Comments on: Hacking a cheap LED voltmeter https://ba0sh1.com/2013/07/26/hacking-a-cheap-led-voltmeter/ Electronics, Computers at leisure time Sat, 27 May 2023 21:14:05 +0000 hourly 1 https://wordpress.org/?v=6.1.1 By: carlos feldman https://ba0sh1.com/2013/07/26/hacking-a-cheap-led-voltmeter/#comment-5507 Sat, 27 May 2023 21:14:05 +0000 https://www.ba0sh1.com/?p=720#comment-5507 In reply to ba0sh1.

Actgually STM Did in its AN3281 from 2010 ( poll mode ) and updated it to use interrupts, in 2016, year after your bit bang version, using a very primitive stdlib.
Now (2023) I updated this version for using the ugly 2018 STDLIB with very good results.

]]> By: Rellik232 https://ba0sh1.com/2013/07/26/hacking-a-cheap-led-voltmeter/#comment-92 Sun, 29 Jul 2018 20:43:59 +0000 https://www.ba0sh1.com/?p=720#comment-92 Yo where did you get this device with stm8 chip on?

]]> By: | Voltmeter, Ampermeter for Power Supply – DRAFT https://ba0sh1.com/2013/07/26/hacking-a-cheap-led-voltmeter/#comment-91 Sun, 28 Feb 2016 01:52:59 +0000 https://www.ba0sh1.com/?p=720#comment-91 […] input voltage. The whole time I had in my mind I can just reprogram the microcontroller similarly (1|2) and correct the scaling. So I ordered 1 more. Also asked the seller (alice) to contact the […]

]]> By: Hacking a cheap LED voltmeter | Make, Electronics projects, electronic Circuits, DIY projects, Microcontroller Projects - makeelectronic.com https://ba0sh1.com/2013/07/26/hacking-a-cheap-led-voltmeter/#comment-90 Tue, 27 Aug 2013 04:17:46 +0000 https://www.ba0sh1.com/?p=720#comment-90 […] Hacking a affordable LED voltmeter – recite else about this enterprise specify […]

]]> By: ba0sh1 https://ba0sh1.com/2013/07/26/hacking-a-cheap-led-voltmeter/#comment-89 Sun, 25 Aug 2013 14:42:42 +0000 https://www.ba0sh1.com/?p=720#comment-89 In reply to Sleepwalker3.

Yes that would be ideal, I just do not like flying wires. I actually could use the HW UART on Pin 2/3 to control the LED and implement the SparkFun protocol. But since nobody (as per my Google search) has implemented I2C slave emulation on STM8, I think I can write one just in case is it needed somewhere…

]]> By: rndm(mod) » Turning Cheap Voltmeters into I2C Displays https://ba0sh1.com/2013/07/26/hacking-a-cheap-led-voltmeter/#comment-88 Sun, 25 Aug 2013 13:06:56 +0000 https://www.ba0sh1.com/?p=720#comment-88 […] figured out, it was time for new firmware. Fortunately, [ba0sh1] had already written firmware for a similar purpose which could easily be adapted. The code implements a software I2C slave, which reads data off […]

]]> By: Turning Cheap Voltmeters into I2C Displays https://ba0sh1.com/2013/07/26/hacking-a-cheap-led-voltmeter/#comment-87 Sun, 25 Aug 2013 13:02:19 +0000 https://www.ba0sh1.com/?p=720#comment-87 […] figured out, it was time for new firmware. Fortunately, [ba0sh1] had already written firmware for a similar purpose which could easily be adapted. The code implements a software I2C slave, which reads data off the […]

]]> By: Sleepwalker3 https://ba0sh1.com/2013/07/26/hacking-a-cheap-led-voltmeter/#comment-86 Sun, 25 Aug 2013 12:39:52 +0000 https://www.ba0sh1.com/?p=720#comment-86 Wouldn’t it have been easier to cut the traces from pins 11 and 12 and run links over to the resistors from pins 5 and 6, then just use 11 and 12 for normal HW I2C and pins 5 and 6 could drive the display?

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