On the subject of typographical corrections, in the UK (and I suspect most native-English countries), we use "V" rather then "U" for voltage...
I am new here and also a newbie for electronics. I got mine today from ebay. It is with Atmel Mega328p AU chip, it impressed me with all SMD components and even with a Tantalum capacitor!
However, they failed to acknowledge Karl-Heinz K"ubbeler, madires and everyone else who contributed to the firmware design.
The seller claimed it is 2014 "latest" version. However when started the program, it showed:
"Transistor Tester V2.1". Wondering what exactly firmware it is running.
ALso, I am planning to upgrade the firmware anyway to the newest version using the ISP port, I am actually wondering what version of LCD should I use? Thanks!
Karl-Heinz has fixed the diode symbol issue and the fix is out in the repository. Thanks!
http://www.mikrocontroller.net/svnbrowser/transistortester/Software/trunk/
it lasts for around 5 sec. then it displays "Cell!" (see attachments), tried a new battery, no luck
You probably need to adjust the Makefile parameters for the voltage divider built onto your board (+protection diode loss).
You probably need to adjust the Makefile parameters for the voltage divider built onto your board (+protection diode loss).
While the meter still can be turned on/off after flashing the firmware, there is no display. I set the LCD_ST7565_RESISTOR_RATIO = 7, and then i was able to see some faint display. I am wondering what parameters in the makefile should be set to make it working properly?
While the meter still can be turned on/off after flashing the firmware, there is no display. I set the LCD_ST7565_RESISTOR_RATIO = 7, and then i was able to see some faint display. I am wondering what parameters in the makefile should be set to make it working properly?
That value selects the resistor divider of the module's internal voltage regulator. For most ST7565 displays 4 or 7 work fine but you could also try other values from 0 up to 7.
I tried all values and seems only LCD_ST7565_RESISTOR_RATIO = 7 gave me a faint display, with other values, there is no display at all.
Is there anything else i should look at?
Excuse me please, but can someone show me where I can find full schematic (with ability to measure frequency). All I know - the pin 6 of the AtMega is the input
http://www.mikrocontroller.net/svnbrowser/transistortester/Doku/tags/english/
click on link to download the "GNU tarball". You'll need the GNU tools tar and gzip or something like 7-Zip to extract the files. Look at the file ttester_eng110k.pdf.
The documentation mentions disconnecting the leads for a certain test and only connecting a cap after a certain prompt so I don't want to do it wrong.
The main difference between the k and m firmwares is that the k-firmware includes support for ESR measurement and the m-firmware has a simple menu system and a PWM tool.
The documentation mentions disconnecting the leads for a certain test and only connecting a cap after a certain prompt so I don't want to do it wrong.
It's pretty simple. Short circuit the three probe pins/leads and start the calibration (actually adjustment). After a few tests you'll be asked to remove the short circuit and some more tests are run. Then the tester displays the cap symbol and you connect a cap (film cap 220nF - 1µF recommended) to probes #1 and #3. That's the procedure for the k-firmware.
The documentation mentions disconnecting the leads for a certain test and only connecting a cap after a certain prompt so I don't want to do it wrong.
It's pretty simple. Short circuit the three probe pins/leads and start the calibration (actually adjustment). After a few tests you'll be asked to remove the short circuit and some more tests are run. Then the tester displays the cap symbol and you connect a cap (film cap 220nF - 1µF recommended) to probes #1 and #3. That's the procedure for the k-firmware.
The main difference between the k and m firmwares is that the k-firmware includes support for ESR measurement and the m-firmware has a simple menu system and a PWM tool.
Is the above statement still valid?
Hi,
finally spare amtega 328 arrived,where can I find compiled 1.11k firmware ready for flashing?
Tried to find it myself but no luck so far
I'm not sure which firmware I have but the Version 1.11k May 27, 2014 .PDF I found says...
I'm not sure which firmware I have but the Version 1.11k May 27, 2014 .PDF I found says...
That's the long explanation I'm pretty sure that your clone runs the k-firmware.