The discrepancies are around 0.9mm to 1.20mm enough to be off pitch if I get it wrong.Īny assistance in clarifying the correct spacing would be greatly appreciated. In the early days, i forgot to add a filter cap to aref, for example. Arduino328p arduino 328p ftdi arduino uno raw. Arduino uno is based on atmega328p atmel avr family microcontroller (mcu). Arduino development platform detailed features. If anyone can confirm what the distance is between the A0-A5 (6pin) > 5V, 3.3V, GND (8 pin) headers and between the PD0-PD7 (8 pin) > PB0-PB5, GND, AREF, PC4-PC5 (10 pin) header. Download scientific diagram schematic of arduino uno input/output pins and atmega328 pins correspondence. I have looked on the Arduino site to see if I couldn’t find an official header pin header placement with dimensions and have been unable to locate it if it exists? To add to the confusion the spacing on the Arduino R3 module in the KiCad library is different to the physical measure boards I mentioned above. I have an UNO clone here and Sparkfun blank PCB shield which I thought might be helpful whilst laying out the UNO part of this project, unfortunately the two have physically different header placement between the headers? I now don’t know which one to trust? ![]() I am stuck on the physical pin header placement for the UNO. For my grandson I am designing project PCB with a Arduino UNO onboard.
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