Modifikovan� dekod�r pro DCC provoz 3V nebo 5V motor� |
Modified DCC decoder for 3V or 5V voltage motors |
ObsahProjekt uzn�v� autorsk� pr�va Georga Zeiglera a jeho Self made DCC-Decoder |
IndexProject respect author rights of Georg Zeigler and his Self made DCC-Decoder |
Ne� za�neteP�ed za��tkem je pot�eba si uv�domit, co tento dekod�r p�edstavuje a co naopak neumo��uje.Podstata dekod�ru je umo�nit provoz speci�ln�ch vozidel kter� maj� velk� n�roky na prostorov� rozlo�en� dekod�ru a neumo��uj� pou�it� b�n�ho dekod�ru.
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Before you beginsBefore you begin, it is good to remember what you can do with decoder and what decoder not enable you to do.Principles of decoder is enable special locomotives and cars with special requests for used space and not allows to use standard decoder.
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 M��en� spot�eby motoru | Measurement consuption of motor |
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Zapojen�Cht�l bych se omluvit v�em, kte�� zde o�ek�vali opravdov� elektrick� sch�ma. Zve�ejnil jsem tuto mnemotechnickou mal�vku, ptoro�e je mnohem p�ijateln�j�� pro v�t�inu model��� |
SchematicsAt the begin I would like to appologize to everybody who expect here electrical schematic. I published this mnemotechnic painting insted of schematics, because it is usefil for many train modelers |
 Mnemotechnick� mal�vka m�sto sch�matu | Mnemotechnic painting insted of schematics decoder.wmf |
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Vysv�tlen� obr�zkuBarevn� konce ozna�uj� barvy vodi�� podle NMRA noremPokud se dva vodi�e k���, jedn� se o nevodiv� k��en� Vodiv� spojen� je ozna�eno kole�kem v m�st� k��en� Procesor (PIC12F629) je nutn� p�ed osazen�m naprogramovat Na obr�zku je modr� �ipka kter� ukazuje sm�rem k modr�mu kole�ku. Ta slou�� k volb� nap�jen� pro sv�tla. Pokud je vodi� p�ipojen do (1), bude nap�jen� sv�tel klasick� 14V, pokud je p�ipojen� do (2), bude nap�jen� 5V (vhodn� pro LED). V p��pad� �e budeme sv�tla nap�jet 5V je pot�eba jejich spot�ebu zahrnout ke spot�eb� motoru. Funkce Aux1 je ur�en� k p�ipojen� pouze jedn� LED diody spolu s odporem 470R. Druh� v�vod diody se p�ipojuje do m�sta ozna�en�m �ervenou trojkou. Pokud nehodl�me pou��vat sv�tla v�bec, je mo�n� vynechat obvod FDC6303N V prav�m horn�m rohu jsou nakresleny 4 diody. Jejich ��el je sn�en� nap�t� na motoru - ka�d� dvojice p�edstavuje �bitek 0,7V, nap�t� bez diod je cca 5V. Pokud tedy chceme provozovat motor s pracovn�m nap�t�m 4,5V a v�t��m, diody nepot�ebujeme, pro motory 3V diody zapoj�me. P�i n�kupu diod po�adujeme b�n� diody, ale d�v�me si z�le�et, aby hodnota jejich proudov�ho zat�en� (If) byla v�t�� ne� proud motoru. Dioda 1N4148 MICRO MELF je sice nejmen��, ale m� proud jen 150mA (sta�� na motory z mobilu do pr�m�ru cca 4mm), Dioda 1N4148 SMD 1206 m� proud cca 300mA (to je dost pro motory cca 6mm) Pak u� budeme pot�ebovat diody typu SUF4004 SMD nebo 1N4007 SMD, ty maj� proud a� 1A. Na obr�zku je tak� stabiliz�tor 78M05 SND DPAK, jeho proudov� zat�en� je 500mA (0,5A), pokud je proud motoru v�t�� (+ proud sv�tel), je pot�eba pou��t 7805 DPAK, ten m� zat�en� a� 1A, ale m� sklony se h��t. Kondenz�tory na obr�zku slou�� mimo jin� k udr�en� nap�jen� p�i p�ej�den� vyhybek. Jejich hodnota 4,7uF je asi nejmen�� pou�iteln�, pokud m�me mimo��dn� dobr� koleje, mo�n� si vysta��me s 2,2uF, nicm�n� sp� budeme nuceni hodnotu zv�t�ovat. Zv�t�ov�n� kapacity kondenz�toru vlevo je efektivn�j��, ale z�rove� rychleji porostou jeho rozm�ry rychleji ne� u prav�ho. |
Figure descriptionColor marking of end of wires respecting color schema recommended by NMRAIf here is a cross of wires - it is isolated cross Conducted connection is marked by circle Procesor PIC12F629 must be programed before appliing On the picture is blue arrow pointing to blue lines. It is used for powering lights. If the wire is connected to (1), the voltage for lights will be usual 14V, if it is connected into (2), voltage will be 5V (suitable for LEDs). In a case of usage 5V lights, it is necessarry to add consuption of lights into consuption of engine Output Aux1 is designed only for connection one LED diode with a rezistor 470 ohm. oposite connection is marked by red number (3) If we are not planing to use lights at all, we can remove also FDC6303N In upper right corner we have four diodes. These diodes are used for decreasing voltage for motor. Every two diodes decreasing by 0.7V, voltade without diodes is cca 5V. For connecting motors with voltage 4.5V and more diodes are not necessarry, for 3V motors we need diodes. When buying diodes must be carefoul, that working forward curent (If) is bigger, than current of engine. Diodes 1N4148 MICRO MELF are small, but current is only 150mA (for motors cca 4mm diameter), Diodes 1N4148 SMD 1206 have current cca 300mA (suitale for motors cca 6mm) Next level is diode types SUF4004 SMD or 1N4007 SMD, they have curent cca 1A. On figure we have stabilisator 78M05 SND DPAK, its current is cca 500mA (0,5A), if motor current is bigger (+ lights), we need 7805 DPAK, it have cca 1A, but sometimes heating. capacitors on picture are used also for powering decoder during corsing turnouts. Value 4,7uF is a minimum suitable, if you have good layout, it is possible, that 2,2uF will work, we can expect, that we will need increase value of capacitors. Increasing of capacity left hand capacitor is more efective, but it increase size faster than right hand. |
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Sou��stky kupuji v GME S380 SMD 78M05 SMD DPAK 1N4148 SMD PIC12F629 I/SN Kondenz�tor 4,7uF / 25V Kondenz�tor 4,7uF / 10V Co nemaj�, tak kupuju u farnell Si9986CY FDC6303N Program pro PIC je mo�n� pou��t origin�l (ten pro 12F629) Pro�n� spoj tak� podle origin�lu |
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| CV | Popis | Description | |
|---|---|---|---|
| CV1 | Prim�rn� adresa | Primary Address | 3 / 1-99 |
| CV2 | Vstart | Vstart | 0 0-255 |
| CV3 | Zrychlen� | Acceleration Rate | 255 0-255 |
| CV4 | Zpomalen� | Deceleration Rate | 255 0-255 |
| CV5 | Vmax | Vmax | 255 0-255 |
