BLUETOOTH FOR TELESCOPE HANDCONTROLLERS ALL INFORMATION, DOCUMENTS & VIDEOS HANDCONTROLLER UPGRADE BIBLE https://astro.marxram.de/handcontroller-upgrade-bible/ Roland Marx Version 1.0 (22.9.2018)
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CONTENT 1. General Information on Upgrading to BT 2. Bluetooth Modules Specs How to program BT Name, Pin Status LED 3. Hand Controllers in detail Skywatcher, MEADE, Celetsron HowTo solder guide (C) 2018 ROLAND MARX - ASTRO.MARXRAM.DE 3
CONTENT 1. General Information on Upgrading to BT 2. Bluetooth Modules Specs How to program BT Name, Pin Status LED 3. Hand Controllers in detail Skywatcher, MEADE, Celetsron HowTo solder guide (C) 2018 ROLAND MARX - ASTRO.MARXRAM.DE 4
GENERAL INFORMATION INTRODUCTION HOW DO BLUETOOTH UPGRADES WORK (C) 2018 ROLAND MARX - ASTRO.MARXRAM.DE 5
MANY CONTROLLERS SAME APPROACH (C) 2018 ROLAND MARX - ASTRO.MARXRAM.DE 6
IDEA: REPLACE CABLE BY BLUETOOTH Hand Controller RS 232 Cable 12 V Logic Levels RS232 USB Connector Serial Adapter to connect different Handcontrollers to a PC (not at the same time) (C) 2018 ROLAND MARX - ASTRO.MARXRAM.DE 7
IDEA: REPLACE CABLE BY BLUETOOTH + USE SMARTPHONES & TABLETS Hand Controller +BT Bluetooth Tablet Phone (C) 2018 ROLAND MARX - ASTRO.MARXRAM.DE 8
SCHEMATICS TTL Voltage Level (3V / 5V) RS232 Voltage Level +/- 12V Hand Controller Micro Controller Transmit Tx Receive Rx RS232 Driver TTL Voltage Level (3V / 5V) Hand Controller +BT Micro Controller Transmit Tx Receive Rx RS232 Driver Tablet Bluetooth Module 3V or 5V Phone (C) 2018 ROLAND MARX - ASTRO.MARXRAM.DE 9
CONNECTION PLAN Micro Controller VDD GND TX RX RX TX Bluetooth Module TX in RX in RS232 Driver TX out RX out Adding BT Module parallel to RS232-Driver RS232 and BT both functioning @9600 BAUD During Firmware upgrades Baud Rate changes! BT Module cannot change BAUD Rate disturbes signal Need to disconnect VDD, Rx & Tx from BT Module during FW-Update Upgrades only possible via RS232 Cable (C) 2018 ROLAND MARX - ASTRO.MARXRAM.DE 10
DRIVER-IC S USB-Driver Chips Easy to solder RS232-Driver Chips different sizes tough soldering Soldering pads nearby easy soldering (C) 2018 ROLAND MARX - ASTRO.MARXRAM.DE 11
CONTENT 1. General Information on Upgrading to BT 2. Bluetooth Modules Specs How to program BT Name, Pin Status LED 3. Hand Controllers in detail Skywatcher, MEADE, Celetsron HowTo solder guide (C) 2018 ROLAND MARX - ASTRO.MARXRAM.DE 12
BLUETOOTH MODULES TTL LEVELS QUALITY RANGE STATUS LED (C) 2018 ROLAND MARX - ASTRO.MARXRAM.DE 13
T T L TRANSISTOR TRANSISTOR LOGIC Voltage Levels of Microcontrollers Common voltage levels: 5V 3,3V 1,8V Microcontrollers and other chips Talk this voltage levels If connecting 5V and 3,3V Controllers Voltage levels need to be shifted! Handcontrollers using 5V: SynScan V3, NexStar, Meade AUTOSTAR I Handcontrollers using 3,3V: SnyScan V4, NexStar+, NexStar+ USB, StarSense, StarSense USB Chose a suitable Bluetooth Module (C) 2018 ROLAND MARX - ASTRO.MARXRAM.DE 14
BLUETOOTH MODULES WITH BT-SPP* *SERIAL PORT PROFILE HC-05 RN42 RN41 LM780 VDD 3,3V TTL 3,3V~(5V) Imax ~100mA BTClass 2 ~ 10m Price 2-10 $ Very Robust VDD 3,3V TTL 3,3V Imax ~100mA BTClass 2 ~ 10m Price 20-40 $ High Quality VDD 3,3V TTL 3,3V Imax ~100mA BTClass 1~100m Price 30-50 $ High Quality VDD 5V TTL 5V Imax ~100mA BTClass 2 ~ 10m Price 20-40 $ High Quality (C) 2018 ROLAND MARX - ASTRO.MARXRAM.DE 15
