4 thoughts on “HV Rescue Shields are back in stock!”
Hi i have made the arduino shield using the previous version. unfortunately it is not working. i tried with a bricked chip, it did not fix the chip; i tried with a good chip only to see if the hvpp is working or not, but the good one’s fuse also remained unaltered. i have checked the connection and seems ok.
few pointers i wanted to mention:
1. I am using a pc atx psu to get the 12vdc.
2. between 12 v and collector of 2n2222 i am using 2.2k instead of 1k resistor.
3. Not using any protection resistors.
Include what specific version of the shield you are using, what version of the Arduino sketch, and include a schematic if you have made any mods to my design.
We could also call this an “I/O lines expander” – if you’re not dependent on ISCP, then you can free up the Reset pin and get that 6th I/O line you always wanted 🙂 (speaking in terms of the smaller chips like Attiny13 that always seem to have one I/O less than you actually need)
Hi i have made the arduino shield using the previous version. unfortunately it is not working. i tried with a bricked chip, it did not fix the chip; i tried with a good chip only to see if the hvpp is working or not, but the good one’s fuse also remained unaltered. i have checked the connection and seems ok.
few pointers i wanted to mention:
1. I am using a pc atx psu to get the 12vdc.
2. between 12 v and collector of 2n2222 i am using 2.2k instead of 1k resistor.
3. Not using any protection resistors.
Please help
Hey there,
Go here for support:
http://mightyohm.com/forum/viewforum.php?f=7
Include what specific version of the shield you are using, what version of the Arduino sketch, and include a schematic if you have made any mods to my design.
Jeff
We could also call this an “I/O lines expander” – if you’re not dependent on ISCP, then you can free up the Reset pin and get that 6th I/O line you always wanted 🙂 (speaking in terms of the smaller chips like Attiny13 that always seem to have one I/O less than you actually need)
ElectroNick – That is an excellent suggestion – on low pincount parts you often need to take advantage of every IO pin you can get.