Arduino bootloader
What is the arduino bootloader ? It’s the thing that loads stuff when booting. Done Not funny you say ? … ok , ok I’ll try this again… It’s a special program that on boot waits for a signal from the PC that is connected to …
Tag: arduino
ATmega power consumption (I)
A few days ago I received a special request. It was about a circuit running on an ATmega328 that was supposed to replace and improve upon an circuit based on the much older ATmega8. One of the requirements for the older circuit was an as low as possible power consumption. …
Project : Steering wheel audio controls – Improvements
Well, seems like the conclusions article was not the end of the story for my little car upgrade. After installation one big issue is that there’s no actual access to the car’s computer to input the lock and unlock signals. I also have to found any comprehensive diagram of the …
Arduino – IRLIb2
In my Arduino-based-car-radio-steering-wheel-interface-thing I talked a lot about infrared communications (IR communications) but without going into great detail about it. Infrared light is light transmitted at frequencies low enough that the human eye can’t see. This became especially useful to the mass consumer market when TV sets became widespread. The …
Project : Steering wheel audio controls – Conclusions
Building the module has been an interesting experience. I tried something new (at least for me) on the circuit. I didn’t talk much about the circuit used to power all of this in the other articles because I purchased an off the shelf module. To be more exact I opted …
Project : Steering wheel audio controls – Programming II
Let’s hit this nail on the head. Last time I talked about some general considerations regarding the code. Now I want to go through the code in blocks and, hopefully, give you an understanding of what I did and why I did it for you to know what works or, …
Project : Steering wheel audio controls – Programming I
After assembling the hardware on a breadboard, I started experimenting with the code. I also got the remote handy, remember in a previous posting I talked that the head unit came with a small remote. Just as a reminder the head unit is a CDX-GT410U and the remote is model …
Project : Steering wheel audio controls – Circuit Design
Now let’s look at designing a circuit to run the mess of cables I have shown in the last posting. The resulting circuit needs to be able to: Transmit an infrared signal to control the car radio. This will be accomplished by an infrared led controlled by one of my …
Project : Steering wheel audio controls
Project: Steering wheel car controls for SONY CDX-GT410U Objective: Connecting Astra G factory audio steering wheel controls to SONY CDX-GT410U car stereo unit Issue being solved: While the Opel Astra G (1998-2009) has the factory option of fitting audio controls under the steering wheel for quick access to the radio …
Arduino – switching loads
Hello again. We talked in the last posts about turning outputs on and off and how that enables the Arduino to interact with the environment by switching loads on and off. So, in this post I will address how exactly that interaction will happen and I hope I will clear …