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STD PiRaTe-IO-Board
PiRaTe-IO-Board
License
CC-BY-SA 3.0
License: CC-BY-SA 3.0Mode:
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Update time：
2022-03-02 20:41:16
Creation time：
2021-04-04 10:25:59
Description
Description
PiRaTe - The Pi Radio Telescope Board
Main carrier board for components required for the operation of a DIY RPi-based AzAlt telescope mount which will be utilized to operate a radio telescope.
Features
- Accomodates a Pololu Dual VNH5019 Motor Driver Shield
- Accomodates two RS422-Converters for interfacing industry standard SSI rotational encoders
- Accomodates two ADS1115 break-out boards for analog inputs: one for measuring the motor currents and two fieldstrength voltages and one for surveillance of four system voltages (3.3V, 5V, 12V and 24V) through resistive dividers
- One 40-pin GPIO pinheader interface to RPi
- Accomodates one GNSS receiver board
- Screw connector terminals for connection and debugging
- Accomodates a 4-channel relay board
- Accomodates a level shifter board for translation of voltage levels from/to 3.3V GPIO
- Connection for 1-wire and some general purpose digital I/O
The software is hosted on github under https://github.com/hangeza/indi-rpi-radiotelescope.
It consists of a customized device driver for the INDI ecosystem.
Design Drawing
Design Drawing
schematic diagram
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PCB
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| ID | Name | Designator | Footprint | Quantity |
|---|---|---|---|---|
| 1 | HDR-M-2.54_1x2 | 5V | HDR-M-2.54_1X2 | 1 |
| 2 | HDR-M-2.54_1x1 | GPIO0,GPIO1 | HDR-M-2.54_1X1 | 2 |
| 3 | CONN-TH_2P-P5.08 | P1,P2,P3,P4,P5,P6,P7,P8 | CONN-TH_2P-P5.08 | 8 |
| 4 | RASPBERRYPI-B+-GPIO | P10 | 2X20-SHROUDED | 1 |
| 5 | 3k3 | R1 | R_AXIAL-0.4 | 1 |
| 6 | 10k | R2,R3,R4,R6,R7,R8 | R_AXIAL-0.4 | 6 |
| 7 | 100k | R5,R9 | R_AXIAL-0.4 | 2 |
| 8 | ADS1115_ALIEXPRESS | U1,U2 | ADS1115_MODULE_ALIEXPRESS | 2 |
| 9 | RS422_TTL_5V | U3,U4 | HC_RS422_TTL_5V | 2 |
| 10 | POLOLU DUAL VNH5019 MOTOR DRIVER SHIELD | U5 | DUAL VNH5019 MOTOR DRIVER SHIELD | 1 |
| 11 | UBLOX NEO M8N MODULE | U6 | UBLOX NEO-M8N MODULE | 1 |
| 12 | 4_RELAYS_MODULE with JD-VCC | U7 | 4 RELAY MODULE RELM-4 | 1 |
| 13 | Logic_Level Bidirectional | U8,U9 | LOGIC_LEVEL BIDIRECTIONAL | 2 |
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