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by fotios
Wed May 25, 2011 10:31 pm
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Re: MX010 - RC5 remote control

Hi soccermad. You have confused me a bit. Now I can perceive that except remote control you also need "local" control thru 7 switches mounted on the pcb of your project. I have developed 3 Flowcharts presented in the pictures, which I will explain you step by step. Instead interrupt, (so a...
by fotios
Thu Jun 30, 2011 11:55 am
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Re: Pic Programming for a pre-amp

Hi Phil
Why encoder for volume control? Are you intend to use those PGA2311 of T.I. (or something similar) for volume control?
Fotios
by fotios
Thu Jun 30, 2011 6:49 pm
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Re: Pic Programming for a pre-amp

Hi Phil So your project is to control a DIY Hi-Fi audio preamplifier. Are you intend to include and remote control (RC5 of Philips is the most commonly used from DIYers) in your program? Also what type of relays have in your mind to use? Common type or Latching type relays? For source select you can...
by fotios
Thu Jun 30, 2011 9:01 pm
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Re: Pic Programming for a pre-amp

Hi Phil I have ready a DIY audio preamplifier managed by a control unit which of the heart is a PIC16F887. Take a look here please: http://www.diyaudio.com/forums/analog-line-level/184455-preamplifier-lineup-fotios-fun.html . And here: http://eal.gr/MICROS.htm The only difference is that i use a mot...
by fotios
Sun Jul 03, 2011 7:16 pm
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Selecting among 8 (or more) inputs using 2 keys and EEPROM

Hello In the current project I have included just 8 inputs, to be compatible with EB004 Led board connected at port D of EB006 multiprogramer. In practice, the number of inputs could be 256 according to the size of an EEPROM location (address) of micro. The EB005 LCD board is connected at port C and...
by fotios
Wed Jul 13, 2011 9:39 am
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Hi-Fi audio preamplifier using Burr-Brown PGA2310

I decided to build this project, firstly to help a member of forum and secondly because it was a good opportunity for me to explore new devices such as rotary encoders and the widely used in audio industry Stereo Volume Control PGA2310 of Burr-Brown. The whole project will be a manually – remotely c...
by fotios
Fri Jul 15, 2011 10:58 am
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Re: Hi-Fi audio preamplifier using Burr-Brown PGA2310

I have good news! Just now I ordered samples: 4 X LME49710 from National Semiconductor, and 1 X PGA2310 + 4 X OPA132 from Texas Instruments. I am an idiot :lol: since I had forgotten that I have accounts at both companies! The other good news is that I found 3 encoders from old, out of order CD and ...
by fotios
Thu Jul 21, 2011 9:20 am
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Re: Hi-Fi audio preamplifier using Burr-Brown PGA2310

In the second part of project, I added in the program code the functions “Input select” and “Balance”. I also did some modifications on the LCD display printing. Some necessary new macros and variables have also been added. As I said in my previous post, I found 3 rotary encoders – equipped with pus...
by fotios
Thu Jul 28, 2011 10:55 am
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Re: V4.5 and Keypad

Hello Steve He means that the PORT interrupt in V4.5 upgrade, is still available for simulation only from RB.4-RB.7 . New devices like P16F887 offer PORT interrupt in all pins of Port B. Probably nmindana works with the new PICs and has the same problem like me. By any way, we know that is just a la...
by fotios
Wed Aug 03, 2011 6:03 am
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Re: Simulator problem after FCv 4.5 upgrade

I must apologize for the possible misunderstanding that I caused. The problem was the inappropriate structure of my program - for micros with small stack depth like the PIC16Fxxx - and not the FlowCode simulator after the upgrade to v4.5 . The FCv4.5 simulator works correctly and better than the pre...
by fotios
Sat Aug 06, 2011 8:15 pm
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Re: Hi-Fi audio preamplifier using Burr-Brown PGA2310

In the third part of build of this project, I had to resolve two issues: 1) The combined operation of Volume and Balance control, and 2) The correct code for the use of Encoder, a thing that proved very difficult on the actual hardware. Rotary encoders are usefull and peculiar devices and their impl...
by fotios
Thu Aug 11, 2011 10:42 am
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Re: Explanation in detail of Port B Interrupts.

Hi Dave May i reply instead Ben? Moreover Ben is my mentor on this issue. The PORT B interrupt (or IOC = Interrupt On Change state according to Microchip) is available from RB.4 - RB.7 regarding your micros P16F876 and 913. In new generation PICs, like P16F887, it is available on all pins of PORT B,...
by fotios
Thu Aug 11, 2011 9:24 pm
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Re: Explanation in detail of Port B Interrupts.

