Search found 1686 matches

by mnfisher
Fri Feb 27, 2026 8:05 am
Forum: General
Topic: SmartScope Offer
Replies: 14
Views: 1264

Re: SmartScope Offer

by mnfisher
Wed Feb 25, 2026 7:21 pm
Forum: User Components
Topic: SN74HC595 Multiplexed 7 seg LED display
Replies: 0
Views: 111

SN74HC595 Multiplexed 7 seg LED display

A simple display (4 digit) using a shift register. A couple of points: 1) Pull the OE (output enable) pin to ground either in code or in hardware. 2) Multiplex needs to be called regularly - ideally use an interrupt - as per demo. However it could be called in a loop (with a delay). Something like 2...
by mnfisher
Wed Feb 25, 2026 4:28 pm
Forum: General
Topic: SmartScope Offer
Replies: 14
Views: 1264

Re: SmartScope Offer

Keyboard shortcuts are my go to option :-)
Though otherwise 'goto' is frowned upon!
by mnfisher
Wed Feb 25, 2026 3:02 pm
Forum: General
Topic: SmartScope Offer
Replies: 14
Views: 1264

Re: SmartScope Offer

Shiny...

Mostly it's intuitive - or becomes so?

I've never managed the signal generator though - one day i might have the need.

It's designed for a touch screen interface - works well on Android - I often run on tablet.

Martin
by mnfisher
Tue Feb 24, 2026 10:23 pm
Forum: Projects - Embedded
Topic: 1x 74HC595/TPIC6B595 via SPI interface, driving multiplexed 4x 7-segment display
Replies: 10
Views: 866

Re: 1x 74HC595/TPIC6B595 via SPI interface, driving multiplexed 4x 7-segment display

A rather busy breadboard !
disp_led.jpg
disp_led.jpg (185.2 KiB) Viewed 196 times
by mnfisher
Tue Feb 24, 2026 10:12 pm
Forum: Projects - Embedded
Topic: 1x 74HC595/TPIC6B595 via SPI interface, driving multiplexed 4x 7-segment display
Replies: 10
Views: 866

Re: 1x 74HC595/TPIC6B595 via SPI interface, driving multiplexed 4x 7-segment display

The 'trace' showing the 'common' pins.
LabNation_Screenshot48.png
LabNation_Screenshot48.png (163.83 KiB) Viewed 202 times
by mnfisher
Tue Feb 24, 2026 10:05 pm
Forum: Projects - Embedded
Topic: 1x 74HC595/TPIC6B595 via SPI interface, driving multiplexed 4x 7-segment display
Replies: 10
Views: 866

Re: 1x 74HC595/TPIC6B595 via SPI interface, driving multiplexed 4x 7-segment display

Pins for CA0 (probably should be CA1 ?) - CA3 etc are in properties. It's all Flowcode - but doesn't attempt to simulate (although you can look at what is being sent to the shift registers and the common pins in multiplex)

Martin
by mnfisher
Tue Feb 24, 2026 10:04 pm
Forum: Projects - Embedded
Topic: 1x 74HC595/TPIC6B595 via SPI interface, driving multiplexed 4x 7-segment display
Replies: 10
Views: 866

Re: 1x 74HC595/TPIC6B595 via SPI interface, driving multiplexed 4x 7-segment display

I had a play with this... This is a first idea - and as Iain says using CS as RCLK seems to work well... I use an interrupt to multiplex the displays - the character set is a rough attempt with QA connected to segment A, QB to seg B etc) I found an interrupt rate of 244Hz worked nicely (each digit r...
by mnfisher
Tue Feb 17, 2026 11:29 am
Forum: General
Topic: ESP32 Firmware Protect
Replies: 3
Views: 553

Re: ESP32 Firmware Protect

I've not encountered any - I'm currently using v5.5 - and so far no problems... There have been issues with installing versions - which, luckily, i seem to have avoided - I've always found running the online installer and then the install.bat (in the framework directory) had been good - but back eve...