VDI-RODERICO

[roderico]

it is clear that you can also use the MCP604 instead of the MCP602 with the led version
https://www.geotech1.com/forums/show...402#post268402

[praktik_1974]

Thank you, I will definitely try to repeat and check how we work with the ST7565 display

[oden]

hello!can someone please gather together all the latest improovements,updates and modifications that works fine?
thank you

[roderico]

hello!can someone please gather together all the latest improovements,updates and modifications that works fine?
thank you

Hello, the latest version is v2.2 with MCP604 opamp, PIC18F25K22 or PIC18F26K22 microcontroller, ST7565/ST7567 (8080 parallel interface 5V), KS0108 (parallel 5V) or SSD1305 (3.3V) display (other combinations are also possible e.g. LCD1602, MCP602, etc.), please see post https://www.geotech1.com/forums/show...366#post287366

[Andre]

Dear Roderico,

Is possible to generate file. hex to work on 16F628A pic?
Thank you!

[roderico]

Hello, PIC16F628A cannot be used for this project because it has no A/D converter, the recommended microcontrollers are PIC18F26K22/PIC18F25K22 for GLCD and/or LCD displays, PIC16F886 for LCD and PIC12F875/PIC12F683 for LED, there is also code for a very old PIC18F252 but not recommended (this pic also needs an external 4MHz oscillator and it is not in production). The advantage of PIC18F26K22 over PIC18F25K22 is that is has more memory and can be reused for another project that needs more than 32K, if not then it is equivalent to PIC18F25K22 that has 32K. The code needs to be updated to support any other microcontroller.

[oden]

(Hello, the latest version is v2.2 with MCP604 opamp, PIC18F25K22 or PIC18F26K22 microcontroller, ST7565/ST7567 (8080 parallel interface 5V), KS0108 (parallel 5V) or SSD1305 (3.3V) display (other combinations are also possible e.g. LCD1602, MCP602, etc.), please see post https://www.geotech1.com/forums/show...366#post287366)

thank you Roderico!

[nikko10]

Good evening! Divorced the board under the SMD and the normal installation of the indicator, check it just in case, I have not tested it yet

[nikko10]

Not set track-1 foot PIC goes to MCL programming connector

[nikko10]

Good day everyone! I soldered the indicator for 6 svd on the PIC16F819 flashing all the firmwares - for Thunderstorm, Tesoro, Whites - the result is the same, but the metal detector sees the target, but from the entire line only one last LED lights up. I also wait for black metal or non-ferrous metal. there is no difference. Why then sculpt this line of LEDs? leave one last one and let it blink like a star on a Christmas tree .... The meaning of this indicator ????I am waiting for the accessories on the indicator 3 of the SVD on the PIC12F683, if it works the same way, then collect it in a heap, paint it and throw it away. Maybe there is some setting to see the indicator "COLOR ONLY"? . Sorry for the funds spent, and most importantly TIME ...In the photo MD Whites

[nikko10]

adjusted the feeindicat.VDI LED SMD.ispr.rar

[roderico]

Hi nikko10, you can see in the glcd or lcd version that for a given target there is a big error in vdi numbers, e.g. depending on the orientation of the coil, if you add many leds and the vdi separation for each led is less than the vdi error then they will be alternating for a single target, two leds should work best but at the vdi boundary between ferrous/non-ferrous (depending on your calibration) you will also have alternating leds, if your vdi error is small you could add more than 2 leds, (3 or 4) but it cannot be better than the glcd version that provides more information

[nikko10]

Hello roderico! Thanks for your reply. There is a ready-made indicator board for 6 LEDs, the brightness of the backlight is adjustable, and probably the sensitivity, judging by the alternating movement of the LEDs. How to calibrate or how else can you programmatically adjust this indicator? Or is it not worth wasting time and throwing away this design? thanks for the help

[roderico]

I don't know about that board but I guess the alternating leds are due to the error in the vdi numbers. The version with pic12f683/675 might be more stable because it has only 3 leds (vdi+/vdi- and saturation) so the leds can only alternate when the target vdi is close to 0 (or the value that was set in the calibration). I think praktik_1974 was giving it a try, the advantage over the glcd version is that is smaller, cheaper and has less components but it cannot be better for target id than the glcd

[nikko10]

Dear roderico, if you don't know how the 6 LED indicator circuit works, tell me who developed this circuit and firmware. Thanks