Hi Dave Here are two FlowCode examples for helping you. You can run both on simulator. In the first example "DAVE_INT" i have arranged the program according to Ben's instructions. In the second example "DAVE" you can see a different method that i use many times instead interrupts...
by fotios
Sun Aug 14, 2011 9:40 pm
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Re: Encoder triggered by Port B interrupt

Hi Martin Thanks for the reply Just now i tried your project on EB006 with the ALPS encoder. In general is working as you described. There are some issues due to detents of encoder: 1) The counter increments or decrements by "2" (e.g. 2-4-6-8..... 24-22-20-18....) and that is correct for t...
by fotios
Sun Aug 14, 2011 8:08 pm
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Re: Encoder triggered by Port B interrupt

Hello Martin I was busy 3 days ago with rotary encoders like you. The difference is that i experiment with detent equiped encoders, an ALPS a BOURNS and a Panasonic. As for the rest i also use a P16F88 and instead LCD i use the Led board. Until now, i haven't managed to use the PORT interrupt. Deten...
by fotios
Fri Aug 19, 2011 7:33 am
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Re: Internal osc PIC12F683

Chinese proverb: One picture = 1000 words
In this case Two pictures = 2000 words. So, here two pics of what you have to do.
by fotios
Fri Aug 19, 2011 7:01 am
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Re: Internal osc PIC12F683

Hello MJU Yes, you can use the internal RC module of P12F683 and to have available 2 more pins for I/O. In FlowCode "expert Configuration screen" you must select: Oscillator = Internal RC No Clock . In the same screen you could select: Master Clear Enable = Internal . Thus you could have 6...
by fotios
Sun Aug 21, 2011 7:39 pm
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Re: Run out of outputs

Hi Steve For expanding the outputs of a micro, you could also use HC373 or HC573 (Octal 3-State Non Inverting Transparent Latch) instead LS273. Pinout is the same: LS273 CLK = HC373 LATCH, LS273 RST = HC373 OE. The Latch when enabled, can be used like the CLK input of LS273. Please take a look on th...
by fotios
Wed Aug 24, 2011 11:49 am
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Re: P16F887 PortB internal pull-ups

OUT OF TOPIC

I am so happy to have both of my best friends (and mentors) of this forum, in my thread exclusivelly! :D for Martin and :D for Ben ... seperately.

With big gratitude
Fotis
by fotios
Wed Aug 31, 2011 12:32 pm
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Re: RC5 on a 16F88

Hello Sean & Bernard Just now i came accross the FlowCode new RC5 component, help file. After reading (most carefully this time) the component macros, i made a new program using these macros. I used exactly the same hardware configuration that described in my previous post. The program runs with...
by fotios
Fri Sep 02, 2011 10:30 am
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Re: Hi-Fi audio preamplifier using Burr-Brown PGA2310

Here is an update of program that I did after the launch of the last upgrade v4.5 of FlowCode that includes the new RC5 component . It was a good opportunity to try it on a real multimedia device like this preamplifier . Moreover, this wireless protocol is addressed exclusively for such type devices...
by fotios
Sun Sep 04, 2011 7:23 am
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Re: values?

Hello brandonb That you refer, it remembers me a car engine managed by a modern ECU unit. Please correct me if i am wrong. In modern car engines i know that the acceleration pedal operates a potentiometer (my best friend is car mechanic and i helped him many times :mrgreen: ) which of the output dri...
by fotios
Tue Sep 06, 2011 10:10 pm
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Re: values?

Here is the circuit diagram of project. I hope that will be usefull to you, especially in connections of LCD display.
Thanks for your attention
Fotis
by fotios
Sat Sep 17, 2011 5:54 pm
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Re: values?

What can i say... breathless Martin :shock: That is a MASTER-PIECE OF PROGRAMMING TECHNIC . And a very good lesson to all of us. I have to study deeper this clever code, nice way to disable double Port interrupts. These "string manipulation" calculations are excellent, i have to study them...
by fotios
Mon Dec 12, 2011 11:00 am
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Re: Hi-Fi audio preamplifier using Burr-Brown PGA2310

Hi Martin Thank you so much friend for your kind words. I feel better today, after my coming back to all of you :D I will try - in spite of those economic headaces - to be most frequently near you, indeed this forum is a big consolation for me! As for PCB production at home, have you any good idea o...