gca50_an-en
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| gca50_an-en [2019/05/29 11:56] – [Jumper settings.] phg | gca50_an-en [2023/09/04 11:54] (current) – [Introduction] phg | ||
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| - | ======GCA50_A(N) LNet IO, based on Arduino Nano====== | + | ======GCA50_a LocoNet® |
| [[english|{{ | [[english|{{ | ||
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| ^^^^By Peter Giling ^^^^ | ^^^^By Peter Giling ^^^^ | ||
| =====Introduction===== | =====Introduction===== | ||
| - | The GCA50a is functional equal to the previous (and still satisfactory running) GCA50.\\ | + | The GCA50a is functional equal to the previous (and still satisfactory running) GCA50 and GCA185 boards.\\ |
| - | But with the more and more popular Arduino processor boards, specially here the Atrduino | + | But with the more and more popular Arduino processor boards, specially here the Arduino |
| Firmware sketch, developed by several enthousiast software writers, is all in open source available.\\ | Firmware sketch, developed by several enthousiast software writers, is all in open source available.\\ | ||
| Special thanks to Dani Guisado in Spain who also tested this board for his own use in CLUB-N-Caldes.\\ | Special thanks to Dani Guisado in Spain who also tested this board for his own use in CLUB-N-Caldes.\\ | ||
| See http:// | See http:// | ||
| - | GCA50_AN | + | GCA50_a |
| First the software is reacting much faster compared to GCA50.\\ | First the software is reacting much faster compared to GCA50.\\ | ||
| Second, it fits in a standard LDT-1 box, available from Littfinsky.\\ | Second, it fits in a standard LDT-1 box, available from Littfinsky.\\ | ||
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| Even a conversion between SUB-D9 (male/ | Even a conversion between SUB-D9 (male/ | ||
| In configuration there is no significant different between GCA50 and GCA50a.\\ | In configuration there is no significant different between GCA50 and GCA50a.\\ | ||
| - | Please refer to [[http:// | + | Please refer to [[http:// |
| - | + | **Important note:** \\ | |
| - | \\ | + | **There is only one unfortunate disadvantage of using a Nano for this solution: Port 10 is only available as OUTPUT, INPUT does not work.**\\ |
| + | This means that either just forget about port 10 when used as input, or choose GCA50 or GCA500.\\ | ||
| + | * **Note:** In this **[[https:// | ||
| \\ | \\ | ||
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| First option is supply via RJ12 LocoNet.\\ | First option is supply via RJ12 LocoNet.\\ | ||
| This is the railsync (DCC) power, standard in LocoNet systems.\\ | This is the railsync (DCC) power, standard in LocoNet systems.\\ | ||
| - | But you need definately | + | But you need definitely |
| The other option for supply is using the 12V via D-connectors. | The other option for supply is using the 12V via D-connectors. | ||
| The jumper itself has indication on board which one to choose from.\\ | The jumper itself has indication on board which one to choose from.\\ | ||
| Unlike the GCA50, this unit has a newer way of supply.\\ | Unlike the GCA50, this unit has a newer way of supply.\\ | ||
| - | Basicly, there was nothing wrong with the well known LM7805 linear regulator.\\ | + | Basically, there was nothing wrong with the well known LM7805 linear regulator.\\ |
| But when a bit more current is drawn from this unit, the regulator gets pretty hot.\\ | But when a bit more current is drawn from this unit, the regulator gets pretty hot.\\ | ||
| This means that quite a bit of power is converted to heat, so it is not very economic.\\ | This means that quite a bit of power is converted to heat, so it is not very economic.\\ | ||
| The new R-78E switching regulator here is capable to supply up to 1 Amp at 5V without hardly any power loss.\\ | The new R-78E switching regulator here is capable to supply up to 1 Amp at 5V without hardly any power loss.\\ | ||
| - | It can handle up to 1 Amp continously | + | It can handle up to 1 Amp continuously |
| But still , it remains possible to use the good old (and cheaper) 7805.\\ | But still , it remains possible to use the good old (and cheaper) 7805.\\ | ||
| To do that, fix it with fastener and nut, and use extra nut between pcb and regulator, \\ | To do that, fix it with fastener and nut, and use extra nut between pcb and regulator, \\ | ||
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| ^ Final version GCA50a | ^ Final version GCA50a | ||
| - | | {{ :gca:gca50_an_sch.pdf |The schematics}} | + | | {{ :gca:gca50a_sch.pdf |The schematics}} |
| - | | {{ :gca:gca50-an_pcb.pdf |PCboard and parts positions}} | + | | {{ :gca:gca50a_pcb.pdf |PCboard and parts positions}} |
| - | | {{ :gca:gca50_an_parts.pdf |Bill of materials}} | + | | {{ :gca:gca50a_parts.pdf |Bill of materials}} |
| \\ | \\ | ||
| \\ | \\ | ||
| - | ===== Firmware | + | ===== Firmware |
| Download SVLocoIO form the Github page: https:// | Download SVLocoIO form the Github page: https:// | ||
| - | This zip file contains all needed firmware for Arduino Nano.\\ | ||
| + | |||
| + | This zip file contains all needed firmware for Arduino Nano.\\ | ||
| + | Peter Giling will not discuss any comments on this sketch.\\ | ||
| + | **N.B. All Arduino related kits will not be programmed.** | ||
gca50_an-en.1559123782.txt.gz · Last modified: 2019/05/29 11:56 by phg