HC-O5 CHEAP BT-MODULE FOR MANY PURPOSES (C) 2018 ROLAND MARX - ASTRO.MARXRAM.DE 16
HC-05 Cheap ~ 2-10$ VCC - Input Voltage: 3,3V TTL Level: 3,3V (RX and TX tolerate ~5V) Adapter PCB reduces VCC from 4-6V to 3,3V Does not shift logic levels! Switch to enter programming mode Status LED State Pin (if LED pad soldered correctly) (C) 2018 ROLAND MARX - ASTRO.MARXRAM.DE 17
PROGRAMMING HC-05 1. Power On + KEY PIN HIGH Adapter Board: Hold button down while connecting to VDD 2. HC-05 enters AT Mode LED blinks slowly (2 seconds) 3. Now connect @38400 Baud HC-05: Commands are performed, after entering CR+LF Notice: HC-06: Commands are perfomed directly Need for speed or tool Commands & Answers Check Connection: AT OK Set Name: AT+NAME= My New Name OK Needs if blank characters used Set PIN: AT+PSWD=0000 OK Set UART: AT+UART=9600,0,0 OK sets Baud = 9600, Stop Bit = 1, Parity = 0 Get Name AT+NAME? (Works only if Key is HIGH) Get PIN AT+PIN? (C) 2018 ROLAND MARX - ASTRO.MARXRAM.DE 18
ARDUINO SERIAL BRIDGE Data forwarding via Arduino (C) 2018 ROLAND MARX - ASTRO.MARXRAM.DE 19
FTDI DIRECT PROGRAMING Direct transmit via FTDI Adapter (only HC-05, not suitable for HC-06) Attention: Every Character you type, is sent directly to the BT-Module! Using DEL-Key will result in Error Messages. Solution: Just Type AT + Enter to get in a correct state. (C) 2018 ROLAND MARX - ASTRO.MARXRAM.DE 20
RN 41 / RN 42 HIGH QUALITY MODULES WITH SHIELDING MORE RANGE WITH BT-CLASS 1 (RN-41) (C) 2018 ROLAND MARX - ASTRO.MARXRAM.DE 21
BLUETOOTH MODULES RN-41 & RN42 Cost 20-50$ High quality and certified VCC - Input Voltage: 3,3V TTL Level: 3,3V Change command mode via $$$ (C) 2018 ROLAND MARX - ASTRO.MARXRAM.DE 22
PROGRAMMING RN41 / RN 42 1. Connect @115200 BAUD If you changed the rate, use the new one afterwards! 2. Type $$$ to enter Command Mode Commands & Answers Command Mode $$$ CMD Get Device Info: D ***Settings***.. Set Name: SN,My New Name AOK Set PIN: SP,0000 AOK Set UART: SU,96 AOK Set PIN Authentication SA,4 AOK Set UART: R,1 Reboot! sets Baud = 9600, Stop Bit = 1, Parity = 0 (C) 2018 ROLAND MARX - ASTRO.MARXRAM.DE 23
FTDI DIRECT PROGRAMING if you changed baud rate, use the new one! (C) 2018 ROLAND MARX - ASTRO.MARXRAM.DE 24
LM780 TRUE 5V TTL LEVELS DISCONTINUED, BUT SOME STILL AVAILABLE (C) 2018 ROLAND MARX - ASTRO.MARXRAM.DE 25
BLUETOOTH MODULES LM78ß Cost 20-40$ High quality and certified VCC - Input Voltage: 5V TTL Level: 5V Production Discontinued (C) 2018 ROLAND MARX - ASTRO.MARXRAM.DE 26
STATUS LED (C) 2018 ROLAND MARX - ASTRO.MARXRAM.DE 27
CONNECTION STATUS LED Electrical Parameters Blue LED V ~ 3V We want dim LEDs I ~ 1mA Driving with 3,3V Use Resistor R ~ 800 OHM I commonly use 2x 470 OHM Different LED types Connection GND LED see diagrams (C) 2018 ROLAND MARX - ASTRO.MARXRAM.DE 28
EXAMPLES (C) 2018 ROLAND MARX - ASTRO.MARXRAM.DE 29
CONTENT 1. General Information on Upgrading to BT 2. Bluetooth Modules Specs How to program BT Name, Pin Status LED 3. Hand Controllers in detail Skywatcher, MEADE, Celetsron HowTo solder guide (C) 2018 ROLAND MARX - ASTRO.MARXRAM.DE 30
INSIDE SKYWATCHER HAND CONTROLLERS SYNSCAN V3, SYNSCAN V4 (C) 2018 ROLAND MARX - ASTRO.MARXRAM.DE 31
