myTEKNOVO Listings on eCRATER SUMMARY: *Important Note: The DIY KIT requires soldering/assembly. Overall assembly difficulty level is Easy. If any questions, please ask over eCRATER messages, thanks. [ - PCB Designed 2017 - ] What will I receive? 2 pcs x Complete as pictured LM358 Audio Level Indicator DIY KIT with MIC (VU Meter). [- With Side-Mounted LED PCB design -]. 12 pcs x IC Sockets 8-PIN for easy installation of the LM358 ICs. Description: The LM358 is implemented as an amplifier to the audio input provided by the microphone. Note that the microphone can be replaced and instead use it as line input. Line input example: Audio output from a CD-Player/MP3 Player etc. If the user decides to utilize the audio output from an already amplified audio signal, then the sensitivity of the VU Meter must be set to minimum. The sensitivity can be adjusted by the 470 KOhm variable resistor (please refer to circuit schematic for details). In addition, this KIT is provided with an improved PCB design that has a Side-Mounted LED classic style (please see images for details), thank you. The remainder 5-LM358s (bottom of circuit schematic) are used as voltage comparators to indicate the audio/sound signal level. Video Sample: The following video shows how the fully-assembled KIT reacts to sound coming from a speaker. Video link --- Click Here --- USA Inventory / Stock: All items for sale are in stock at hand and shipped from California. True USA Based Seller. ------- View more LED VU Meters at our eCRATER store: --- Click Here ---. ------- *** If you have any questions, please contact us. *** INTERNATIONAL BUYERS ARE WELCOME SHIPPING AND HANDLING: Depending on the size and weight of the item(s) being sold, your order will be delivered via the following shipping carriers: To verify the shipping carrier being used, please check the "Shipping Information" section at the bottom or top part of this ad. Make sure to also check the processing time of the order. If we have delays on your order we will contact you within 24-48 hrs. We combine shipping charges, please ask us for the correct invoice once you have completed your order. PAYMENT METHODS: PayPal payments. Credit Cards (managed through PayPal only). myTEKNOVO: Visit our listings on eCRATER for more cool items. You can contact us regarding any bulk(by quantity) order that you would like to place. We give discount on bulk orders, please ask us. myTEKNOVO