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Here is how to make a SIMCOM 7600 module work on an Arduino board (Uno, Mega 2560, Leonardo, Due, Micro, Zero, Nano, Pico), ESP8266, ESP32, Raspberry Pi Pico, MicroPython, or any other microcontroller. If your module accepts 5-10V, the short answer is the following diagram: SIMCOM SIM7600 GSM/GRPS/GPS/Bluetooth Modules will consume a peak current of […]
I will tell you about my experience repairing a cargo ship as a naval Engineer. Some months ago, you could read in the local newspaper Málaga Hoy that a large cargo ship was approaching Málaga after a major accident it had suffered in its front part. It was the cargo ship Integrador with a Panamanian […]
During our operations, very often, we use a Waterlinked Underwater GPS. This helps us to keep track in 3D of our movements and link video recording’s timing and telemetry to specific places. These experiments were done together with Andalú Sea. Some examples of these 3D tracks are: Thanks to this technology, we can position the […]
I have experimented very much with photogrammetry and got exciting results. This article talks about this experience. These experiments were done together with Andalú Sea and my friend Juan Soler. During underwater operations, we always record videos of the whole process just in case of problems and for documentation purposes. We checked a sewage outfall […]
In my last post, “Alioli ROV Boards“, I described most of the hardware I use to build Alioli ROV and how I plan to use it. In this post, I show how the UAV submarine hardware and electronics interconnect with each other and the boards I have built for that purpose: the engines, driver, board, […]
In my last post, “Get your hardware for Arduino Underwater ROV”, I described most of the hardware I use to build Alioli ROV and how I plan to use it. In this post, I will show how the hardware interconnects with each other and the boards I have built. During the process of building Alioli […]
In my last post, “Finishing the frame for an Underwater ROV”, I gave all details about the design I used to build the frame for Alioli Underwater ROV. In this post, I will show what hardware I will use and how to use it. Until now, I have been looking to get together and control […]
In my last post, “How I designed the frame for my Underwater ROV“, I gave all details about the design I used for the frame for Alioli Underwater ROV. In this post, I show what I did to build my submarine frame. To get everything together, I put screws in all junctions, as shown in […]
In my last post, “Underwater Alioli ROV“, I shared all the information I got from the Internet to build my Underwater ROV. In this post, I will explain how I made the frame. The main thing the ROV needs to become real is a frame, something to rest on. After checking several designs from different […]
This time I have decided to write this article in English because I have been able to get a lot of information. Thanks to that, most of the information I found to help me with this project was in English. A long time ago, I tried scuba diving, and after some time, I decided to […]
Here is how to make a SIMCOM 7600 module work on an Arduino board (Uno, Mega 2560, Leonardo, Due, Micro, Zero, Nano, Pico), ESP8266, ESP32, Raspberry Pi Pico, MicroPython, or any other microcontroller.
If your module accepts 5-10V, the short answer is the following diagram:
SIMCOM SIM7600 GSM/GRPS/GPS/Bluetooth Modules will consume a peak current of 2A when communicating with the network. Most probably, your power source can not provide that current. I had those problems using a power supply connected to my home electricity that technically provides 10A, do not despair.
The solution is to add a couple of supercapacitors before feeding the module. The SIMCOM module I am using is a SIM7600E-H1C. I tested with other SIM7600 modules with similar success.
WARNING: Before connecting any capacitor or supercapacitor, ensure the details of your ones. Every capacitor has a “polarity” and a working “voltage”. If you supply a higher voltage to your capacitor than what it is specified, it may “EXPLODE”.
For 2 equal capacitors the equations will look like: VT = VC1 + VC2 CT = (C1 * C2) / (C1 + C2) For 9V power supply: VT = 9V VT = VC1 + VC2 (where VC1=Q/C1 and VC2=Q/C2 and C1=C2 so Q/C=VC1=VC2=VC) VT = 2VC VC = VT / 2 VC = 9V / 2 VC = 4.5V = VC1 = VC2 VC1 = 4.5V and VC2 = 4.5V For 2 supercapacitors of 1.5F each with 9V power supply: CT = (C1 * C2) / (C1 + C2) CT = (1.5F * 1.5F) / (1.5F + 1.5F) CT = 2.25F / 3F CT = 0.75F
Now you can check on YELLOW the results from these equations:
