Quasar ElectronicsSG05MKT-COB - Classic Ding-Dong Door Chimehttps://www.quasarelectronics.co.uk/media/ecom/prodsm/sg01m.jpgClassic 'Ding-Dong' door chime. Component values in the RC networks can be changed to adjust the tone & duration of the sound...Electronics > Circuit Components > Printed Circuit Boards > Development Boardsquasar_diy_sg5mSG05MKTGBP9.95Quasar Electronics LimitednewConditionInStockhttps://www.quasarelectronics.co.uk/Item/sg05m-classic-ding-dong-door-chime-generator
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Self-Assembly Electronic Kit (Soldering Required) or COB Sound Module Only
This is a classic 'Ding-Dong' door chime sound generator kit with a low standby current.
We supply extra capacitors in the kit so that you can experiment with the 'Ding' and 'Dong' duration's. Oscillator frequency is set at 64kHz by a 510K resistor but you can change this to give the tone of your choice.
The KIT version (Order Code SG05MKT) is supplied with the COB sound module, a motherboard for the supporting components, a 3" (75mm) diameter speaker, push switches, components and battery holder. Switch wire is not included (simple 2-core bell wire is fine).
N.B. This kit requires a reasonable level of soldering skill and it not recommended for beginners.
You can also purchase just the COB sound modules on their own without the additional components supplied in the Kit (SG05COB in Product Options below).
3V dc. 2 x AA battery holder supplied (battery Order Code 656.010)