Spectral Clock - Propeller Clock

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#151 7800873 08 Mar 2010 15:23

Anonymous Anonymous

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Post #151

7800873 08 Mar 2010 15:23


ISR(TIMER1_CAPT_vect)
{
   TIMER1_OFF;
   TCNT1 = 0;
   g_tick = ICR1 / RESOLUTION;
   g_pos = 0;
   OCR1A = g_tick;
   TIMER1_ON;

Try to give instead


ISR(TIMER1_CAPT_vect)
{

   g_tick = ICR1 / RESOLUTION;
   TCNT1 = 0;
   g_pos = 0;
   OCR1A = g_tick;

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#152 7801133 08 Mar 2010 16:18

Scyzor Scyzor

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Post #152
7801133 08 Mar 2010 16:18

This, unfortunately, did not change anything. I can add that this rift in the circle is not the same all the time. Sometimes it's bigger and sometimes it's smaller. It would appear that its size strictly depends on the rotational speed.
#153 7801215 08 Mar 2010 16:40

Anonymous Anonymous

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Post #153
7801215 08 Mar 2010 16:40

Well, maybe your timer1 resolution is too low due to too high prescaler. You read timer1 then divide by resolution (probably 60) and you already have a small error because you divide completely and this small error after the entire rotation cycle shows up as this gap. If at a lower speed the aperture is smaller, then I am probably right, because with a lower speed timer1 will count more and there is a lot to divide and thus there is a smaller error.
#154 7801284 08 Mar 2010 16:58

Scyzor Scyzor

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Post #154
7801284 08 Mar 2010 16:58

As I wrote earlier, changing the prescaler from 64 to 8 means that nothing is displayed.

RESOLUTION = 240

At slower speeds, the gap is larger, but also to a certain extent. It gets bigger and suddenly the whole circle is displayed, but when I keep slowing down the speed, the slit arises again and again over and over again. It is similar on the other side, we accelerate the rotation, the slit becomes smaller, then there is a whole circle and again the slit.

Unfortunately, I do not have much influence on the speed of the motor, and I do slow down or accelerate mechanically.

I would also like to add that sometimes this crack appears and disappears a few (a dozen) times per second, which gives the effect that the whole image jumps.
#155 7810062 10 Mar 2010 16:12

R_On_! R_On_!

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Post #155
7810062 10 Mar 2010 16:12

To the creator: This disk motor of yours had 3 or 4 pins?
I have a disk with 4 outputs, did you leave one pin coming from the disk in the "air"?
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#156 7813790 11 Mar 2010 12:21

Scyzor Scyzor

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Post #156
7813790 11 Mar 2010 12:21

R_On_! wrote:
I have a disk with 4 outputs, did you leave one pin coming from the disk in the "air"?

It is true that I am not the author of the project, but maybe a colleague will help this information.

For me, the drive also has 4 pins and I left them unconnected, but nothing prevents you from connecting the 4th motor output to the MOT0 (17) terminals in the TDA5140 system. If the 4th output is connected, then the 10k resistors should be removed.
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#157 7822968 13 Mar 2010 13:44

R_On_! R_On_!

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Post #157
7822968 13 Mar 2010 13:44

In fact, I am trying to design a driver for such a motor (BLDC) with speed control on MOSFET transistors. I dug to the specification of this engine (NIDEC) 4 pin is marked as COMMON and I connected it to the ground, otherwise the engine does not spin. now I'm trying to write the correct prock batch. So far, the revolutions of this motor are smooth, but not very fast, about 15 rpm. (ATMEGA 16 + 3 x 2 IRF840)
#158 7972588 17 Apr 2010 18:23

Engel-88888 Engel-88888

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Post #158
7972588 17 Apr 2010 18:23

how to set time and date
#159 7978890 19 Apr 2010 13:14

Scyzor Scyzor

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Post #159
7978890 19 Apr 2010 13:14

It was on the front page of the topic.

mb1988 wrote:

The time is set by software. It looks like:
1) I upload a program in which the time is set, for example, to 12:00
2) I turn on the watch at 12:00
3) including, I upload a new program that does not set the time anymore.
#160 7985488 20 Apr 2010 23:55

cristy88 cristy88

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Post #160
7985488 20 Apr 2010 23:55

Hi,

Can you please tell me what program must i use to open the DDB files in the first post? (BLCD Driver.ddb, PropClock_v2.Ddb )

Thanks!
#161 7985863 21 Apr 2010 08:37

Engel-88888 Engel-88888

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Post #161
7985863 21 Apr 2010 08:37

opens these projects "Altium Designer Summer 09" or "Protel DXP2004"
#162 8136265 31 May 2010 03:10

calves calves

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Post #162
8136265 31 May 2010 03:10

Hi!
I'm brazilian and can't understand polish. Someone can send me the schematic in english.
#163 8138226 31 May 2010 17:47

meodenxiii88 meodenxiii88

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Post #163
8138226 31 May 2010 17:47

Can you tell me what program must i use to convert "YOUTUBE"?
#164 8227192 24 Jun 2010 18:00

komar54 komar54

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Post #164
8227192 24 Jun 2010 18:00

I have this question, maybe a bit different. Can this TDA5140A chip control engine speed from hdd?
#165 8362048 03 Aug 2010 21:27

matys4877 matys4877

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Post #165
8362048 03 Aug 2010 21:27

I was looking for a TDA5140 in tme but they apparently don't sell it anymore. Does anyone know any replacement available at tme?
#166 8367898 05 Aug 2010 15:49

