After reading this tutorial, you will have your own satellite (DIY full explanation)

Create an error log , You will have your own satellite （diy Full explanation ）

0. Preface

Am I inflated , Even satellites dare to do it ？ I wonder if you ever thought about making a satellite yourself ？ After reading this article , You can also make your own satellite , If you want to go to heaven, you need a rocket ！

/// Insert a ： At the beginning of this year, I recorded a set of systematic introductory single chip microcomputer tutorial , If you want, just ask me for it. It's free , I can send a private message ~ Click on my avatar in black font and I can also get it . I've been relatively idle recently , Take me to finish the design , Take students to provincial or above competitions ///

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Share one today GitHub The open source project on ——FossaSat-1 Open source satellite ,Fossasat-1 It's a non-profit organization in Spain Fossa Systems Developed microsatellites . The volume is only 5x5x5cm size , Weight only 250g, This is the smallest satellite ever launched into space .

FossaSat-1 Already in 2019 At the end of the year Electron The rockets , Successfully launched into the sky .

FossaSat-1 It's cheap LORA modular , Anyone can use LORA The module communicates with the satellite . This new radio system has never been used in space before , Greatly reduce the cost of satellites . Besides , This satellite will create a new environment , Designed to test student code .

At the end of the article , All software and hardware data of open source satellite .

1. The hardware circuit and the hardware system circuit are also relatively simple , It mainly includes 3 A board , They are the power board 、 Sensor board and communication board . The main control chip uses Atmega 328P-AU, In fact, that is Arduino The master of ,8 position AVR Single chip microcomputer .

Power Supply Board . Use SPV1040 Solar cell charging management chip , On board 1000mAh Lithium battery charging , adopt TC1262 LDO Convert the battery voltage to 3.3v Power the whole system .

Sensor board . On board MPU6050 gyroscope , Yes, that's the very common MPU6050,HMC5883LSMD Magnetometer ,BMP280 Temperature and barometer , And set aside multiple IIC Interface , Used for external sensor module ,

Communication and control board . It mainly includes Atmega 328P Minimum system ,LORA modular SX1276,USB-TTL circuit , The use of FT232 chip , and SD Card interface .

FossaSat-1 Of PCB It's open source KiCAD Software rendering .

LORA Domestic dorgi used in the module DORJI The company's DRF1268T, Domestic products go to the world ！

2. Software architecture

The whole software part is based on Arduino Developed , It mainly includes the following parts ： - MPU6050 The driver  - BMP280 The driver  - LORA Send and receive processing  - HMC5883LSMD Magnetometer driver  - SD The card stores log data  - External voltage detection

3. Data download

All the data of this open source satellite project , Including schematic diagram 、 Software code 、 Mechanical structure 、 Documentation and other materials can be obtained from the following open source address

Okay , The circuit diagram and code are available , Just a rocket to the sky .

You can ask me for reference materials .