Search found 110 matches

by ijabbott
Sat Nov 17, 2018 10:04 am
Forum: Usage tips, tricks and problem reports
Topic: All calculation are equal but complex number are more equal...?
Replies: 11
Views: 216

Re: All calculation are equal but complex number are more equal...?

X^2 will square all the matrix elements, it will not square the matrix. Only (all?) single-argument functions will work on all elements of the matrix. Eg. MOD doesn't work, but SIN, IP, SIGN, XTOA etc. work. Cheers, Werner Also, the +, -, *, / operations between a number and a matrix apply the oper...
by ijabbott
Wed Nov 14, 2018 5:37 pm
Forum: Hardware issues
Topic: buttons that don't register well
Replies: 173
Views: 21580

Re: buttons that don't register well

I just opened up my calculator to try cesar's Post-It note (or supermarket own-brand sticky notes in my case) trick to fix the non-clickyness of the left hand side of the ENTER and it worked great! The ENTER key on my DM42 now feels the same all across its width. I also followed Logan's procedure to...
by ijabbott
Thu Nov 08, 2018 5:44 pm
Forum: DM42
Topic: DM42 : What a beauty !
Replies: 14
Views: 1226

Re: DM42 : What a beauty !

Here is the NumWorks calculator is controlling a modified elegoo rover over a serial port. The calculator is connected to robot with the USB cable, but not using the USB protocol. The data lines of the USB port are remapped to an uart by the firmware. Could be a very useful feature (if it doable) ...
by ijabbott
Wed Nov 07, 2018 10:45 pm
Forum: Discuss!
Topic: HP-42S / Free42 Extension for Visual Studio Code
Replies: 5
Views: 475

Re: HP-42S / Free42 Extension for Visual Studio Code

That looks useful, although I haven't tried it yet. I like the included command help. I wonder how it handles double quotes and comment characters in strings? I don't really like the "Greedy comments" switch that grsbanks used for his online translator, although I understand his reasons for impleme...
by ijabbott
Sun Nov 04, 2018 6:14 pm
Forum: Discuss!
Topic: HP-42S / Free42 Extension for Visual Studio Code
Replies: 5
Views: 475

Re: HP-42S / Free42 Extension for Visual Studio Code

That looks useful, although I haven't tried it yet. I like the included command help. I wonder how it handles double quotes and comment characters in strings? I don't really like the "Greedy comments" switch that grsbanks used for his online translator, although I understand his reasons for implemen...
by ijabbott
Fri Nov 02, 2018 9:41 pm
Forum: Hardware issues
Topic: Keyboard debouncing
Replies: 50
Views: 4014

Re: Keyboard debouncing

So getting back to the topic :) Does anyone think there is anything we can do to fix the keyboard bouncing problem? I am thinking it can be addressed in software and I am trying to figure out if anyone else thinks it is worth working on.... of if I am the only one that is plagued by it :) The softw...
by ijabbott
Thu Oct 25, 2018 4:47 pm
Forum: DM42
Topic: Somehow offtopic...somehow not that much...
Replies: 6
Views: 574

Re: Somehow offtopic...somehow not that much...

keithdalby wrote:
Thu Oct 25, 2018 4:27 pm
ijabbott wrote:
Thu Oct 25, 2018 3:42 pm
I was going to follow up with a picture for "exponential bear" but it's maybe NSFW.
I don't get it
Let's just say it was a picture of two polar bears arranged in a form resembling the exponentiation operation.
by ijabbott
Thu Oct 25, 2018 3:42 pm
Forum: DM42
Topic: Somehow offtopic...somehow not that much...
Replies: 6
Views: 574

Re: Somehow offtopic...somehow not that much...

I was going to follow up with a picture for "exponential bear" but it's maybe NSFW.
by ijabbott
Thu Oct 25, 2018 6:22 am
Forum: DM42
Topic: DM42 : What a beauty !
Replies: 14
Views: 1226

Re: USB OTG ?

According to ST datasheet , devices do support USB OTG: USB OTG 2.0 full-speed, LPM and BCD Am I correct that, in theory, DM42 can act as an USB host? So one can plug e.g. usb-2-uart adapter if needed SW support will be done to DM42 firmware? Perhaps, but it wouldn't be able to supply any power to ...