Type in the full discussion title or a part of it.
Discussion Title Created date
Doh...
I spent some time debugging yesterday... I use an LM358 as a level converter, and was getting no output from it... not a twitch.   So I changed it. Not a twitch. So I changed...
Saturday, 17 July 2021 - 06:02
Problems with LDO regulator AZ1117lH-TRG3.3
I'm having heavy headaches with the LDO regulator of the title... they work when initially tested (either dead bug or on an otherwise empty PCB) but I've had a better than 50%...
Wednesday, 7 July 2021 - 14:22
AP2204K - how hot is too hot?
https://www.mouser.de/datasheet/...   I'm using one of these in the smallest packet (SOT-23-5) and discovered too late that my display is taking rather more current than...
Wednesday, 12 May 2021 - 05:42
Aaargh debugging!
Slowly pulling out my hair here... in general programming because the processor is an ARM STM32L073.   I have a widget which talks on two serial ports; on one to a PC via a...
Sunday, 4 April 2021 - 19:51
How big is ~uint8_t?
SERIAL_RESPONSE tx_bosch (int fd, uint8_t tx_byte, RESPONSE_TYPE response) { uint8_t rx_byte; < stuff that sends tx_byte and receives rx_byte > retval = ((...
Tuesday, 23 February 2021 - 22:20
Efficient storage of and access to variable length collections of strings
I have a lot of strings in multiple languages (as a basic i18n attempt for an embedded project) and I've been playing with ways to access and store them. They are of two types;...
Thursday, 7 January 2021 - 09:03
I know nothing about bluetooth, so... <SOLVED>
This seems like a good place to ask.   What I want to do is drop an inexpensive module onto a design such that when connected to linux, windows, or mobile phone (the last is...
Wednesday, 2 December 2020 - 22:00
strcmp()
Bounced of another odd one, about which I should have known better: strcmp() where one of the two inputs is null gives, on this 64-bit Linux/GCC C system, a segfault.   It...
Thursday, 5 November 2020 - 10:29
Apropos casting...
Just as an example, and only because it slowed me down for a moment or two...   while ((uint16_t)regs.pc != next_instruction_address) { interpret_and_disassemble(); }...
Saturday, 31 October 2020 - 19:53
[Linux] what's going on here then?
Linux does not have an equivalent to the conio.h getch() and kbhit() which respectively return a single character from the keyboard and return true if a key is waiting; to get...
Friday, 18 September 2020 - 22:09
OLED display and driver package - 128 * 64
I'm out of touch with current display technology - can anyone recommend a 128 * 64 display module, about a couple of inches across? And ideally not costing twenty quid...  ...
Friday, 11 September 2020 - 20:10
Compilation with warning
Here's an odd one. I'm trying to decide whether this is a bug or not, before I take it to the IDE/compiler maker, so no names, no pack drill.   This bloody thing took me all...
Tuesday, 7 April 2020 - 19:02

Pages