--- product_id: 57631657 title: "555 Astable Timer Project PCB Self Build Kit" brand: "rk education" price: "62 zł" currency: PLN in_stock: true reviews_count: 8 category: "Rk Education" url: https://www.desertcart.pl/products/57631657-555-astable-timer-project-pcb-self-build-kit store_origin: PL region: Poland --- # Battery-powered flexibility Transistor drive circuit expansion Dual variable resistors for frequency tuning 555 Astable Timer Project PCB Self Build Kit **Brand:** rk education **Price:** 62 zł **Availability:** ✅ In Stock ## Summary > ⚡ Build smarter, tune faster, power bigger! ## Quick Answers - **What is this?** 555 Astable Timer Project PCB Self Build Kit by rk education - **How much does it cost?** 62 zł with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/57631657-555-astable-timer-project-pcb-self-build-kit) ## Best For - rk education enthusiasts ## Why This Product - Trusted rk education brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Pro-Grade PCB Design:** Double-sided, pre-drilled with clear silkscreen and solder-resist for hassle-free assembly. - • **Educational & Versatile:** Ideal for STEM learners aged 11-16, blending hands-on experience with real-world electronics. - • **Expandable Power Output:** PCB space ready for transistor drive circuit to boost your project’s power capabilities. - • **Precision Frequency Control:** Easily dial in your desired oscillation with two variable resistors for ultimate customization. - • **Digital Documentation Access:** Comprehensive schematics and guides available online to keep your build on track. ## Overview The 555 Astable Timer Project PCB Self Build Kit offers a professional double-sided PCB with dual variable resistors for adjustable frequency, expandable transistor drive circuit space for higher power output, and clear silkscreen labeling for easy assembly. Designed for educational use and hobbyists alike, it provides online documentation and a robust platform to master electronic oscillators. ## Description 555 Astable Timer Project. Main features; Frequency can be varied by the 2 variable resistors, Battery-powered, PCB has space for a transistor drive circuit to allow higher powered outputs to be added, Clear silkscreen text has been used to make construction simpler, Professional double-sided PCB pre-drilled with silkscreen and solder-resist, Blank PCBs are available, Unique training system is available, Suitable for Key Stages 2, 3 & 4 (ages 11 to 16), Documentation and PDF schematic available from www.rkonlinestore.co.uk Review: A good value product - I bought this for a project at good value, simple to assemble but would have been better if the assembly instructions came with it rather than having to search online for them... Review: great product, poor documentation - Product was great, but links provided for the documentation did not work ## Features - 555 Astable Timer Project - Frequency can be varied by the 2 variable resistors - PCB has space for a transistor drive circuit to allow higher powered outputs to be added - No printed materials are supplied - Schematic and documentation available as PDFs from www.rkonlinestore.co.uk ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00KM1I5L8 | | Batteries Required? | No | | Batteries included? | No | | Best Sellers Rank | 78,301 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 157 in Printed Circuit Boards | | Colour | Clear, Green | | Customer Reviews | 3.8 3.8 out of 5 stars (37) | | Date First Available | 27 May 2014 | | Item Package Quantity | 1 | | Item Weight | 10 g | | Manufacturer | Rk Education | | Manufacturer reference | 555 AST KIT | | Package Dimensions | 6.2 x 4.3 x 1.3 cm; 10 g | | Part number | 555 AST KIT | | Style | 555 Astable | ## Images ![555 Astable Timer Project PCB Self Build Kit - Image 1](https://m.media-amazon.com/images/I/71But1e-N5L.jpg) ![555 Astable Timer Project PCB Self Build Kit - Image 2](https://m.media-amazon.com/images/I/81Q8y1FEyJL.jpg) ## Available Options This product comes in different **Style** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ A good value product *by D***) on 28 February 2023* I bought this for a project at good value, simple to assemble but would have been better if the assembly instructions came with it rather than having to search online for them... ### ⭐⭐⭐⭐ great product, poor documentation *by M***N on 23 October 2024* Product was great, but links provided for the documentation did not work ### ⭐ Don’t bother poor quality components dosnt work. *by U***D on 22 September 2025* Don’t bother. Lack of instructions leaves you googling to try and find any help with the product. I ordered the first one and it lit up the red LED and when you press the switch it turns off the red LED turns on the Green one. Great. But then the green one never goes out. The variable resister makes no difference to the times. I built the circuit with following the picture on the item and soldered it as you would usually do. Figuring I got a dud I ordered another one. This time both LEDs stay lit. The trigger dosnt work at all. Same wiring. Don’t waste your money. Looks like the two resistors nearest the trigger switch are dud. Tried to de solder them but one broke and I gave up. Can’t test the caps but the resistors will cause the circuit not to work. ## Frequently Bought Together - Rk Education 555 Astable Timer Project PCB Self Build Kit - Rk Education 555 Monostable Timer Project PCB Self Build Kit --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.pl/products/57631657-555-astable-timer-project-pcb-self-build-kit](https://www.desertcart.pl/products/57631657-555-astable-timer-project-pcb-self-build-kit) --- *Product available on Desertcart Poland* *Store origin: PL* *Last updated: 2026-05-18*