New modification English k-firmware for GM328A(AY-AT) based on the current 899th revision 1.13K.Quartz 8 or 16 MHz.Font 8x15.
The author's code has been supplemented and corrected in many places to speed up the work and best display the test results:
1. Improved font 8x15, added new symbols of inductance,zener diode,triac,thyristor, "eta" as well as large symbols UJT and PUT.
2. Test results (value data) are highlighted in a separate color.
3. A full pinout for 3 contact parts is always placed at the bottom of the display for convenience when sorting.
4. A new color icon has been added to assess the battery status. If an external power supply(>10V) is used, the display shows the inscription "DCPwr".
5. A small (simple) modification of the circuit allows you to measure the zener diodes at the terminals of the voltmeter "GND" - "V+" up to the voltage of the power supply (9-15V) by holding the Test button for a long time at start. The zener diode symbol will appear on the display if it is connected correctly, and on the 2nd line its breakdown voltage is Vz. If the zener diode is connected as a diode, only the forward voltage drop on it will be displayed on the display Vext.
6. Improved auto-detection of UJT and fixed the display of the transmission coefficient "eta".
7. The tester's algorithm has been changed for cyclic modes [RL] and [C] - now exit from these modes without turning off the tester. Long press of the Test button - exit the cyclic mode and restart the test.
8. Fixed calculation of the capacitance of diodes at a reverse voltage of 5V (negative capacitance values are no longer displayed for germanium diodes).
9. Added calculation and display of base-emitter capacitance (Cbe) for BJT.
10. Added auto-detection of silicon and Schottky/Germanium diodes with the display of the corresponding designations in the 1st line.
11. For a more accurate assessment of the quality of the potentiometers(trimmer), a display of its total resistance between contacts 1-3 has been added, as well as the percentage of resistances R1<=>R2.
12. There are now 8 full active lines in the menu without an unnecessary "Mode-Select" line. The page mode of the menu display is enabled, which increases the speed and convenience when moving through the items.The "Turn off" item is highlighted in a separate color.
13. To save memory space, the ESR in-circuit measurement mode has been removed.A similar mode can be obtained using the cyclic capacitance measurement point on terminals 1-3.
The screenshots below compare the standard firmware and the modified one
I will answer questions about receiving this modified firmware in my personal message!