| CV6 | Vmid | Vmid | 0 0-127 neg. 128-255 pos. |
| CV17 | Dlouh� adresa spodn� ��st | Extended Address Low Byte | 0 |
| CV18 | Dlouh� adresa horn� ��st | Extended Address High Byte | 0 |
| CV19 | Adresa soupravy | Consist Address | 0 0-255 |
| CV29 | 0=DIR 1=14/28 2=PWRSRC 3=ADVACK 4=SPDTAB 5=LADRE 6= 7=ACCDEC (viz. dole) | 0=DIR 1=14/28 2=PWRSRC 3=ADVACK 4=SPDTAB 5=LADRE 6= 7=ACCDEC (see below) | 0 0-255 |
| CV49 | V�stup F1=F8 na GP2 Bity 76543210 = F87654321 | Output F1-F8 to GP2 Bit 76543210 = F87654321 | 0 0-255 |
| CV50 | V�stup F1=F8 na GP4 | Output F1-F8 to GP4 | 0 0-255 |
| CV51 | V�stup F1=F8 na GP5 | Output F1-F8 to GP5 | 0 0-255 |
| CV55 | Vmax �. 2 p�ep�nan� pomoc� F1-F8, nebo sm�ru j�zdy | 2. Vmax switchable over F1-F8 or over drive direction | 0 0-255 |
| CV64 | 0=FLOFF 1=BLOFF 2=RDLTON 3=BRKON 4=HI2LOFS 5=FLACKON 6=LITAUTO 7= (viz. dole) | 0=FLOFF 1=BLOFF 2=RDLTON 3=BRKON 4=HI2LOFS 5=FLACKON 6=LITAUTO 7= (see below) | 0 0-255 |
| CV29 | Popis | Description | |
|---|---|---|---|
| CV29,0 | DIRINV | Oto�en� sm�ru (j�zdy a sv�tel) | direction inverted (travel+light) |
| CV29,1 | 14/28 | Po�et j�zdn�ch krok� 14 nebo 28 | 14/28 speed steps |
| CV29,2 | LIINV | Oto�en� sv�tel | Lights inverted |
| CV29,4 | STAB | Rychlostn� tabulka / CV2, CV5 a CV6 | Speed tab / CV2, CV5 and CV6 |
| CV29,5 | LADRE | Povolena dlouh� adresa | Long address enable |
| CV29,6 | ACKOFF | Vypnut� ACK pro podru�n� dekod�ry (nepou��vat) | acknowledge off for piggy bag decoder (don't use this bit) |
| CV64 | Popis | Description | |
|---|---|---|---|
| CV64,0=1 | FLOFF | P�edn� sv�tla se nastavuj� podle CV50 (GP4) | front light switch with cv50 (GP4) |
| CV64,0=0 | RANGIER | Mapov�n� podle FLOFF | low activ, mapped with FLOFF |
| CV64,1=1 | BLOFF | Zadn� sv�tla se nastavuj� podle CV51 (GP5) | back light switch with cv51 (GP5) |
| CV64,1=0 | SPEED2 | Mapov�n� podle BLOFF | low activ, mapped with BLOFF |
| CV64,2 | RDLTON | �erven� sv�tla aktivovan� (zadn� sv�tla) | red light on (back light) |
| CV64,3 | BRKON | Brzdov� sv�tla zapnuta | brake light on |
| CV64,4 | HI2LOFS | Rezervov�no | Reserved |
| CV64,5 | FLACKON | Blik�n� povoleno | Flickering on |
| CV64,6 | LITAUTO | otev�en�/zav�en� kotle automaticky | firebox open/close automatically |
| CV55 stejn� jako cv5, aktivuje se prost�ednictv�m cv64,1=0, Norm�ln� zapnuto, a p�ep�n� se prost�ednictv�m cv51. pokud je cv55=0 potom je Vmax �. 2 neaktivn�. pokud je cv51=0 potom je Vmax �. 2 pou�ito podle sm�ru. pokud je cv29,0=0 potom cv5 ovl�d� vm�r dop�edu a cv55 ovl�d� sm�r dozadu. Nap��klad: m�me cv64,0=0, cv64,1=0 cv50,1=1 a cv51,1=1 potom F2 zap�n� sv�tla na obou stran�ch a z�rove� aktivuje Vmax �. 2 ulo�enou v cv55. |
cv55 same as cv5, activate over cv64,1=0, normal on, and switchable over cv51 is cv55=0 then the 2nd Vmax is deactivated. is cv51=0 then the 2nd Vmax is for direction use. if bit cv29,0=0 then cv5 controls forward direction and cv55 controls reverse direction. for example: is cv64,0=0, cv64,1=0 cv50,1=1 and cv51,1=1 then F2 switches the light on both sides on and activate the 2nd Vmax over cv55. |