Search found 237 matches

by rmteo
Sun Aug 11, 2013 1:40 am
Forum: User Modules
Topic: PIC 10F220/222
Replies: 6
Views: 4877

by rmteo
Thu Dec 15, 2011 5:08 pm
Forum: General
Topic: Smart GLCD from MikroElektronika
Replies: 4
Views: 5241

Is that a RotorWay in your avatar?
by rmteo
Thu Dec 15, 2011 4:30 pm
Forum: General
Topic: Serial backpack for 320x240
Replies: 16
Views: 12312

If you are comparing it to an iPad, then you will be disappointed. However, as a base for developing front ends to embedded systems, it is a great platform. Try pricing just a 7 in. 800x480 TFT LCD with touch screen - I doubt you will find anything for less than $50. As I mentioned in my other post,...
by rmteo
Thu Dec 15, 2011 4:01 pm
Forum: General
Topic: Smart GLCD from MikroElektronika
Replies: 4
Views: 5241

For best daylight use, the black on yellow/green LED, such as the one you are using and the one I linked to, are best.

However, for best overall useability, TFT LCDs are the way to go. Look at this LSA/experimental one for about $6,000.

Image
by rmteo
Thu Dec 15, 2011 3:39 pm
Forum: General
Topic: Smart GLCD from MikroElektronika
Replies: 4
Views: 5241

For best daylight visibility, you want something like this.
http://www.crystalfontz.com/phpthumb/ph ... php?id=534

That said, glass cockpits typically use TFT LCDs. For example, a Garmin G1000 in a King Air.
Image
by rmteo
Thu Dec 15, 2011 3:32 pm
Forum: General
Topic: Serial backpack for 320x240
Replies: 16
Views: 12312

http://www.ebay.com/itm/270853740118?ss ... 1423.l2648

Direct from manufacturer cost is as low as $42/each.
by rmteo
Wed Dec 14, 2011 8:07 pm
Forum: General
Topic: SF like compiler for MIPSMK4 alla PIC32
Replies: 2
Views: 3881

Your best bet would be mikroBasic PRO for PIC32
by rmteo
Wed Dec 14, 2011 6:51 pm
Forum: General
Topic: Serial backpack for 320x240
Replies: 16
Views: 12312

The 240x128 was a custom for a customer. Today I work with TFT exclusively. For small (handheld) applications they are great - and actually cost quite a bit less than GLCDs. http://www.funbidders.com/my_img/TEST-6BF.jpg For larger displays, I use something like this as a front end to the application...
by rmteo
Wed Dec 14, 2011 2:44 pm
Forum: General
Topic: Serial backpack for 320x240
Replies: 16
Views: 12312

I am not recommending that specific GLCD - more like this one http://www.crystalfontz.com/product/CFAG240128D-TMI-TZ My serial backpack does things like different size/font text, icons/sprites, lines, circles, rectangles, bitmap display, etc. This is for the 128x64 but the one for the larger display...
by rmteo
Tue Dec 13, 2011 7:45 pm
Forum: General
Topic: Serial backpack for 320x240
Replies: 16
Views: 12312

As I mentioned above, I did a serial backpack for a 240x128 GLCD (T6963, similar to the one below) some years back. Diagonally, it measures about 5in.

Image
by rmteo
Tue Dec 13, 2011 3:09 pm
Forum: General
Topic: Serial backpack for 320x240
Replies: 16
Views: 12312

Are you thinking of doing a TFT (color) or STN (monochrome) 320x240 display? I have done (commercially) a serial backpack for 128x64 to 240x128 monochrome displays using SF. I would recommend something with more grunt than any PIC18 - especially if your are wanting to go with TFT and touch-panel. He...
by rmteo
Sat Oct 29, 2011 10:32 pm
Forum: Modules
Topic: Timer #1, Interrupt/128X64 KS0108 conflict
Replies: 12
Views: 6929

Use code tags, makes it easier to read. Const T1Period As Word = 65536-50000+6 Const Int_Total As Byte = 40 Dim int_counter,days,secs,mins,hrs As Byte Interrupt RTC() T1ON = 0 T1 = T1 + T1Period T1ON = 1 Dec(int_counter) If int_counter = 0 Then int_counter = Int_Total Inc(secs) If secs = 60 Then sec...
by rmteo
Wed Oct 12, 2011 2:22 pm
Forum: User Modules
Topic: Composite USB device support
Replies: 9
Views: 5507

Are there even any PIC18's that can act as Host?
by rmteo
Mon Apr 25, 2011 3:11 pm
Forum: User Modules
Topic: DC Motor Control
Replies: 4
Views: 4403

Yes, you can control the 1/4HP DC motor with a PIC using PWM - assuming you have a sufficiently beefy out stage. A stepper is not closed loop unless you add an encoder and do the loop control in software - you can also do the same with the DC motor. Why would you need close loop for a cattle gate? I...
by rmteo
Mon Apr 25, 2011 2:18 pm
Forum: User Modules
Topic: DC Motor Control
Replies: 4
Views: 4403

Assuming it is a brushed DC motor, then a half-bridge implemented using the ECCP module of the PIC will drive the motor forward and/or reverse. Instead of ramping the voltage (poor torque at low voltage), use PWM and ramp the duty cycle from 0-100%.