The Kitronik 30 Second Record Playback Kit V2.0 is an easy-to-build audio recording and playback kit designed for classroom electronics projects and home STEM/STEAM activities. This updated version increases the recording time to 30 seconds (up from 10 seconds in V1), introduces a smaller PCB, and includes several improvements that make the kit simpler to assemble and more robust for student use. Whether you’re teaching basic circuits, creating interactive models, or adding sound to props, this kit provides a reliable single-button way to record and play back audio.
The kit includes all the components required to complete the build: PCB, resistors, capacitors, status LED, tactile dual-function switch, AA battery holder and PP3 clips, a microphone, and an 8Ω off-board speaker. The PCB also features two sets of external solder pads (battery and speaker), and each of the four corners includes an M3 mounting hole for secure attachment to an enclosure or project base.
V2.0 introduces several improvements over the original kit, including easier assembly, a smaller PCB footprint, a pre-soldered IC and protection diode, a simplified single-button interface, and an extended 30-second recording time.
To record, press and hold the switch, then release it when you have finished. A single press of the same switch will play back the recorded audio through the speaker. Repeat the process to make a new recording.
Downloadable teaching resources, including full build instructions, are available at the foot of this page.
Features:
- Record and play back up to 30 seconds of audio.
- Smaller PCB footprint for easier enclosure design.
- Off-board speaker for flexible mounting and improved sound positioning.
- Single-button operation for simple recording and playback.
- Status LED for clear user feedback.
- Pre-soldered surface-mount IC for easier assembly.
- Pre-soldered reverse-polarity protection diode.
- Lower cost than the V1 kit.
- Full set of classroom documentation available as downloads below.
Contents:
- 1 × 21102 PCB with pre-soldered IC and Protection Diode.
- 1 × PP3 Battery Clip.
- 1 × 3×AA Battery Holder with PP3 Connector.
- 1 × 30cm Length of White Hookup Wire.
- 1 × 100R Resistor.
- 2 × 2K2 Resistor.
- 1 × 33K Resistor.
- 1 × 100K Resistor.
- 1 × 22nF Capacitor.
- 3 × 100nF Capacitors.
- 3 × 10uF Capacitors.
- 1 × Microphone.
- 1 × Red LED.
- 1 × 6mm Tactile Button.
- 1 × 8Ω 66mm Speaker.
Dimensions:
- PCB Length: 60mm.
- PCB Width: 44mm.
- Speaker Dia: 66mm.
- Speaker Depth: 20mm.
- Battery Holder Length: 57.5mm.
- Battery Holder Width: 47mm.
- Battery Holder Depth: 15.25mm.
Video:
Requires:
Resources:
Documents & Downloads
Technical Information
| Attribute | Value |
|---|---|
| Main IC | WT2000P4 |
| Operating Voltages | 3.6v - 5v |
| Nominal Voltage | 4.5v |
| Operating Current | 20mA (Recording), 80mA (Playing) |
| Quiescent Current | 5.8µA |
| Battery Types | Alkaline/Zinc Chloride |
| Required Batteries | 3 x AA |
| Maximum Record Time | 30 seconds |
| Reverse Polarity Protection | Inline Protection Diode |
| Number of Soldering Pads | 36 total solder joints |
| Mounting Holes | 4x M3 (3.3mm), 4mm from board edge |
| PCB Dimensions | 44mm x 60mm |
| Standby Battery Life | >10 Years Standby |
Shipping rates Australia wide and New Zealand
FAQ:
- How do I estimate shipping for my order?
- Add products in the shopping cart and head to the checkout page to estimate the shipping.
Dispatch time
Unless expressly agreed otherwise with you, we will not commence delivery of an order until we have received cleared payment of the purchase price in full.
All orders placed before 11 am AEST (Monday to Friday) will ordinarily be processed on the same day.
We will endeavour to ship the Products by the applicable time indicated on the website, but all times are indicative only. All shipping times are dispatch times only, and actual delivery dates will depend on the shipping method chosen, delivery address and delivery service provider.
Note- Please make a note during purchase if you require any item urgently. However we cannot guarantee that we will be able to comply with any request.
*Go to Australia post delivery time calculation to get various Australia post service in your area please use our shipping postcode Thomastown, 3074 as the "from" address - https://auspost.com.au/parcels-mail/delivery-times.html?ilink=tools-open-deliv-times.
We ship all products throughout mainland Australia, Tasmania and New Zealand - Including Darwin, Melbourne, Sydney, Tasmania, Adelaide, Brisbane, Perth, all metro and regional areas but do not deliver to areas in Australia where the Australia Post delivery network is not available.
Check Express shipping delivery coverage area at - http://auspost.com.au/parcels-mail/delivery-areas.html
Receipt of deliveries
Deliveries to post office boxes are not permitted where delivery is by courier. If delivery is by courier and nobody is available at the delivery address to accept delivery when delivery is attempted then the courier may either:
- leave the relevant parcel at the unattended address (the courier will do so if specified in your delivery requirements); or
- re-attempt delivery at a later time or date, in which case we may charge you an additional re-delivery fee.
Note that if a delivery is left unattended at the shipping address and is subsequently stolen then the theft is your responsibility, not ours.
Payment & Security
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.