Scyzor Scyzor

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Post #166
8367898 05 Aug 2010 15:49

It can be tough with a replacement, but here they have it: Link only the price is high.
#167 8761129 18 Nov 2010 21:54

krion krion

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Post #167
8761129 18 Nov 2010 21:54

Hello,

I need help, I can not install the program (protel99) to open the files provided by the developer why I think there is incompatibility as I am using windows 7 then someone can give me this file in the eagle I can help you solve this problem.

thanks
#168 8764143 19 Nov 2010 19:19

mateo238 mateo238

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Post #168
8764143 19 Nov 2010 19:19

What is the task of the MBI5170 chip ?? Is it possible to make a spectral clock without the use of a shift register, such as chip MBI5170 ??
#169 8765520 19 Nov 2010 23:53

BaLYoZz BaLYoZz

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Post #169
8765520 19 Nov 2010 23:53

problem but a little old! Can I get a bill of materials if possible please
#170 8771324 21 Nov 2010 14:30

djmalder djmalder

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Post #170
8771324 21 Nov 2010 14:30

Dobriy den. Ya z Ukrainy. Zrobiv godynnyk yak tut napysano, ale koly zapuskayu, to atmega zaproshue tilky odin raz dani v DS1307. Godinnik pracyue ale chas ne ide. Moje ya ne virno postaviv fuze v atmega? Dopomojit:!:
#171 8915675 26 Dec 2010 18:29

krion krion

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Post #171
8915675 26 Dec 2010 18:29

I have a problem, someone can explain to me that MBI5170 serves every equivalent component, does anyone know how much?
#172 8915902 26 Dec 2010 19:21

norbis15 norbis15

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Post #172
8915902 26 Dec 2010 19:21

djmalder try to write your post in english though, maybe we can help.
djmalder try to write your post in english, meybe we can help.
#173 8928602 29 Dec 2010 12:46

yetihehe yetihehe

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Post #173
8928602 29 Dec 2010 12:46

MBI5170 is a diode driver, it allows you to control the current diodes. Thanks to this, you do not need to provide resistors for each diode.
#174 8971348 07 Jan 2011 13:54

ananthmax ananthmax

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Post #174
8971348 07 Jan 2011 13:54

Hi

Your project is incredible!
I have experience in only PIC MCU. Do you have schematic and source code for PIC based propeller clock.

Thanks in advance
Ananth
#175 8995446 12 Jan 2011 15:54

mateuszrjzr mateuszrjzr

Level 17

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Post #175
8995446 12 Jan 2011 15:54

Hello
please do not be angry with me, but why are there two hex files, and how should I open pcb? I have an eagle if that helps
#176 9007183 14 Jan 2011 22:59

norbis15 norbis15

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Post #176
9007183 14 Jan 2011 22:59

Try Protel99
#177 9015023 16 Jan 2011 18:25

Moyshaa Moyshaa

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Post #177
9015023 16 Jan 2011 18:25

I have a question for the author. I hope he remembers and keeps checking back .

It uses 2 voltages to power the engine from HDD. V_LOGIC which stabilizes at 5V and V_MOT which it is not known what it is. My question: what is the voltage?
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#178 9031007 20 Jan 2011 09:34

mlassota mlassota

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Post #178
9031007 20 Jan 2011 09:34

V_MOT must be selected experimentally - its change causes the engine revs to change - they have to be selected in such a way that: revolutions are large enough for the image to be stable and at the same time low enough to make the noise bearable.
Regards
#179 9075908 29 Jan 2011 21:51

Moyshaa Moyshaa

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Post #179
9075908 29 Jan 2011 21:51

Thanks for the hint. I made a driver for such an engine and connected it to it.

I still have a request. If that's not a problem, give me a hint. These are my symptoms:

The speed it gets is 3Hz and it is quite unstable (it happens that the motor jerks). And for him to start filming, I have to help him. (Set in motion by hand.)
I supply the engine and TDA with 5V.
I have capacitors like from the datasheet, except for CAP-CD and CAP-DC (I have 22nF).

The same motor with electronics from the hard drive is spinning like crazy.

What do you think? Experiment with power?
#180 9079641 30 Jan 2011 19:29

mlassota mlassota

Level 18

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Post #180
9079641 30 Jan 2011 19:29

Don't do anything with the power supply!
Most likely you have a badly connected motor. Does the motor have 4 tips?
If so, use an ohmmeter to check the resistance between the ends of the end with the lowest resistance, leave it unconnected - this is the center of the star. There will be 3 ends with a resistance of about 2 ? to each other. Is the TDA not warming up?
Does the power supply have sufficient current capacity - up to 1A at startup
Option 2 something wrongly connected in the controller - check the places where the capacitors are connected.
Option 3 kicked TDA
I already have a few drivers on this TDA and they run on about 5-6V each getting about 50-60 rpm
Regards
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Topic summary

The discussion revolves around the design and implementation of a spectral clock using a propeller mechanism. The project utilizes an ATMEGA32 microcontroller to control 32 blue SMD LEDs via MBI5170 LED drivers, with timekeeping managed by a DS1307 RTC. Participants share insights on motor control, programming in C, and the challenges of achieving precise synchronization for the display. Various users inquire about the specifics of the circuit, including the use of different LED drivers, the programming process, and the durability of components. Suggestions for improvements, such as using a coreless transformer for power and implementing IR communication for time setting, are also discussed. The community expresses interest in obtaining schematics, PCB layouts, and a bill of materials for the project.
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