SYNSCAN V3 Important Facts 5V TTL Logic Levels Easy to Upgrade Display Beeper Crystal Micro-Controller Flash Memory 12 -> 5 V Voltage Regulator RS232 Driver RS232 Connector Telescope Connector (C) 2018 ROLAND MARX - ASTRO.MARXRAM.DE 32
SYSCAN V3 ~ HC-05 (C) 2018 ROLAND MARX - ASTRO.MARXRAM.DE 33
SYNSCAN V4 Important Facts 3V TTL Logic Levels Difficult to upgrade Display 12 -> 3 V Voltage Regulator Crystal Micro-Controller Flash Memory RS232 Driver RS232 Connector Telescope Connector (C) 2018 ROLAND MARX - ASTRO.MARXRAM.DE 34
SYNSCAN V4 ~ RN41/42 (C) 2018 ROLAND MARX - ASTRO.MARXRAM.DE 35
SYNSCAN V4 ~ RN41/42 (C) 2018 ROLAND MARX - ASTRO.MARXRAM.DE 36
INSIDE MEADE HAND CONTROLLERS AUTOSTAR I (II) (C) 2018 ROLAND MARX - ASTRO.MARXRAM.DE 37
AUTOSTAR I & II Important Facts 5V TTL Logic Levels Easy to Upgrade Display 12 -> 5 V Voltage Regulator Micro-Controller Beeper RS232 Driver Crystal RS232 Connector Telescope Connector (C) 2018 ROLAND MARX - ASTRO.MARXRAM.DE 38
AUTOSTAR I & II ~ HC-05 GND VDD Rx Tx Rx Tx (C) 2018 ROLAND MARX - ASTRO.MARXRAM.DE 39
INSIDE CELESTRON NEXSTAR CONTROLLERS NEXSTAR NEXSTAR+, NEXSTAR+ USB (C) 2018 ROLAND MARX - ASTRO.MARXRAM.DE 40
NEXSTAR Important Facts 5V TTL Logic Levels Easy to Upgrade Display Telescope Connector 12 -> 5 V Voltage Regulator Micro-Controller Crystal Flash Memory RS232 Driver RS232 Connector (C) 2018 ROLAND MARX - ASTRO.MARXRAM.DE 41
NEXSTAR ~ HC-05 (C) 2018 ROLAND MARX - ASTRO.MARXRAM.DE
NEXSTAR+ Important Facts 3V TTL Logic Levels Difficult to upgrade Display Telescope Connector 12 -> 3 V Voltage Regulator Crystal Micro-Controller Flash Memory RS232 Driver RS232 Connector (C) 2018 ROLAND MARX - ASTRO.MARXRAM.DE 43
NEXSTAR+ ~ RN41/42 NexStar+ and SynScan V4 have nearly identical parts & PCB (C) 2018 ROLAND MARX - ASTRO.MARXRAM.DE 44
NEXSTAR+ ~ RN41/42 NexStar+ and SynScan V4 have nearly identical parts & PCB (C) 2018 ROLAND MARX - ASTRO.MARXRAM.DE 45
NEXSTAR+ USB Important Facts 3V TTL Logic Levels Easy to upgrade Display Telescope Connector 12 -> 3 V Voltage Regulator Crystal Micro-Controller Flash Memory USB Driver USB Connector (C) 2018 ROLAND MARX - ASTRO.MARXRAM.DE 46
NEXSTAR+ USB ~ HC-05,RN41/42 (C) 2018 ROLAND MARX - ASTRO.MARXRAM.DE 47
INSIDE CELESTRON STARSENSE CONTROLLERS STAR SENSE STAR SENSE USB (C) 2018 ROLAND MARX - ASTRO.MARXRAM.DE 48
STAR SENSE Important Facts 3V TTL Logic Levels Medium to upgrade Display Telescope Connector 12 -> 5 V Voltage Regulator 12 -> 3 V Voltage Regulator Micro-Controller Crystal Flash Memory RS232 Driver RS232 Connector (C) 2018 ROLAND MARX - ASTRO.MARXRAM.DE 49
STAR SENSE (C) 2018 ROLAND MARX - ASTRO.MARXRAM.DE 50
STAR SENSE USB Important Facts 3V TTL Logic Levels Easy to upgrade Display Telescope Connector 12 -> 5 V Voltage Regulator 12 -> 3 V Voltage Regulator Micro-Controller Crystal Flash Memory USB Driver USB Connector (C) 2018 ROLAND MARX - ASTRO.MARXRAM.DE 51
STAR SENSE USB ~ HC-05,RN41/42 (C) 2018 ROLAND MARX - ASTRO.MARXRAM.DE 52
More Videos and Documents https://astro.marxram.de/handcontroller-upgrade-bible/ 1. General Information on Upgrading to BT 2. Bluetooth Modules Specs How to program BT Name, Pin Status LED 3. Hand Controllers in detail Skywatcher, MEADE, Celetsron HowTo solder guide (C) 2018 ROLAND MARX - ASTRO.MARXRAM.DE 53
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