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Possible to use a variable to point to Serial or LCD or other char devices?
Hi all,   What I'm trying to figure out is how to use a variable to point to different character devices. Here's an example of what I want to do:   static LiquidCrystal...
Monday, 23 December 2019 - 23:18
Question about flash memory as used in an SSD or MCU
I hope this is in the correct forum. If not, mods please move it and my apologies. OK... we know that EEPROM and FLASH memory must be erased prior to writing (that is, bytes or...
Friday, 13 December 2019 - 07:31
SMD crystal package modification question
Hi all, I like to use crystals vs resonators for AVR boards (both Arduino and home made standalone). To replace the resonator on an Arduino board, a 2 smd no-lead package of size...
Tuesday, 22 October 2019 - 14:09
PWM control of a PMDC motor question
Hi all,   I have a Pololu "Baby Orangutan" controller board with a Toshiba TB6612FNG dual H-bridge IC.   The PWM mode of operation of this chip (see truth table) seems...
Thursday, 10 October 2019 - 13:44
ATMega328PB Datasheet error!
Hi all,   There seems to be a glaring error in the ATMega328PB datasheet (see attached image - click for full size):     The area in yellow is the problem....
Monday, 7 October 2019 - 05:37
Problem with fdev_open and certain printf formats
Hi all,   For all of my AVR projects, I set up the standard input, output and error streams using fdev_open() instead of the ridiculous "Java-like or Arduino-like" method of...
Thursday, 3 October 2019 - 07:06
Dual TinyX313 / TinyX5 programmer board wierd!
Hi all,   I was building a little board with a 20 pin ZIF socket on it and intended it to be able to program either ATTinyX313 or ATTinyX5, connected to a (genuine) Atmel...
Saturday, 16 March 2019 - 05:03
AVR and unused pins question
Hi all,   If I use, say, an ATTiny 85 with the internal R/C clock, then pins 2 and 3 (XTAL1 and XTAL2) are available for use as PB3 and PB4.   The datasheet says:...
Wednesday, 5 December 2018 - 17:36
Looking for suggestions: Wireless serial UART
Hi all,   Simple enough (I think).....   What I am looking for is a small, simple module that would run at probably 915 MHz. or 2.4 GHz. and simply have  VCC and...
Sunday, 18 November 2018 - 03:23
How to generate a new storage section (Arduino / AVR-GCC)
Hi all, If I have a hardware device that has, say, battery backed SRAM, is there a way that I can access it using variables rather than addresses? (I have the code for reading and...
Monday, 5 November 2018 - 17:00
Problem with reading eeprom WORD on a Tiny85
Hi all,   I'm using AVR-GCC version 4.9.4 with avr-libc version 2.0.0 and have run into a strange problem with reading a WORD (uint16_t) from eeprom.  Specifically,...
Wednesday, 10 October 2018 - 17:21
Looking for a certain PCI-E Adapter Card
Mods, if this is the wrong forum my apologies and please move it.   Hi all,   I'm looking for a PC card that will plug into a regular motherboard PCI-E 1X slot and...
Tuesday, 21 August 2018 - 14:51

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