DIY Electronics (Hong Kong) Message Board

K145 comunacation good but only 85.00 output in each chanel.

jpawlson — Tue, 17 Nov 2009 12:55:52 GMT

I am only getting a reading of 85.00 from the temperature logger regardless of the application of heat or cold to the DS1820's?

I assembled the board and two ds1820 as per the instructions. I can establish communications but all I get is 85.00 no matter what channel I use or application of heat???

From log program, K145 with two ds1820 connected:

2009,320,07,43,14,85.00,,,

2009,320,07,43,30,85.00,,85.00,

2009,320,07,44,00,85.00,,85.00,

2009,320,07,44,30,85.00,,85.00,

2009,320,07,45,00,85.00,,85.00,

2009,320,07,45,30,85.00,,85.00,

2009,320,07,46,00,85.00,,85.00,

2009,320,07,46,30,85.00,,85.00,

2009,320,07,47,00,85.00,,85.00,

Thank you.

James Pawlson

Forum: Messages

Kit173,Kit174 Problem

Jacky — Tue, 10 Nov 2009 13:37:54 GMT

I bought kit173,kit174 before few day, my tutor and i check the solder and the component is no error and correct.

I connect this two kits with PC using hyperterminal, but the "Sending" LED light no flashing at all the time.
1. (hyperterminal was set the baudrate to 9600,8 bit data,no parity and 1 stop bit.)
2. (DIP on kit 173, 1,2 - ON, 3 - ON (ASCII mode), 4 - Off (Local echo on))

I have a question about the IC's were programmed or not?

Forum: Messages

k123 programming problem

Jarl — Wed, 04 Nov 2009 16:57:27 GMT

As a couple of others here, I get Error at address 0000h when trying to program the 2051. I'm using the triad version of the Keil C development suit and it generates the attached hex file.
I can b,c,r the chip, and it automatically detects the processor as a 2051.
I have verified that the resistor ladder is indeed placed correctly and that vpp is 12 v, so what can the problem be? anyone like to help, please :-)
Thanks in advance

Forum: Messages

Hello

bizantino — Mon, 02 Nov 2009 02:49:50 GMT

Sorry I forgot to say hello or introduce myself
to the forum; I am new in this PIC topic and having some difficulties with my K128 programmer.

Hope somebody replies providing some help.

Regards...

Forum: PIC Programmer kits

Mismatch between firmare chip and Micropro

bizantino — Mon, 02 Nov 2009 02:45:32 GMT

I bought a kit 128 fully assembled two years ago; never use it.
                            yesterday a tried to do the setup and is showing a mismatch as follows: firmware is P018 and Micropro is P18A.

    The programmer seems to operate fine, it does the RESET and perform as the instructions explains, with no PIC in the socket, select PIC16F84, press READ. will display all zeros.

    The instruction that comes with the unit says that "the firmware chip supplied with this kit will run with MicroPro.exe from diypack25.zip; but whatever installed is:
Microbrn, not Micropro.exe.
   Have been reading the forum topics related to similar problems and can say this,
         -Windows driver downloaded from FTDI is working fine, PC is
           recognizing the k128.

    Please define the Diypack version to download with my firmware chip.

Any hint to solve this ?
Thanks in advance.

Forum: PIC Programmer kits

diyk74.exe auto-start

samdaman — Tue, 13 Oct 2009 22:53:05 GMT

I can add a shortcut to diyk74.exe to my startup folder, but how do I get it to start with the 'Activate' button turned on?

I can't really do an un-attended recovery from a power failure unless I can do this...

Thanks!

Forum: Messages

K166 Modification - Pushbutton Operation and Jam Detection

up2spec — Mon, 12 Oct 2009 01:44:49 GMT

I am after a bi-directional controller similar to this but in my application the motor is pushing a very light load to either end of a track when a button is pushed (one-shot). When the load reaches either end of the track and is jammed (stops rotation) the motor should stop or cutout until the button is pushed again.

So instead of using a trimpot to vary the speed and direction I would like to modify it to have a single push button. I figure the button would trigger a monostable that would be held high until it is reset by some kind of jam detector. Then to alter the direction after each button push, some kind of flip-flop circuit. This would all feed into IC1:A pin 3.

I think I can work that logic out, however the bit I need help with is how to detect that the motor has jammed.

I figure the jam detector would monitor the voltage across a low impedance (0.1 ohm?) resistor in series with the motor load. This would give an indication of the current being drawn by the motor. So I need a way to detect this condition is persisting for 1 or 2 seconds (so that it doesn't trigger from the inrush current when the motor starts) and then trigger a reset pulse back to the monostable at the input.

Is there a better way to do this? Or are there any other kits that would get me closer to this?

Forum: Messages

K166 - Purpose of Q1/Q2 (BC547) Transistors

up2spec — Mon, 12 Oct 2009 01:43:51 GMT

In regards to this kit, what is the purpose of the Q1/Q2 (BC547) Transistors?

