Notice de montage Pic
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1. e Disconnect Hyper Terminal of the serial port by clicking the icon of taken down telephone e Go to the menu File Properties Parameters Ascii Configuration Ascii Cross the compartment reproduce locally the entered characters then close all the window by clicking on OK e Re connect Hyper Terminal by clicking the icon of hung up telephone e Save the connection which you can use henceforth all the time for your long communications with PIC ASTRO 1 2 Test of the serial connections This test has to be made only if you notice a dysfunction with Hyper terminal These tests must be made without the microcontroller PIC settled in PIC ASTRO Remove first the MAX 232 Make a strapp connect with a wire between pines 7 and 8 of the MAX 232 Connect the PC and PIC ASTRO Switch on PIC ASTRO Type characters on the keyboard Verify that each character typed is displayed 2 times on the screen Switch off PIC ASTRO This confirms the arrival of the signal RS 232 serial port up to the borders of the MAX 232 and the null serial cable Replace the MAX 232 on its support Make a strapp between pines 17 and 18 of the PIC Connect the PC and PIC ASTRO Switch on PIC ASTRO Type characters on the keyboard Verify that every typed character is twice shown on the screen Switch off PIC ASTRO This confirms the functioning of all the transmission chain by serial port the signal arrives to the PIC If that is not the case but that everythin2. PIC ASTRO A1 www astrimage org pic astro Test s manual of PIC ASTRO Al Version 1 0 EA ARES A 7 2 3 2 Test Vmax A saat eae eg 8 www astrimage org pic astro Page 2 sur 11 Tests amp configuration of Pic Astro 1 Preliminary tests of PIC ASTRO A1 1 1 Hyper Terminal Hyper Terminal is a software component of Windows allowing to communicate via the serial port with PIC ASTRO Thanks to Hyper Terminal you can make all the tests of communications with PIC ASTRO but also interact with the software of tests It s necessary above all to parametrize it e Connect PIC ASTRO A1 to the PC with the serial cable e Launch Hyper terminal Start Accessories Communications Hyper terminal Enter a name and click OK e Select the serial port where is plugged Pic Astro and click OK Connect To B ddd Enter details for the phone number that you want to dial Country region Area code Phone number Connect using COM1 Iv 1 Enter the following configuration for the connection then click OK Propri t s de COM1 Param tres du port Bits par seconde 19600 i Bits de donn es s o Parit Aucun Bits d arr t Contr le de flux Param tres par d faut The connection is now configured and Hyper Terminal is connected to the serial port as the icon with a small hung up telephone indicates it It is necessary now to modify the local echo of the seized characters
3. computer The launch is made by executing the file tinybldWin exe Mm 8 TinyBldWin zip It is available on the Web site of the association www astrimage org pic astro chapter Software for PIC astro TinyBld opens already configured for PIC ASTRO Tiny Bootloader C Documents and Settings neija My Documents perso Picdstro testMoteur hex Browse Comm Log Options 3600 y Interface to TinyBootLoader v1 70 A contact claudiu chiculita ugal ro COM1 y http www ete ugal ro cchiculita software picbootloader htm ta bles Connect COM1 ol 1 ok HEX 44 days old INHX32 18F code total 3148 words Searching for PIC Found 18F 252 452 WAI i TE OK time 9 804 sec Connect COM1 ok HEX 44 days old INHX32 18F code total 2135 words Searching for PIC Found 18F 252 452 WRITE OK time 6 720 sec Could not connect to COM1 ERROR Connect COM1 ok HEX 44 days old INHX32 18F code total 4015 words Searching for PIC Found 18F 252 452 Dont forget to check the speed rate to 9600 bauds To load a file in PIC ASTRO You just have to select it by clicking on Browse and to click on Write Flash A small moment before switching on PIC ASTRO A message will confirm you the success of the operation ATTENTION if the program test_18F was previously loaded in the PIC it is necessary to switch off PIC ASTRO to click Write Flash then to switch on PIC ASTRO 2 3 Utilities for testing PIC_AS
4. Astro This software is downloadable into the PIC with TinyBldWin following the procedure described in paragraph 2 2 2 This software has to be updated with each new version To check the good dialogue with a new version of software e Connect the PC to PIC ASTRO e Switch on PIC ASTRO e in Hyperterminal type CTRL lt F gt PIC ASTRO must answer by character P the logic part of PIC ASTRO is running 3 Configuration of PIC ASTRO 3 1 Specifications of the mount PIC ASTRO fits all German equatorial mounts whose motorisation is provided by stepper motors lt is very important for the configuration of PIC ASTRO to know exactly the characteristics of these e Number of steps per revolution of stepper motors e Gear ratios of motorcycle gear if there is one These may be different on the axis of right ascension and declination axis e Gear ratio of the helical worm gear In order to deduce the key parameter of the system configuration the number of steps half step or micro step to be made by the motors to make a worm turn or a displacement of 10 arc minutes in many cases and the subtleties that may exist where the motor and transmission of the two axes are not strictly identical These features will be input parameters of the configuration software and if they are unknown or uncertain a command LX200 specific on PIC ASTRO will enable you to find with certainty The Excel file below shows the settings for several common
