Peak Hold VU Meter Circuit High Power Strip LED 12V Bulb 220V Lamp

15 channel Vu meter circuit with peak hold or peak hold feature. It can be done with PIC16F1508, PIC16F1509, microcontrollers. I powered the PIC outputs with mosfet and drove strip led. You can use cob led modules or 12v lamps instead of strip led. You can also use 220V lamp with MOC3020-TRIAC module.

I couldn’t find a DIP case for PIC16F1508 in the market, I bought SSOP20 instead, so I drew and printed a DIP adapter PCB, uploaded the software with PICKIT 2. Since there was no socket support, programming was done via ICSP. If there is no PIC16F1508 in the PIC List, copy the “PK2DeviceFile.dat” file given in the article “PICKIT2 Unsupported Microcontrollers PK2DeviceFile.dat” to the folder where the program is installed.

The MOD selection of the circuit is not working, maybe I have broken the port, when I put the jumper, all outputs are active, it is not a feature I will use anyway.

Peak Hold Vu Meter Circuit Diagram (Mosfet)

Peak Hold Vu Meter Circuit Diagram (Triac)

Vu meter PCB drawings

CAUTION If you are thinking of using a 220V Lamp using a Triac module, be very careful. There may be large explosions at high voltages, use a Fused Power Line and protective glasses before operating the circuit.

Source: s-o.webnode.cz/vu-metr/vum15/