New isolator circuit have been built for the I,U,P measuring unit and for other future I2C devices.
It has the standard 2 wire of I2C the 5V DC power supply and one more wire galvanically isolated by two special purpose ICs and an optocoupler.
I have found Adafruit INA219 panel a bit narrow band for my power supply and MIG welder so decided to went for a wider band measurement unit and found INA226 better suite from TI product range.
Continue reading Current, Voltage and power consumption measurement for 0 – 36V and 0 – 4.5A
I have tried to submit an improved Joystick Shield to Sparkfun to see if this design is worth to work with.
The main concept behind this shield is if a DIY minded developer have left without enough IO connections to finalize its gadget then the I2C protocol can help out using as minimum as two wire to do the job for example to a user input device.
Végre elkészült és beindulni látszik ez a kis DIY embereknek készített site.
