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Wifi Ultra Firmware V1.0 [2020] |
Website :
https://blog.fh-kaernten.at/retrofusion/wireless-connection-for-commodore-computers/
Released At :
Vintage Computing Carinthia $0C
Credits :
Download :
Look for downloads on external sites:
Pokefinder.org
User Comment
Submitted by alwyz on 19 January 2021
| I have no official document testing my theory, nor do i care to. I use real world experience. Always have, always will. |
User Comment
Submitted by woz on 15 December 2020
| First of all, thanks for your nice firmware. Second: thanks for your feedback. Do you have any proof of your argument - I mean any official document? "I used it and didn't fail" isn't proof, but I'd be really happy as well, if true. Yes, it is a misconception: just it allows 5V on Vin does _not_ imply the I/O pins can handle 5V as well. The NodeMCU modules I know and people use don't have level shifters. And none of the datsheets allow what you say. See page 11 of the HW guide of the ESP8266: "The IO of the ESP8266EX is a 3.3 V logic level. In the case of serial communication with a 5 V CMOS logic system, a level switch circuit needs to be added externally." (https://www.espressif.com/sites/default/files/documentation/esp..). In my opinion the 5V on Vin comes just from the fact that it has a 3.3V Vreg to allow USB supply for the module, so there is this 5V in as well - that's all... The internal USB connection on the NodeMCU modules is also 3.3V. But anyhow, I wanted a smaller module setup, so here I use ESP-12E/F and anyhow need a PCB with 3.3V supply, resistors etc. - so the few cents for the level shifter does not hurt at all cost-wise and also not effort wise when doing reflow. And it properly follows the HW design guidelines of Espressif, the maker of these chips, not just some assumptions in some forums. |
User Comment
Submitted by alwyz on 14 December 2020
| You CAN use 5v on the Vin of a nodemcu esp8266. That's actually what it's designed for. Lot of misconception out there about this. I see people add level shifters all the time. I guess if you wanna waste your time. I've been using my own design with 5v from the user port for 4 years now with zero issues ever. Beefed up C64 power supply, sure, but never an issue. It's true that you can't put 5v on the 3.3v input pin, but if your nodemcu esp8266 has Vin, you can. That's what it's designed for. |
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