Forum: Messages

K155

tjolle62 — Wed, 07 Oct 2009 21:44:29 GMT

Hi,
I know it's been a too long day of work to end with little soldering projects ,
but i just got the K155 tone control kit and pretty much got it all together
been looking several times on schematic which say that C2 (C11) is wrong
on pcb mark but i just can't see what it is wrong !
as you know i have both C2 and C11 on board and so far i can see the
footprint is right on this board.
C2 have + to the left and C11 to the right if looking down to board,
Am i completly lost or ?

Best Regards,
Kjell.

Forum: Messages

DIYPack 26

tarts — Mon, 05 Oct 2009 19:13:32 GMT

I had these files in my computer and I taught that I might upload them for others to access. I haven't compared it to ver.25 so I don't know the differences but there sure are some.

You can download diypack26 here:

http://www.eava.ee/~tarmogreenb/DiyPack/DiyPack26/

---I have also fixed some bugs that were discussed in this forum.

Bugs fixed in these chips:

18F1220

18F1320

18F2220

18F2221

18F2320

18F2321

18F2331

18F2431

18F4220

18F4221

18F4320

18F4321

18F4331

18F4431

Have a look in this thread: http://diykit.websitetoolbox.com/post?id=2372670

---On board programming added to 18F1320, 18F1220. Have a look in this thread: http://diykit.websitetoolbox.com/post?id=1877725

Here is a Chipinfo file from diypack26b2 that I updated: http://www.eava.ee/~tarmogreenb/DiyPack/CHIPINFO.cid

EDIT: And here is complete installation with updated chipinfo for easier storage purposes : http://www.eava.ee/~tarmogreenb/DiyPack/diypack26_updated.msi

If someone has also fixed some bugs or added chips, then let me know, I'll add them in one chipinfo or .msi file.

Forum: PIC Programmer kits

Can I add 16f785

tarts — Mon, 05 Oct 2009 14:22:18 GMT

This is basically the same chip as 16f677 which is supported(at least in ICSP mode)

All the pins are the same just Op-Amplifier function is added for some pins.

Can I just program it with 16f677 selected?

Forum: PIC Programmer kits

k150 ver2 16f73 16f77 overheating

MarcPrice — Fri, 02 Oct 2009 17:10:35 GMT

I have a k150 ver2 it seems to program the 16f84a no problem at all
but when i put a 16f73 or 77 in the zif the pic heats up and the
regulators too i was wondering if someone might know whats wrong there was a point where it
wouldnt program any chips and i replaced one of the transistors with i
think a bc308 pnp transistor that i had in a box and it started programming again but
something else is wrong.

i am using a 18v 1A powersupply hopefully this is right?

Forum: PIC Programmer kits

electronic appuratus

Callumbrad128 — Wed, 30 Sep 2009 13:57:25 GMT

Is there such a part that when it hears a particual sound, that it only recognises this sound.

let me explain...

I am trying to conduct an experiment, and have limited knowledge in this field! Basically my project is to make something, so when a blender is turned on 'my project' hears this sound, and a light comes on (prefer a light, but it could be anything which indicates the noise has been heard). To make things harder for me, is this possible for the light to come on when only a particular noise is heard! If this is possible, could someone explain the theory behind this and the type of apparatus need to make this!

I hope this doesn't come across as if it were "a homework project"! I am infact 22 and just an experiment I want to carry out for my own pleasure! (hopefully everyone can see, that by my lack of knowledge it would def not be anything to do with a homework)

Any help would be muckly appriaciated

Forum: Messages

K108 voltmeter posible?

vtol — Thur, 24 Sep 2009 06:58:21 GMT

Hi,
I'm kinda new to these KITs and just bought the K108 thinking it could be a PC voltmeter +OUTrelays.

But after messing with it and RE-reading its docs it looks like it can only read like YES and NO's rather than get the actual voltage being introduced to a certain input letting me convert the HEX to voltage.

I have seen a bit about comparators and PIC boards with google searching.

Then, I was wondering if the K108 resistors in 1 input could be changed so I could determine if one INPUT had 1 volt more than another, since thats all I need to GET is 1 volt difference of 2 reads.

I also dont know if I can introduce over 24 volts to the K108 to get the result difference, unless theres a way of doing it with less than 24 VDC input.

I will write the software to activate /write the ENABLE/DISABLE of the output relays when needed, so thats not a problem.

I have another device that will get up to 1000 VDC input to log file, but I was hoping the K108 could do it all, hehe.

Do you think it could somehow?

Thanks for reading and appreciate any clues /tips or answers.

Forum: Messages

Question about the CK1711 PIC programmer

gte — Tue, 22 Sep 2009 23:42:58 GMT

I was considering trying to build an RCD programmer ( http://feng3.cool.ne.jp/en/rcd.html )and stumbled upon this one

Has anyone used one of these? I was thinking about buying this one
http://electronickits.com/kit/complete/prog/ck1711.htm
to use with the PIC18F452.

I guess I'm just looking for opinions on how to start writing to this chip using C? And the easiest way to start experimenting with this, so that I can concentrate on getting my code working, and not building/troubleshooting the programmer or programming software.

Thanks!

Forum: PIC Programmer kits