:07 pm
Forum: Libraries
Topic: Adafruit I2C Backpack
Replies: 10
Views: 1612

Re: Adafruit I2C Backpack

Update2: "There are no five minute jobs..." (It's a long story) The Sparkfun I2C backpack uses an Atmel chip and thus hides the bit twiddling from the user. The Adafruit I2C backpack uses an I2C port expander chip which leaves all of the bit twiddling to the user. Read Microchip's AN587, "Interfacin...
by jmlynesjr
Mon Aug 22, 2016 2:29 am
Forum: Libraries
Topic: Adafruit I2C Backpack
Replies: 10
Views: 1612

Re: Adafruit I2C Backpack

Update: Thanks Matt. I reviewed the Adafruit LCD library, Adafruit MCP23008 library, and the MCP23008 data sheet in gory detail. Looks like I will be able to add MCP23008 initialization code to I2C code I have previously used with a Sparkfun I2C Backpack. I only need byte wide writes and can delete ...
by jmlynesjr
Sat Aug 20, 2016 3:26 am
Forum: Libraries
Topic: Adafruit I2C Backpack
Replies: 10
Views: 1612

Adafruit I2C Backpack

Hello all:

I purchased an Adafruit I2C Backpack(Product ID 292) and the 4 x 20 Character LCD.

Is this combination supported by the LiquidCrystal library under UECIDE? Any documentation/example code available?

Thanks,
James
by jmlynesjr
Thu Jan 28, 2016 5:26 pm
Forum: chipKIT Boards
Topic: Very New to Arduino. Need Advice on the Max32
Replies: 7
Views: 990

Re: Very New to Arduino. Need Advice on the Max32

Hi In addition to the other great advice... The way I work, I'd do a small test program for each separate device that I need to control/monitor so that I could understand how each device works(what outputs are required and what input data is returned) and then I would start integrating them together...