5. TRO A1 Utilities for testing following are all functionning on the same principle you ll have to load the hex file containing the utility of test to execute in PIC ASTRO with the software TinyBldWin then launch a connexion Hyper Terminal that will allow you to follow the indications given by PIC ASTRO There are all available on the web site of the association www astrimage org pic astro chapter softwares for Pic astro 2 3 1 Test_18f hex This utility allows you to test the elementary functions of PIC ASTRO Launch Hyperterminal and make a reset of PIC ASTRO Then follow the instructions shown in Hyperterminal when press one touch is asked it is about a key of the keyboard of the PC e Buttons of the hand controller maneuver the various elements of the PAD and verify in Hyperterminal that this element is very active e Rotation of motors tests by pressing on a key of the keyboard In case of dysfunction of one of the organs the first elements who has to be verified are the tracks of circuits and welds The software having been tested the problem can be only hardware In case of not display in Hyperterminal make the preliminary tests described in the chapter 1 Note If your ordered your PIC to Astrimage Test_18f hex is already loaded in the PIC A SSSSSS TTTTTTT RRRRRR 00000 ae AA S T R RO 0 AAAAA SSSSS 1 RRRRRR 0 0 gore A SSSssss T R R 00000 22222 PROGRAMME DE TEST DE PIC ASTRO 2 ppuyer sur une tou
6. che Controle de la raquette Appuyer sur une touche pour finir ce test AD AD De De Foc Vit ee oe Connect ed 00 00 22 Auto detect 9600 8 N 1 2 3 2 Test Vmax This utility allows you to vary the speed of your motor through the control knob potentiometer of the PAD The threshold values obtained were eligible for the following and are given in us kk HyperTerminal Eile Edit View Call Transfer Help Dae 53 09 PPPPP a neee A SSSSSS TTTTTTT RRRRRR 00000 2222 R T I P Pi AA S T R 0 PPPPP I C AAAAA SSSSS T RRRRRR 0 222 P Ic A A S R R 0 2 I cecce A A SSSSSSS T R R 00000 22222 P PROGRAHME DE TEST DE VITESSE MAX SUR AD Controle du moteur AD en pas entier V rifier que le moteur AD tourne La vitesse est r glable par le PAD Appuyer sur une touche pour finir ce test As Connected 00 00 05 Auto detect 9600 8 N 1 Before switching on PIC astro you must positionned the potentiometer to maximum After switch on you must reduced potentiometer to speed up the motor In Hyperterminal you can read the ustep period from half step to step this value is given in us 2 3 3 Calibration of usteps Please read the document about this on our website www astrimage org 2 4 Software PIC ASTRO It is now necessary to load in PIC ASTRO the software tools to make it work Versions of the file containing this software is available on www astrimage org pic astro section Software for Pic
7. e motor Then you can make a visual test with a good station you can check that for a star it does not leave the field even at high magnification Be careful not to confuse a tracking error with a bad station or a periodic error 4 2 Tests on Goto mode To validate the proper functioning of PIC ASTRO you can test Goto in empty mode by helping with you coordinate rings of your mount To do that do the classic method for Goto see manual and make sure that the mount is moving from the right angle on each axis Beware of inaccuracies caused by poor quality circles coordinates Mechanical errors too high and or poorly compensated may also be important sources of error If PIC ASTRO tip objects with far too little or too much travel check the configuration settings are you sure the number of teeth on your sprocket The gear ratio of your gear or your pulleys Congratulations you arrived at the end of your sentences now it only remains to fully exploit PIC ASTRO Goto autoguiding You can refer to the documentation for using Pic Astro available on www astrimage org pic astro section documentation
8. g worked in the previous stage are you sure to have indeed a null cable 2 Configuration and tests 2 1 PIC programmed by Astrimage If you ordered the PIC to Astrimage this one contains the loader and the program test_18F you can go then directly to the paragraph 2 3 2 2 Programmation of PIC ASTRO 2 2 1 First programmation of the PIC If your PIC already contain the bootloader PICs ordered to Astrimage you can go directly to the next step TinyBld is a small software which is going to allow you to program the PIC uControllor through the serial port of your PC without needing a programmator It is necessary however to have programmed the PIC first time with the bootloader of TinyBld for PIC18F252 with a programmator The hex file that has to be loaded in the PIC is the following one tinybld18f hex It is available on the Web site of the association www astrimage org pic astro chapter Software for PIC astro Once this file loaded once for all in the PIC thanks to the programmator all the loads of software in PIC ASTRO will remit to TinyBld by using the serial connection Note if the programming is made with ICProg certain bits of configuration are not being programmable the value read by the fuses of configuration will not be inevitably the same that the one who was written 2 2 2 TinyBld The use of TinyBld is very simple you just have to download the file ZIP and to unzip it once for all in a folder of your
9. mounts and allows you to redo the calculation if necessary for yours au Mounts xls 3 2 Use of the command Zp The command Zp allows to move the motor connected to the DEC pin of PIC ASTRO for a certain number of steps It is very easy to use this command simply connect HyperTerminal to PIC ASTRO as usual way then type the following command for example The upper lower case must be respected Zp 92160 The motor will then move for 92160 usteps to the speed selected by the button of the PAD This command is essential to verify or determine the parameters of the mount In the case of a mount EQ 5 SP DX this allows to verify that 92160 usteps is the good value to turn the worm for a lap This parameter is essential for the configuration of PIC ASTRO Ideally this command is used on several laps in order to minimize errors due plays and read errors for example you can check that the worm does 10 laps for 921 600upas 3 3 Generate configuration file The configuration of PIC ASTRO is generated by a small software on your PC A configuration file will be generated and you have to transfer through TinyBld in the usual way The software for settings and his user s manual are available on www astrimage org pic astro section software for Pic Astro 4 Tests on the mount 4 1 Test for tracking sense First make sure the motor is running RA in the right direction if this is not the case reverse the connections 1 4 or 2 3 of th
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