Programming Voltage Question


New Member
Hello. I was wondering if it is safe to program , for example, a 20M2 running at 3.3V
using the axe 027 usb cable which i presume is at 5V ? i have been using level translators
for I/O elsewhere. Do i need to translate the programming voltage down to 3.3v ?



Technical Support
Staff member
You will be okay. The AXE027 has current limiting resistors on its signal lines and the PICAXE download interface provides additional current limiting. PICAXE's can be programmed from +/-12V RS232 so will be fine from the AXE027.


New Member
Great. Thanks for prompt reply. i seem to be continually bouncing back and forth between 3.3v and 5v
when interfacing sensors etc. The nice thing about Picaxe is that they are flexible with their operating voltage.