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Heinz2
Heinz2 3 hours ago
Thanks for the information. I want to use pin 18 and 19 of the atmega. The display uses no jumper. Gruß Heinz
180348 DIY soldering station
Russin Sir Bullar
Russin Sir Bullar 5 hours ago
WHAT IS HAPPENING ?    NO-ONE IS WRITING ANYTHING !  Did anybody besides me buy and assemble the kit ?? I have a problem:   The OLED-display is not working at all and I don't even know if the program is correct.  The tip gets hot though. What about the pre-compiled code ?  How is that uploaded ?  AVRDUDE ?
180348 DIY soldering station
ElektorLabs
ElektorLabs 1 day ago
It may also be possible to rewire the I2C display for SPI use. Some of these displays have jumpers (0R resistors) that allow to do this. Look up the schematic of your display.
180348 DIY soldering station
TonGiesberts
TonGiesberts 1 day ago
No. The circuit you refer to uses two thyristors anti-parallel. Two different gate signals are needed then, each referenced to the kathode the respective thyristor. Our circuit only generates one gate trigger signal. There is a link to a AC Voltage Controller Kit which has a dedicated trigger circuit for this.
SCR gate pulse generator [180611-1]
ElektorLabs
ElektorLabs 1 day ago
Hi Heinz2, we can do software i2c for the atmega, there are also librarys ( https://github.com/felias-fogg/SoftI2CMaster ) that can handle this. Also the GFX library used in the project supports I2C but may requieres some patches. From your comment we can see you like to have pin 19 and 18 for this purpose used. What will be SDA and SCL in your setup, 18 = SDA and 19 = SDC ? We haven't tried ourself the software i2c on the chip but would be interresting to add this. We can't guarentee if it will be ready soon, but if patches are done for the Firmware we trie to add this German: Hallo Heinz2, auf dem Atmega32u4 ist Software I²C möglich, und es gibt schon Bibliotheken die soetwas bereitstellen. Die verwendete GFX bibliothek unterstützt I²C, benötigt aber eventuell ein paar patches. Aus dem Kommentar lässt sich entnehmen das die Pins 18 und 19 für I2C genutzt werden sollen. Wird SDA = 18 und SCL = 19 ? Bisher haben wir selber noch nicht versucht auf der Hardware I²C in Software zu nutzen, es wäre aber interresant es nachzurüsten. Dieses wird nicht schnell Fertig werden, wenn Patches in die Firmware eingepflegt werden versuchen wir die Funktion mit nachzurüsten.  Regards ElektorLabs 
180348 DIY soldering station