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| EEVBlog 121GW Multimeter Firmware Details |
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| exe:
I think too he mentioned he has sources. I tried to write my own firmware, but failed due to underestimation of effort and lack of knowledge of stm32. I thought I'd write a basic firmware in a few evenings, but failed even to get LCD working :/. Then I realized that I don't know how to control the main IC, and its datasheet was uncomfortably big.... So, many things it seems need to be implemented from scratch, it's not like an arduino-style development when all it takes is just install libraries and bind them all together in main(). |
| e0ne199:
any info for new firmware?? 2.00 really is full of bugs anyway |
| firewalker:
--- Quote from: exe on June 27, 2019, 08:26:45 am ---I think too he mentioned he has sources. I tried to write my own firmware, but failed due to underestimation of effort and lack of knowledge of stm32. I thought I'd write a basic firmware in a few evenings, but failed even to get LCD working :/. Then I realized that I don't know how to control the main IC, and its datasheet was uncomfortably big.... So, many things it seems need to be implemented from scratch, it's not like an arduino-style development when all it takes is just install libraries and bind them all together in main(). --- End quote --- There is a basic open firmware with "Hello World" example. https://github.com/tpwrules/121gw-template Alexander. |
| daveyk:
"I just bought the 121GW from Welectron here in Europe and it came with firmware 1.61 so the 1.58 is already "old"" I just bought mine (June 2019) directly from Dave, and it is running 1.57 Firmware. I find the resistance mode very sluggish. Maybe new firmwar would fix that? I need to locate firmware and then I guess go buy a micro-sd card. |
| darik:
--- Quote from: daveyk on July 11, 2019, 04:37:50 pm ---"I just bought the 121GW from Welectron here in Europe and it came with firmware 1.61 so the 1.58 is already "old"" I just bought mine (June 2019) directly from Dave, and it is running 1.57 Firmware. I find the resistance mode very sluggish. Maybe new firmwar would fix that? I need to locate firmware and then I guess go buy a micro-sd card. --- End quote --- 2.0 is definitely faster autoranging in resistance mode. To get it, go here and click on "firmware": https://www.eevblog.com/product/121gw/. I thought all the meters came with a micro-SD card. Or was that just the kickstarter? Anyhow, you should probably check and make sure there isn't already one in there. |
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