ARCHIVED FORUM -- March 2012 to February 2022READ ONLY FORUM
This is the second Archived Forum which was active between 1st March 2012 and 23rd February 2022
Frage zu BEO IR-Eye VersionIch habe ein IR-Eye erworben und es funktioniert nur der IR Sensor.Die Part Nr des EYE ist :8007086161021107bei diesem Eye ist auch nur eine LED Verbaut (für PLAY), der gesamte Sensor ist in SMD-Technik hergestellt.
Über den I2C-Bus kann ich die Tasten und die LED nicht abfragen,gibt es irgendwo, oder von Irgendjemanden ein Schaltbild oder nähere Informationen zu diesem EYE ?
Question about BEO IR-Eye versionI have purchased an IR eye and only the IR sensor works.The Part No. of the EYE is:8007086161021107There is only one LED built into this eye (for PLAY), the entire sensor is made using SMD technology.
I cannot query the buttons and the LED via the I2C bus, is there somewhere or somebody a circuit diagram or more information about this EYE?
wilfried
Hi Wilfried
I managed to write an Arduino code that is able to interact with the I2C chip on the IR eye. Let me know if you are interested.
Hello styppen,I also wrote an Arduino sketch, with which I can determine the I2C address of the built 8574 and with which I can test the 4 buttons and 2 LEDs, as well as the IR function.Works with 3 other IR Eyes, but not with the type described here.But I'm always very interested in the Arduino code, can you send it to me by email or PM?
What is the I2C chip on your version of the IR eye?
I cannot determine the type of I2C chip on this IR Eye, the SMD chips are too small and the labeling is illegible, unfortunately I also have no circuit diagram of this IR Eye.
if I connect an Arduino via 10kohm pullup to the I2C bus, the program hangs up and only continues when the I2C bus is disconnected!
Normale the I2C chip is a PCF8574n on the IR Eyes, I don't know if that changed in newer versions or the IR-Eyes!
I only have experience with PCF8574 I2C. Maybe someone can provide more info regarding the I2C chip in this specific version.
Looking like one of the newer IR eyes with an embedded MCU and the screw connectors marked with Rx/Tx instead of SDA/SCL. So the best bet here is that communication is UART instead of I2C. Without knowing the protocol it might be a lot harder than just directly interfacing with a port expander over I2C. Best way to get started is sniffing the communication with a logic analyzer while the IR eye is connected to a matching newer generation B&O device.